End Of Life Components

Finding Obsolete Parts Made Easier

2011-08-28T17:56:00.000-07:00

Parts that are no longer made by the original manufacturer can be difficult to source. Long life military and aerospace projects tend to be the most difficult sourcing challenges as successful programs last decades and most semiconductor products last less than 12 years. So how do you find known good parts that are not counterfeit?

End of Life Component Specialist

USBid Inc, purchased a company in 2000 called Now!Components, located in London, England. The website is NowComponents and includes millions of part numbers, mostly hard-to-find or obsolete material and many are for military and aerospace products. It offers on-site search capability which is rare these days and registrations is free.

The USBid sales team handles all tranasctions and is available from 10:00 GMT thru 23:00 GMT and the phone number is (00) 1-725-9565. The staff is available to help at any time.

All You Wanted to Know About 64 Bit MicroProcessors

2007-05-08T06:38:00.000-07:00

A few of the top IT firms began manufacturing 64 Bit MicroProcessors during the late 1980s. The first 64 Bit MicroProcessors were introduced in 1992 and they were designed for high-end UNIX servers and workstations. 64 Bit MicroProcessors are also applied in desktop PCs these days. IBM delivered the IBM 7030 Stretch super computer in 1961, which used 64 bit microprocessors.

More About 64 Bit MicroProcessors
A 64 Bit MicroProcessors can store 64 bit numbers in its register. The ability enables the processors to handle a tremendous amount of memory, nearly 18 billion GB of memory. Note that an ordinary home PC can address about 4 GB of memory only. This makes these 64 Bit MicroProcessors extremely powerful and not that necessary for the average home PC user. However, they are indeed an advantage to those who deal with demanding applications such as video encoding, scientific research, searching massive databases etc. It is indeed the best possible processor for those who need to load extensive data into the memory. Such people will notice the many benefits and the advantages of using 64 Bit MicroProcessors to carry out their daily tasks, which seem to have become much easier and finish much faster with better results. This is why they have been used in super computers and applied in database management systems.

64 Bit MicroProcessors Industry
Intel and AMD have introduced 64-bit chips, and the Mac G5 also has a 64-bit processor. These systems are known for their speed and for the quality of their performance. Several other leading manufacturers such as Sony, IBM and Toshiba have begun producing 64 bit microprocessors for being used in their play stations, servers, workstations etc. The uses of the 64 Bit Microprocessor has truly increased manifold! It has become an industry.

M38510
74FCT245TSOCSOP
MAX707CSA6
MOLEXBB82556

EPM7128QC160-15 Has 2500 Usable Gates

2007-04-09T06:57:00.000-07:00

EPM7128QC160-15 is a high performance EEPROM-based programmable logic device from Altera using its second-generation MAX architecture. It can be programmed and erased up to 100 times and reprogrammed for fast and efficient iterations during debug cycles as well during design development.

EPM7128QC160-15 has 128 macrocells, each of which can be individually configured for sequential or combinatorial logic. The logic-array, the product-term select matrix, and the programmable register make up the macrocell. There can be 5 product terms per macrocell because the combinatorial logic is implemented in the logic array.

Protect Your Information

The MAX 7000 technology used in the EPM7128QC160-15 comes with a programmable security bit to protect your information by controlling access to the data that is programmed into the device. By programming this bit, your proprietary information that you’ve implemented into the product cannot be copied or retrieved, creating an incredible amount of design security. The only way to reset this security feature is to reprogram the entire device, basically making your information completely safe in the product. EPM7128QC160-15 makes your information invisible to outsider when the security bit is enabled and makes it disappear if they try to disable the security feature.

Other EEPROM PLDs include
10020EV8-6A Fuse-Programmable Array Logic Device (FPAL) - Security Fuse
22V10CRPQE30 One-Time-Programmable Logic Device
AMPAL16L8A/BRA Fuse-Programmable Array Logic Device (FPAL) - prog OE,Icc 155mA

BYV143-45 – Low Conjunction Voltage

2007-04-09T06:47:00.000-07:00

BYV143-45 is a centered-tapped positive CC Schottky recitifier diode. It comes in a TO220AB plastic package.

A Great Schottky Diode

Schottky Diodes have a higher current density than comparable standard silicon diodes and geranium diodes, meaning that they are much better at preventing transistor saturation. Furthermore, they’re also very useful in clamping applications.

By using a metal-semiconductor junction, the Schottky diode creates a Schottky barrier, which enjoys a lower junction voltage and an almost nonexistent depletion width in the metal. The low junction voltage of a Schottky Diode, like BYV143-45, allows it to operate where a nearly ideal diode is required. By using the low junction voltage, it’s also very useful for protecting circuits when used with normal diodes and transistors.

Various manufacturers used to make BYV143-45, but unfortunately it’s now discontinued, making them somewhat more challenging to purchase. Also, this part is not safe for military use.

Other Schottky Diodes include
08470-60012 Low Barrier Schottky Diode Detecto
115CNQ015ASM 15V 110A Schottky Common Cathode Diode in a D61-8-SM package

A TECHNICAL NOTE ON KS621230A7 – 300 AMPERES / 1200 VOLTS SINGLE DARLINGTON TRANSISTOR MODULE

2007-02-19T06:06:00.000-08:00

KS621230A7, the Single Darlington Transistor Module, is a high power device designed by POWEREX for use in switching applications. The key features of KS621230A7 module refer to isolated mounting, Planar Chips, discrete fast recovery feedback Diode, high gain (hFE) and base emitter speed up Diode. The module consists of one Darlington Transistor with a reverse parallel-connected high-speed diode and a base-to-base emitter speed up diode.

Details Of The Absolute Maximum Ratings Of KS621230A7 (At A Temperature Of 25oc)

The Junction temperature range for KS621230A7 device is from – 40oC to + 150oC, while the storage temperature range is from – 40oC to + 125oC. The Collector Emitter Sustaining Voltage (given VBE as –2V), the Collector Base Voltage and the Collector Emitter Voltage are all 1200 V and the Emitter Base Voltage is 7V. The continuous Collector Current and the Diode Forward Current correspond to a figure of 300 Amp, while the Continuous Base Current and Diode Surge Current ratings are 16 Amp and 3000 Amp, respectively.

The Power Dissipation mark is at 2000 W; the ratings for maximum Mounting Torque M6 terminal Screws (E, C) are 26 in, -lb and 12 in, -lb for maximum Mounting Torque M4 terminal Screws (B, Bx). The typical Modular Weight is 470 grams and V Isolation rating is 2500 V.

The mentioned technical features and ratings qualify KS621230A7 for use in Inverters, DC Motor Control, Switching Power Supplies, AC motor control and various other applications.

CY7C342B-30RI – A 100% USER CONFIGURABLE 128-MACROCELL MAX EPLD.

2007-02-16T13:24:00.000-08:00

CY7C342B-30RI, manufactured by the Cypress Semiconductor Corporation, is a 128-Macrocell MAX EPLD. Which implies that CY7C342B-30RI is an Erasable Programmable Logic Device (EPLD) and uses CMOS EPROM cells to configure logic functions within the device. The key highlight of the CY7C342B is the inherent architecture MAX, which is 100% user configurable and therefore, allows the user to accommodate a host of independent logic functions in the device.

The Structural Details

CY7C342B-30RI comprises of eight logic array blocks (LAB), where each block consists of a macrocell array containing 16 macrocells, an expander product term array containing 32 expanders and an I/O block. In all therefore, there are 256 expander product terms, which are to be used and shared by the macrocells within each lab. The labs are all interconnected with a programmable interconnect array, which is given the task routing all signals throughout the chip. The maximum access time of a CY7C342B-30 is 30ns.

Functional Relevance Of Cy7c342b

CY7C342B-30RI owing to its features like high speed and density can be deployed in various applications. It can be used for replacements of large numbers of 7400 series TTL logic, can be deployed in complex controllers and multifunction chips. The device due to its higher functionality (about 25 times of the 20 pin PLDs) further allows replacement of over 50 TTL devices. By enabling replacements for large amount of logic, the CY7C342B-30RI reduces board space, part count and increases the system reliability and therefore, offers expertise in a compact package.

IC068ABC – Powered To Maximize The Performance Of A Vmebus Interface Controller

2007-02-12T06:31:00.000-08:00

VIC068ABC is a VMEbus interface controller, manufactured by Cypress Semiconductor Corporation. The VIC068ABC performs all VMEbus interface controller functions, along with the various other critical operations. The key performance attribute to a VIC068ABC however is to maximize the performance of a VMEbus interface of a VMEbus master/slave module by working upon the cost and board requirements, and deploying patent on-chip output buffers. It is an interface between the local CPU Bus and the VMEbus. VIC068BC is the result of combined effort of a consortium of board vendors, and therefore, is compatible between boards designed by different vendors.

A Perfect Controller, Arbiter, Master/Slave Function Manager

VIC068ABC beyond doubt matches the qualification criteria required for the mentioned designations. The 58 internal registers providing configuration control, explain the controller capabilities. The arbitration support is extended by the single-level, priority and round robin arbitration functionalities. The VIC068 further supports read, write, posting and block transfers to qualify as the master/slave function manager. It also provides for programmable metastability delay and data acquisition delays.

The VIC068ABC further enables interleaved block transfers over the VMEbus. It acts as the DMA master on local bus and supports local module-based DMA. VIC068 provides interrupt support and has 29 interrupts mapped.

VIC068ABC performs the mentioned functions and many others with precision. It is quite easy to manage and can be easily reset by any of the three resetting conditions viz., Internal Reset, System Reset and Global Reset.

Other parts of interest in this space include:

CY7C960A-ASC

25 MHz MC68040 32-Bit Microprocessor

6300ESB I/O Controller

The Heart of the Digital Analog Converter

2007-02-05T12:16:00.000-08:00

An analog to digital converter (abbreviated A/D, ADC or A to D) is an electronic circuit that converts continuous signals to discrete digital numbers. The reverse operation is performed by a digital to analog converter (DAC) Typically, an ADC is an electronic device that converts an input analog voltage to a digital number. The digital output may be using different coding schemes, such as binary and two's binary. However, some non-electronic or only partially electronic devices, such as rotary encoders can also be considered ADCs.

An example of an analog to digital converter is part number DAC729KH manufactured by Texas Instruments.

DACs are now widely used in COMPACT DISC (q.v.; CD) players, in digital audio- and videotape players, and in digital signal processing audio and video equipment. Most DACs use some form of resistor network. Digital data is applied to the resistors in groups of bits. The resistances vary in definite ratios; the current flow in each one relates directly to the binary value of the bit received.

Sourcing Availability

2007-01-26T11:01:00.000-08:00

Sourcing availability by region is definitely an important item to look at. This will give you an idea of how readily available a part is and how quickly you can get it. This metric is based on purchase and delivery time over a specified amount of time. When choosing a supplier make sure that they can deliver quality product in a timely fashion, even if it is an obsolete part.