Helicore In Autonomous Vehicles: Precision. Accuracy. Expertise.

Autonomous Vehicles and Maxtena Precision GNSS
Smart Cars, Driverless Cars, and Beyond

The driverless car: a culmination of over a decade of research and development that aims

to disrupt the automotive and transportation industries. While there is a lot of excitement

and buzz about the industry, there is still a lot of research to be done before autonomous

(driverless) vehicles become a standard on the streets.

Autonomous or not, Helicore Antennas

provide reliable, precision performance that

outperforms ceramic elements in every aspect

Helicore for Autonomous Vehicles
As the smart car grows toward its autonomous evolution, we continually find that even

with new connectivity devices and services, GNSS remains the best solution for

automotive systems for absolute positioning and timing.

Within the autonomous vehicle design, absolute positioning and timing is integral and

requires precision to keep automated vehicle systems reliably where they need to be:

safely in the lane, connected, and on the road. Helicore GNSS antennas do it best, and they do it with style.

How Karl Kruse can help
Karl Kruse as a distributor for Maxtena is working with customers in the autonomous vehicle industry to develop

advanced antenna solutions for multiple applications within the autonomous vehicle.

First and foremost, our Helicore line of antennas continues to provide superior location

data and multipath rejection, as it always has.

Helicore Antennas typically perform 70% better than ceramic antennas.

Anti-Spoofing

Maxtena is working with leading autonomous vehicle partners to further develop

anti-spoofing technology. They ensure expert integration with the latest anti-spoofing

receiver technology and are further investigating alternate methods to prevent vehicle hacking or tampering.

PPP Correction
Maxtena is also working with industry leaders to provide multiband antennas capable of

providing high availability and reliable signal for PPP Correction Operations.They are

designing custom multiband antennas for both dual-frequency GNSS error sources as

well as for use with External Error Correction Data other services similar to Inmarsat,

Iridium, OmniStar, Globalstar, etc.

Orientation
In addition to their research into precision accuracy and reliable signals from multiple

services, their engineers are working with their partners to provide solutions for precise data

for vehicle orientation while in motion.

Extreme Phase Center Stability

Helicore antennas lead the industry with their extreme phase center stability. What does

that mean? It means that Maxtena’s antennas are receiver agnostic: they work with any kind of

receiver to produce quality data. Whichever receiver you use, Helicore just works.

The comparative data shows that the Helicore antenna in this vehicle test has minimum

phase center variation. It is much more stable than the currently integrated antenna.

Do you need similar contact us

We Deliver Sound To Everywhere

Professional acoustic components for intelligent applications

We supply and design professional acoustic components for your application. You will receive first-class service,

professional technical advice, a wide and comprehensive range of products that will exceed your expectations.

Contact us today and you will experience the difference. Acoustic components, such as dynamic loudspeakers,

microphones, signal generators, and vibration motors, are used in many industrial fields, e.g.

In the automotive, communications and domestic appliance industries, as well as in many other fields of application.

Rising demands on resilience, sensitivity, sound, quality and reliability (zero-error strategy) as well as miniaturization are current trends.

We offer solutions for every challenge in close collaboration with our excellent partners and certified suppliers.

With our extensive experience in the automotive and non-automotive sectors we would be pleased to assist you.

Sealed Sleeve Bearing Fans

The Orion Fans sealed sleeve series features an L10 life expectancy of more than 50,000 hours at a cost 30-50% lower than comparable ball-bearing fans

Developed for price-sensitive applications without sacrificing the performance of a ball-bearing fan, the Orion Fans sealed sleeve series features an L10 life expectancy of more than 50,000 hours at a cost 30-50% lower than comparable ball-bearing fans. The Orion Fans sealed sleeve series extends fan life close to the expected life of ball-bearing fans with a unique patented sealed sleeve technology that retains lubricant by using metal foils that capture the lubricant as it exits the sleeve bearing and recirculates it back into the fan. Built with a brushless DC, auto-restart polarity-protected motor, many of the sealed sleeve series fans are available with special functions for monitoring fan performance including frequency generator, rotation detector, temperature control, or pulse width modulation. Developed for white goods, telecommunications, networking and datacom enclosures, panels and electronic enclosures, industrial controls, servers and motor drives, this series of DC fans is a strong consideration for price-sensitive applications that require a higher performing cooling solution.

Features

Longer life expectancy than sleeve bearing fans (more than 50,000 hours)
Available in DC frame sizes from 40 mm to 120 mm
Temperature range from -10°C to +70°C
RoHS compliant

SMC Diode Solutions Offers Their SMDAxxC-Series Multi-Line, Bidirectional EoS Protection TVS Arrays

SMDAxxC-Series TVS Arrays


SMC Diode Solutions offers their SMDAxxC-series multi-line, bidirectional EoS protection TVS arrays


SMC Diode Solutions’ SMDA03C through SMDA24C are a series of four-line, bidirectional, EoS protectors packaged in the industry-standard SO-8 outline. The most prevalent voltage types used in
logic level and IC power rail circuitry are available.

 

Features   Applications
  • High reverse surge capability
  • Protection of four lines
  • Bidirectional protection
  • Industry-standard SO-8 outline
  • Pb-free, halogen-free, RoHS/WEEE compliant
 
  • RS-232 and RS-422 data lines
  • User interface, IC voltage rails, and power ports
  • Serial and parallel ports
  • LAN / WAN equipment
  • Microprocessor / microcontroller based equipment

Common Secrets Regarding How To Filter Info On The Web

Top secrets on filtering the data within the online

Picture for the trendy man’s globe is composed of information acquired through his have adventure, by about 10-15%. The main channel of information, a way of communion aided by the society and its occasions are exactly the means of mass conversation, resourceful info monomer. It truly is through the scheme of communication and knowledge that the majority of users of culture submit into the exact behavior, thoughts, hobbies, manner and value stereotypes.

Paul Valery compares the sensation of “helplessness” covering modern day male getting obtain in digital structure to all artistic phenomena, to ensure addresses the person for the Museum. Right here, the generation of innumerable hrs spent by so many masters on drawing and portray, collapses in a several times on your thoughts and thoughts. Below the affect of this load we end up being superficial. Or we make students.

Within a democratic culture you will find there’s sure regularity: economical flows correspond to information flows by path and depth. There is a direct union. By the intensity of cash flows its potential to current the sections of knowledge exercise during the modern society. Consequently, the motion of political functions and people today to electrical power (especially throughout the parliamentary and presidential elections) is accompanied by a growing stream of knowledge around this motion. Because of the intensity of knowledge flows, their articles, the amount of viral videos, you can still see the intentions of individuals and functions.

Premium of information

Contrary to entropy, uncertainty or chaos, guidance must have certainty. Answers coming from the specific resource ought to be systematized, structured and oriented.

2nd good of information is related to its attribute of price, usefulness or uselessness. The value of knowledge can be explained when it contributes for the accomplishment of several objectives of human exercise. The component of novelty of information is very important listed here. The purchasing exercise for the human being which reduces chaotic atmosphere, is predicated just on value and usefulness, novelty of information.

A different valuable good of knowledge is its redundancy. Redundancy belonging to the information in judgments will increase their believability and may make added responsible. In the other hand, abnormal redundancy, which “sinks” the essence for the dilemma, cuts down the worth of information.

There exists a typical criterion for analyzing the existence of order, worth, novelty and redundancy of data. This criterion follows within the concepts of cybernetics. Particulars is anything that could be entered to the process for your function of its administration. If your message won’t meet up with the prerequisite – it’s not at all advice.

How can we find inside of the ocean of knowledge the data that is definitely crucial for the functions from the subject matter of administration? The knowledge industry results in being arranged, if there is a mission, undertaking, idea. They pinpoint the attitude into the range and analysis of information. This union awakens recognition, resulting in the flow of information caught the right messages, specifics, activities.

Hence the data certainly is the result of the conversation of style and design and a spotlight. Put simply, info is: thought – awareness – the true secret word or strategy. The whole lot else is advice noise.

Information investigation methods

Advice can be evaluated by relevance, accuracy (trustworthiness) and significance. Indispensable related information that’s valuable to you, the company, the group, or even the company. The precision within the info is evaluated by the trustworthiness on the supply and also reliability in the content alone. Verification of this dependability is carried out by other sources. Evaluation of your worth and accuracy of information is known as its assessment.

The significance of information are usually judged from two concepts: circulation and synthesis. Circulation stands out as the velocity of information circulation between the intrigued persons to be able to connect with guidance of a a number of program, which facilitates to locate a treatment to your predicament or to look for an answer to the intricate query. Synthesis is often a blend of different pieces of data to recreate the full picture of the operation. So, if the critical information can be used for circulation and synthesis – it can be essential detail.

The process of usage of information commences using the selection of details, examine them, a particular interpretation of building them to the foundation of hypotheses, which can be second hand to generate a coherent representation of the many investigated phenomenon and also union of unique factors. Additionally, an try to validate the speculation through the ways of circulation and synthesis. Here it truly is vital to acquire recourse to the views of various actors from numerous views. This reduces the chance of error.

The evaluation of data can be an really valuable action. The destiny of people, service providers, companies, enterprises, corporations, functions, actions – during the close, the state-depends about the conclusions which are produced on its basis.

The seek out options dependant on the investigation and synthesis of data is completed by two systems: “hypothesis” and “intention”. The tactic of “hypothesis” would be that the speculation is predicated in the available in the market important information, on hand facts. The speculation in this instance might not be just one. Then there’re contradictions among them. In this case it is necessary to stick to your “worst” speculation.

The method of ‘intention’ may be to define the actor whose intentions correspond to your points. Here it can be really important to be familiar with the targets that this particular person pursues so that they can predict his doable steps.

What facts does one need

The theory is related with the motion. So, useful info cannot surface without the need of a relationship when using the motion. There is no complete knowledge, but only important information in relation towards the intentions with the one that is questioning the surface earth so that you can act in this particular society and impact this community. What’s guidance to 1, just sounds to the other.

It will be obvious that the availability of high-quality, practical related information for the perfect time helps make it plausible to make the correct selections. But best ways to obtain high-quality data, if you do not know very well what conclusions you’ll need to make? What facts ought to be collected in view of its likely usefulness for potential decisions? Will Google provde the remedy? Otherwise you should certainly make use of other questions answer services? Right here we need a framework of steps to gather information and facts: goals-needs – details base.

Targets for someone or organization might be strategic, tactical and operational. Every of such intentions concentrates on its own choice of knowledge (strategic, tactical and operational). Each and every form of information has completely different bases for observation.

Information for strategic choices. Strategic goals define the leading, basic possibilities of advancement on the organization. Strategic targets define strategic facts wants. The listing of strategic specifics demands is as finish as feasible. Often times, situations that aren’t directly correlated to the organization’s activities abruptly use a important influence on its destiny.

Dependant upon the expectations for strategic answers, a databases is currently being founded, which presents the main instructions for tracking guidance. This is what a databases for an industrial agency will probably appear like:

Country tendencies (financial advancement, dynamics of commercial production, and many others.);
Technological course of action (raw materials; creation systems; natural environment influencing the company’s pursuits, and many others.);
Actors (up-to-date opponents and knowledge about them; potential competitors and knowledge about them);
Diversification (checking of people areas of activity exactly where the company’s products are second hand).
The Strategic database will also be viewed because of the scope from the group. This scope of action is made up of three areas that grow to be the main sections from the databases:

Immediate sphere of motion of corporations (output, technological innovation, suppliers, buyers, rivals);
Sphere of impact (all factors which could influence the fast sphere of motion);
Industry of desire (regions that the firm is just not but engaged in, but might probably do inside long term, capability competition).
Information for tactical systems. If the strategic objective for a corporation may be to response the dilemma of just where to go, the tactical plan could be to remedy the problem of tips to go. The tactical intention also implies tactical data expectations. Dependant upon this, the tactical databases are crafted. They may be of two variations.

Tactical databases in the first of all type (“on request”). The basic directions (sections) within the database for instance, industrial companies could be the adhering to:

The start of a new service demands an answer on the requests: what merchandise are now competing inside of the market, what opponents are working on, who will near the revenue channels, whether or not the laws favors new goods (if not, no matter if it happens to be workable to produce modifications);
Increase in production capability: what is going to be the need for products, if it is necessary to improve production capability, what is going to be the costs, how competition will behave;
Institution of output abroad: political critical information (stability within the regime, volume of corruption, and so on.), social and cultural information (premium of workers, trade Union action, and many others.), financial material (expense of land and building, tax platform, etc.);
Tracking of data on aspects which can influence the exercise of your organisation. First of all, it fears information regarding rivals. Then details about the kinds of existing and foreseeable future products, manufacturing potential and know-how, patent and licensing actions, zones and territories of competitiveness is important.

ALLIANCE MEMORY EXPANDS AUTOMOTIVE GRADE DRAM PORTFOLIO

ALLIANCE MEMORY EXPANDS AUTOMOTIVE GRADE DRAM PORTFOLIO

Alliance Memory announced that its synchronous DRAM (SDRAM) portfolio now features a wide variety of components that provide an automotive temperature range of -40° to +105 °C and are fabricated and assembled to automotive quality standards.

Alliance Memory offers a complete lineup of high-speed CMOS SDRAMs, including double data rate (DDR), DDR2, and DDR3 devices. The company’s portfolio of SDRAMs in the automotive temperature range includes components with densities of 64 Mb, 128 Mb, and 256 Mb. Automotive DDR1 SDRAMs feature densities of 128 Mb, 256 Mb, and 512 Mb, while DDR2 devices are available in densities of 256 Mb, 512 Mb, and 1 G. Alliance Memory’s 1-Gb, 2-Gb, and 4-Gb automotive DDR3 SDRAMs operate over 1.35-V and 1.5-V power supplies.

“Automotive customers need to be able to count on both the quality and the longevity of the memory components they design into key systems, which often need to be readily available years after the original design-in phase,” said David Bagby, president and CEO at Alliance Memory. “Our commitment to the automotive market includes contracting with ISO/TS 16949 certified fab and assembly facilities around the world, as well as ensuring that the key AEC-Q101-qualified components customers need will be available to them far into the future.”

Selected automotive 40°C~105°C temperature DRAM products available from Alliance Memory:

Part number Configuration Clock rate
DDR3 AS4C256M16D3A-12BAN
AS4C256M16D3LA-12BAN
4G
DDR3 AS4C512M8D3A-12BAN
AS4C512M8D3LA-12BAN
4G
DDR3 AS4C128M16D3A-12BAN
AS4C128M16D3LA-12BAN
2G
DDR3 AS4C256M8D3A-12BAN
AS4C256M8D3LA-12BAN
2G
DDR3 AS4C128M8D3A-12BAN
AS4C128M8D3LA-12BAN
1G
DDR3 AS4C64M16D3A-12BAN
AS4C64M16D3LA-12BAN
1G
DDR2 AS4C64M16D2-25BAN 1G
DDR2 AS4C32M16D2A-25BAN
AS4C64M8D2-25BAN
512M
DDR1 AS4C4M16D1A-5TAN 64M
SDRAM AS4C4M16SA-6TAN
AS4C4M16SA-6BAN
64M
SDRAM AS4C8M16SA-6TAN
AS4C8M16SA-6BAN
128M
SDRAM AS4C16M16SA-6TAN
AS4C16M16SA-6BAN
256M

Orion Fans Cross References To NMB Product Discontinuations

56 New Fans & Blowers to Solve EOL Events

Orion Fans has expanded its DC fan and blower product listing to offer a viable, long-term source for customers when they face End-of-Life or product discontinuation notices. Orion Fans has introduced 52 new DC fans and 4 new DC blowers. The additions to the DC fan and blower families include a wide range of package size, speed (RPM), airflow (CFM), and special function combinations. For a stable source of supply, find the Orion Fans cross below.

NMB Part # Orion Fans Pt#   (mm) Voltage  
1004KL-01W-B40-B00 OD2510-05LB 25 x 25 x 10 5
1004KL-01W-B50-B00 OD2510-05MB 25 x 25 x 10 5
1004KL-04W-B30-B00 OD2510-12LLB 25 x 25 x 10 12
1004KL-04W-B40-B00 OD2510-12LB 25 x 25 x 10 12
1004KL-04W-B50-B00 OD2510-12MB 25 x 25 x 10 12
1004KL-04W-B59-B00 OD2510-12MB02A 25 x 25 x 10 12
1204KL-01W-B50-B00 OD3010-05MB 30 x 30 x 10 5
1204KL-01W-B59-B00 OD3010-05MB02A 30 x 30 x 10 5
1204KL-04W-B50-B00 OD3010-12MB 30 x 30 x 10 12
1204KL-04W-B59-B00 OD3010-12MB02A 30 x 30 x 10 12
1404KL-01W-B30-B00 OD3510-05LLB 35 x 35 x 10 5
1404KL-01W-B50-B00 OD3510-05MB 35 x 35 x 10 5
1404KL-01W-B59-B50 OD3510-05MB01A 35 x 35 x 10 5
1404KL-04W-B30-B00 OD3510-12LLB 35 x 35 x 10 12
1404KL-04W-B50-B00 OD3510-12MB 35 x 35 x 10 12
1404KL-04W-B59-B00 OD3510-12MB02A 35 x 35 x 10 12
1606KL-01W-B30-L00 OD4015-05LB 40 x 40 x 15 5
1606KL-01W-B50-L00 OD4015-05HB 40 x 40 x 15 5
1606KL-01W-B59-L00 OD4015-05HB02A 40 x 40 x 15 5
1606KL-04W-B30-L00 OD4015-12LB 40 x 40 x 15 12
1606KL-04W-B40-L00 OD4015-12MB 40 x 40 x 15 12
1606KL-04W-B50-L00 OD4015-12HB 40 x 40 x 15 12
1606KL-04W-B59-L00 OD4015-12HB02A 40 x 40 x 15 12
1606KL-05W-B30-L00 OD4015-24LB 40 x 40 x 15 24
1606KL-05W-B50-L00 OD4015-24HB 40 x 40 x 15 24
1606KL-05W-B59-L00 OD4015-24LB02A 40 x 40 x 15 24
2004KL-01W-B40-B00 OD5010-05LB 50 x 50 x 10 5
2004KL-01W-B50-B00 OD5010-05MB 50 x 50 x 10 5
2004KL-01W-B59-B00 OD5010-05MB02A 50 x 50 x 10 5
2004KL-04W-B30-B00 OD5010-12LB 50 x 50 x 10 12
2004KL-04W-B50-B00 OD5010-12MB 50 x 50 x 10 12
2004KL-04W-B59-B00 OD5010-12MB02A 50 x 50 x 10 12
2106KL-04W-B50-L00 OD5015-12HB 50 x 50 x 15 12
2106KL-04W-B59-L00 OD5015-12HB02A 50 x 50 x 15 12
2404KL-04W-B50-B00 OD6010-12HB 60 x 60 x 10 12
3106KL-04W-B30-B02 OD8015-12MB 80 x 80 x 15 12
3106KL-04W-B39-B00 OD8015-12MB02A 80 x 80 x 15 12
3106KL-04W-B40-B00 OD8015-12HB 80 x 80 x 15 12
3106KL-04W-B50-B01 OD8015-12HB 80 x 80 x 15 12
3106KL-04W-B59-B00 OD8015-12HB02A 80 x 80 x 15 12
3106KL-04W-B59-B50 OD8015-12HB01A 80 x 80 x 15 12
3106KL-05W-B30-B00 OD8015-24MB 80 x 80 x 15 24
3106KL-05W-B50-B00 OD8015-24HB 80 x 80 x 15 24
3106KL-05W-B59-B00 OD8015-24HB02A 80 x 80 x 15 24
3112KL-04W-B40-E00 OD8032-12MB 80 x 80 x 32 12
3112KL-04W-B50-E00 OD8032-12HB 80 x 80 x 32 12
3112KL-04W-B69-E00 OD8032-12HHBO2A 80 x 80 x 32 12
3112KL-05W-B30-E00 OD8032-24LB 80 x 80 x 32 24
3112KL-05W-B40-E00 OD8032-24MB 80 x 80 x 32 24
3112KL-05W-B50-E00 OD8032-24HB 80 x 80 x 32 24
3112KL-05W-B60-E00 OD8032-24HHB 80 x 80 x 32 24
3112KL-05W-B69-E00 OD8032-24HHB02A 80 x 80 x 32 24
3615KL-04W-B40-E00 OD9238-12MB 92 x 92 x 38 12
3615KL-05W-B50-E00 OD9238-24HB 92 x 92 x 38 24
3615KL-05W-B59-P00 OD9238-24HB02A 92 x 92 x 38 24
4712KL-04W-B50-P00 OD1232-12HB 120 x 120 x 32 12
4712KL-05W-B30-P00 OD1232-24LB 120 x 120 x 32 24
4712KL-05W-B49-P00 OD1232-24MB02A 120 x 120 x 32 24
4712KL-07W-B30-P00 OD1232-48LB 120 x 120 x 32 48
4712KL-07W-B49-P00 OD1232-48MB02A 120 x 120 x 32 48
BM5115-04W-B30-L00 ODB5115-12LB 51 x 15 12
BM5115-004W-B40-L00 ODB5115-12MB 51 x 15 12
BM5115-04W-B50-L00 ODB5115-12HB 51 x 15 12
BM6015-04W-B59-L00 ODB6015-12HHB02A 60 x 15 12

Additional Orion Fans Cross Reference Charts

Power Line Chokes Axial From Central Technologies

CTH8HCF Series From 3.9μH to 150,000μH

Description: Axial leaded power line inductor (UL sleeved).

Applications: Used in switching regulators, power amplifiers,

power supplies, SCR and TRIAC controls, speaker crossover

networks and filters.

Operating Temperature: -55°C to +125°C

Isat: DC current that will cause inductance to drop by 5%.

Irms: Based on the inductance change within 10% of initial value

and temperature rise of initial value less than 30°C within coil body.

Inductance Tolerance: ±10%

Testing: Inductance is tested on an HP4284A at 1KHz.

Packaging: Tape & reel.

Marking: Parts are marked with inductance code.

Miscellaneous: RoHS Compliant.

Additional Information: Additional electrical & physical

information available upon request.

Samples available.

Automotive Fuses Advancements

Introduction

Automotive electronics engineers need to meet stringent automotive reliability standards for high-stress applications such as engine controls and battery-management systems. Automotive surface-mount fuses, located under the dashboard in a fuse box, are the go-to choice fault protection. Of these fuses, two types are most commonly used: solid body (chip) fuses or wire-in-air fuses.

However, not only are surface-mount fuses different, those that are commonly used can have major drawbacks. For instance, the non-uniform performance of printed-circuit style ceramic fuses can lead to internal connection failure caused by mechanical/thermal stress (vibration or bending), or by common soldering defects (cold joints or poor wetting). This type of failure can lead to damage to the circuit board and surrounding components.

This article describes the trends in automotive electronics driving the need for more reliable surface-mount fuses, and explains why using conventional fuses to protect automotive applications can fall short. For a solution, it presents advancements in ceramic and wire-in-air surface-mount fuses designed to specifically address the AEC-Q200 automotive standard. It also shows results from simulation tests that illustrate the significant advantages of using advanced technology over the traditional approaches.

Evolution in Surface-Mount Fuse Technology

As cars get “smart” and “connected,” more and more embedded and distributed electronics require pc-board-mounted circuit protection. And with the rapid emergence of electric (EV) and hybrid electric (HEV) vehicles – most with high energy lithium battery systems – the demand for reliable circuit protection devices to protect against catastrophic failures is critical.

While most automobiles (and commercial vehicles, for that matter) provide passengers with a comfortable environment, automotive applications for electronics are subjected to among the harshest of environments – wide temperature variations, shock and vibration, exposure to humidity, water and salt. These applications have placed emphasis on the need for improving surface-mount fuse technology. Fortunately, advancements in both chip and wire-in-air fuse technology is offering dramatically better reliability results over traditional solutions.

Chip Fuses

Traditional Approach: Printed-Circuit Style Chip Fuse

The structure of a conventional printed-circuit style of solid body fuse has a single-layer fuse element. The photomicrograph in Figure 1 shows how the printed-circuit structure is mainly composed of the epoxy substrate and glass. The fuse element is bonded to the surface of the pc board and coated with a protective polymer.

Figure 2 shows the result of a printed-circuit style chip fuse that was placed under high-current overload test conditions. As can happen with this type of chip fuse, the fuse element vaporized, causing prolonged arcing that led to surface melting, cracking and compromised mechanical integrity.

New Approach: Multi-layer Ceramic Chip Fuse

The other most common type of chip fuse is the multi-layer ceramic fuse. Figure 3 shows how the ceramic fuse’s co-fired monolithic structure has two layers of fusible material embedded in the structure.

The ceramic type of fuse offers several distinct advantages for automotive-grade applications since its monolithic structure it is capable of higher current ratings in a smaller package, plus it has a wider operating temperature and can maintain stable operating characteristics in extreme conditions.

A new advancement in ceramic fuse technology is the SolidMatrix ceramic fuse (Figure 4). This solid-body ceramic fuse utilizes a proprietary, solderless end cap construction and provides excellent mechanical and thermal stability over a wide temperature range (-55°C to +150°C).
An important comparison between the two types of chip fuses is how they react mechanically to a fault condition. Where the printed-circuit style fuse can experience arcing and damage during exposure to fault conditions, the multi-layer structure ceramic fuses are able to sustain their integrity.

For example, Figure 5 shows a SolidMatrix ceramic fuse after it was subjected to the same high-current stress conditions as the printed-circuit style fuse described in Figure 2. Unlike the damage sustained by the printed-circuit fuse’s single-layer fuse element, the SolidMatrix’s multi-layered fuse element is diffused into the ceramic body and the device’s appearance shows no external damage

Wire-in-Air Fuses

Traditional Approach: Square Ceramic Tube Fuse

The conventional wire-in-air fuse is known as the square ceramic tube fuse, or square nano fuse. The image Figure 6 shows the common construction for this type of fuse wherein the fusible wire element is housed inside a ceramic tube and connected to the endcaps with solder beads.
There are several disadvantages associated with this conventional wire-in-air fuse. Endcap detachment is a common failure mode in its construction. Also, there is a lack of uniformity in performance due to the variability in the placement of the wire element inside the ceramic tube.

In a worse-case scenario, high-current/heat causes the solder to vaporize, pressure builds up and the fuse erupts/opens. Once this occurs, the temperature goes down, the solder condenses and is redeposited across the circuit where it presents a potential short-circuit condition.

Figure 7 shows two conventional wire-in-air fuses subjected to an EV short circuit condition. Sample A at 250V/250A (left image) and Sample B at 450V/450A exhibited significant damage to the fuse and collateral damage to the surrounding circuitry. In the waveforms, the current flow (yellow trace) through the fuses each display secondary current flow that ultimately resulted in pc board damage.

New Approach: AirMatrix Fuse

A new performance wire-in-air fuse, the AirMatrix, uses a proprietary, hermetically-sealed wire-in-air structure that assures consistent electrical performance (Figure 8).
The fuse element in the AirMatrix fuse is uniformly straight across the cavity and externally bonded to the endcap (Figure 9). Unlike the conventional square nano type fuse, with its ceramic body and solder connect design, the AirMatrix fuse uses a fiberglass-enforced body and solderless direct connect construction.
When subjected to the same EV battery short circuit as the square nano tube fuses described earlier in Figure 7, the AirMatrix fuse’s advanced construction withstood 450V/450A conditions without experiencing any external damage (Figure 10). Note how in the waveforms, the current flow (yellow trace) through the AirMatrix fuse drops to zero. The voltage (green trace) shows an open circuit for the AirMatrix fuse with no secondary conduction.

Summary

Automotive electronics engineers need to look past traditional chip and wire-and-air fuse solutions when setting out to qualify their devices for the AEC-Q200 standard. As shown in by testing results covered in this article, advancements in ceramic and wire-in-air fuses offer significant advantages over conventional approaches. Representing a new approach with significant advantages, the SolidMatrix multi-layer ceramic chip fuse and the AirMatrix wire-in-air fuse are designed in a TS16949-certified facility and are specifically designed for reliable operation in high-stress automotive applications.

For samples or questions , send is an email to info@kruse.de or visit our shop.

Pin-For-Pin Replacements For Discontinued Micron Technology Devices Will Be Available For At Least Five Years

New Alliance Memory 512Mb SDRAMs in 54-Pin TSOP II Package Provide Pin-for-Pin Replacements for Discontinued Micron Technology Devices

Alliance Memory introduced two new 512Mb synchronous DRAMs (SDRAM) in the 54-pin TSOP II package. The AS4C32M16SB-7TCN and AS4C32M16SB-7TIN are available in commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges. The devices provide pin-for-pin replacements for Micron Technology’s discontinued 32M x 16 MT48LC32M16A2P-75:C (AS4C32M16SM-7TCN) and MT48LC32M16A2P-75 IT:C (AS4C32M16SM-7TIN) SDRAMs. Alliance Memory bought the remaining stock of these Micron Technology 512Mb SDRAMs in 2014.

“We are committed to making the transition to Alliance parts as easy as possible for Micron customers, with no gap in product availability,” said David Bagby, president and CEO of Alliance Memory. “We will continue to sell these SDRAMs with their Micron part numbers while stock lasts, and the Alliance-branded AS4C32M16SM-7TCN and AS4C32M16SM-7TIN will be available while supplies last. The AS4C32M16SB-7TCN and AS4C32M16SB-7TIN (“B die”) will be available for at least five years. The devices released today will provide a long-term solution, offering customers pin-for-pin-compatible replacements at a lower cost.”

The AS4C32M16SB-7TCN and AS4C32M16SB-7TIN are optimized for medical, industrial, point-of-sale, automotive, and telecom applications requiring high memory bandwidth. The devices operate from a single +3.3V (±0.3V) power supply, offer fast clock rates up to 143MHz, and are lead (Pb)- and halogen-free.

The SDRAMs provide programmable read or write burst lengths of 1, 2, 4, 8, or full page, with a burst termination option. An auto pre-charge function provides a self-timed row pre-charge initiated at the end of the burst sequence. Easy-to-use refresh functions include auto- or self-refresh, while a programmable mode register allows the system to choose the most suitable modes to maximize performance.

Device Specification Table

Part number Pin-for-pin compatibility Clock rate (MHz) Temp. range
(°C)
AS4C32M16SB-7TCN MT48LC32M16A2P-75:C
(AS4C32M16SM-7TCN)
143 MHz 0 to 70
AS4C32M16SB-7TIN MT48LC32M16A2P-75 IT:C
(AS4C32M16SM-7TIN)
143 MHz -40 to 85

Samples and production quantities of the AS4C32M16SB-7TCN and AS4C32M16SB-7TIN are available now, pls contact us or send us and email to info@kruse.de