Talk:SKA6516

Excellent stuff, Peter!

I'll get more service manuals OCR'd and will try to automate extracting of the parts lists to help populate these pages for cross referencing.

Currently in the Caribbean, I'll get back to it in a few weeks. Qfissler (talk) 13:55, 29 July 2023 (PDT)

Confusing statement about failure mode

I honestly have trouble understanding the description of the failure mode of this transistor saying "and when tested will show a reverse polarity protection diode". What kind of test will reveal what exactly? When testing a BJT with a multimeter in diode mode you will find the BE and BC diodes - I dont see how another diode could be found here? Is one of these measurement shorted in problematic transistors? maybe the description could be clarified by the original author. Gregor (talk) 10:14, 15 September 2023 (PDT)

To answer that, if you use one of those cheap multi component tester devices you find on ebay, and test the bad transistor, you will see on the screen a BJT with a diode that can its anode connected to the emitter and the cathode to the collector. Benjamin (talk) 11:24, 4 October 2023 (PDT)

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That doesn't mean such a diode is there. It is very likely an artefact of the tester's limitations. See the thread at https://groups.io/g/TekScopes/topic/101335545#201002

Quoting Tom Lee,

Ed Breya's and my recommendation is quite reasonable: Ignore the overly crude "replace on sight" rule and also ignore the component tester's results. [...]

If you want to perform a basic test, just use an ordinary cheap-o DMM's diode test on the transistor's junctions. [...]

If you find that you do have a legitimately dead -0367, I'd add the 2N2857 to Ed's recommendation of the 2N5179 so that you have other options.

--Peter (talk) 04:19, 6 October 2023 (PDT)

There's a new video from Zenwizard, too: Tektronix 475A Trigger Transistor Testing 151 0367 00 which he's added to the 475 page. Qfissler (talk) 14:18, 26 October 2023 (PDT)