![]() I also bought the Tower's FET selector as well The internet is great, but I still like to browse through specifications in a book now and then. For GBP12, it's a bargain so I have placed an order. I just took a look on Amazon.the Tower's International Transistor Selector is still available The latest revision seems to be December 2008 and it includes SMT transistors. Some circuits just will not behave without a very close equivalent part. Cross Reference Guide GE to Advance PAd1423CRCRGGEODLI20150513001-UPD 09/19 page 3 of 4 Competitor Name Competitor Part Number Advance Notes Ballast Type Ballast Family GE GEMH39-MCM-120 RMH-39-K-LFS CHECK FOR FIT GE case is 2.99' Philips is 4.4' overall. This is crucial for good equivalent selection. One thing I did learn all those years ago, was to read the schematic and decide how critical the components specifications were to correct operation. ![]() whilst not absolutely theoretically correct, it is worth trying. SMD stuff is too modern for it though so I then have to fall back to internet searches. Back in the day when silicon transistors started taking the place of gemanium, there was a generally accepted rule that doubling the value of the emitter resistor was way to obtain the correct bias conditions, (within limits) In a great number of cases with old radios and amplifiers etc. The internet has changed searching for equivalents but I often find the Towers book faster as I grew up with it and know many favourite equivalent transistors. It lists the transistors specifications and any equivalent (but not all) You can flick through various ranges of transistors and select a suitably specified part. I still have my copy from the 1980's and it still serves me well. In the UK when I worked as a 'Saturday lad' in an electronics shop, I used the 'Towers Transistor selector' book. Substitution of RF power devices needs to be approached with a great deal of caution,& preferably with a Spectrum Analyser on hand. Modern devices as a rule,are better spec'd than older ones,so a common modern type may replace an old special type. In more complex circuits,have a look at what devices other manufacturers use in similar circuits-there may be a common device which will do the job. If it is something simple,like a lamp,LED,or relay driver,you can probably replace it with a more common type without any drama. If you can't find a listed equivalent,one good philosophy is to look at the circuit the device is used in. Not only did they often disagree,but by the time you had tracked from one book to another,the specs on the final one you turned up were many times quite different to the original. Ordering number:EN4724FP213PNP Epitaxial Planar Silicon TransistorMotor Driver ApplicationsFeatures Package Dimensions Composite type with 2 PNP transistors facilitatingunit:mmhigh-density mounting.2097A The FP213 is composed of 2 chips, each being FP213equivalent to the 2SB1397, placed in one package. At one of my earlier jobs,we had semiconductor equivalents book from several sources. 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.Good luck finding anything that will do that!(though it must be out there somewhere) Many times the equivalents shown in the various books are harder to find than the original component. 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. Information is subject to change at any time without notice. TOSHIBA is not responsible for any incorrect or incomplete information. NTE Electronics has released the latest version of their popular cross reference software program, QUICKCross™. Please note that this cross reference is based on TOSHIBAs estimate of compatibility with other manufacturers products, based on other manufacturers published data, at the time the data was collected. The industry's most comprehensive electronic cross reference software available today!
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