![]() ![]() if you understand the circuit, test your legs to select a new part and see how it works. If you don't have a clue, try to get the exact replacement part. To properly answer this question involves understanding the circuit design. The obvious parameters to satisfy are breakdown or max collector voltage, next is beta (hfe), finally for more specialized applications noise, or gain bandwidth. You can see the internal diagram of that particular components, pin out, voltage, replacement, block diagram and the components layout. To help you in these situations, heres a cross-reference of HP integrated circuit part numbers to. In the content you can find out all sort of the components specification. Hewlett-Packard Semiconductor Cross Reference. Just like you can replace a bolt with a stronger bolt, your can replace a transistor with a stronger (better) part 99% of the time. The most popular transistor cross reference replacement guide is the Philip ECG semiconductor master replacement guide. A low voltage low current GP device, and higher voltage GP parts, and very low noise parts for preamp front ends. I still have hundreds of the 3 legged buggers sitting in my back lab. In circuit design there are (were?) many transistor applications where a design engineer used the GP NPN or PNP device that he already has in stock. The rules for substituting is pretty much the same as the rules for initially selecting transistors, while it's a little like replacing nuts and bolts in a car, you want the replacement to be strong enough and fit in the hole. INTRODUCTION A transistor is a small electronic device that can. transistor cross reference guide Sat, 04:16:00 GMT transistor cross reference guide pdf 1. ![]() Plastic TO220AB IC V Device Type h I Resistive Switching f PD ICCont. Enter the Manufacturer Part Number of your Semiconductors into the form below to locate a compatible NTE replacement. Is there a general rule for value deviance (I'm thinking hFE and power dissipation: if higher no problem?) or does it exclusively depend on the circuit the transistor is used in? Motorola Master Selection Guide 5.53 Bipolar Power Transistors Table 1. However, even if I had the schematics, I still wouldn't really know how to find close enough substitutes. ![]() I haven't been able to source a free copy of the schematics yet, so not sure exactly what the transistors do, but I thought I might give it a try anyway. Most of the transistors I'm looking for are designated as "general purpose", used in the (motor) control section of an old CD player (i.e., 2SA933 = 2SA733, 2SA970, BC556 - so probably all fine).īut there are a few I can't find equivalent matches for that look close enough. A quick search on the net gave me these pages. The mobile version now includes a Buy-Now button that connects directly to our e-commerce division New 2022 PC VersionĬlick here to download your free Android versionĬlick here to download your free iPhone versionĭon't forget, you can now order popular components on-line from NTEPartsDirect.I need to replace a few obsolete transistors. Long lead times and no inventory Use Digi-Keys cross reference too to find direct, similar and manufacturer recommended crosses for those hard to find. Search hundreds of thousands of devices such as semiconductors, relays, resistors, switches, potentiometers, trimmers, fuses, RF connectors, disc thermostats, terminal blocks, terminals and connectors, and more! Search results include links to easy-to-read, datasheet PDFs. This new version contains many new NTE devices, including all semiconductors added since the last update. With thousands of new parts added, you are now able to cross references over 700,000 industry part numbers. Search across distributors, manufacturers and parts to compare pricing and view. NTE Electronics has released the latest version of their popular cross reference software program, QUICKCross™. How to choose a replacement for a bipolar transistor TOTAL: 139878 transistors. The most accurate and comprehensive electronic part data at your fingertips. The industry's most comprehensive electronic cross reference software available today! ![]()
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