Electronic Manufacturer, Part no, Datasheet, Electronics Description. Siemens Semiconductor Group Siemens Semiconductor G TCA, TRANSISTOR. PNP SILICON POWER TRANSISTORS. PNP. 2SA designed for use in low frequency power amplifier applications. FEATURES: * Low Collector-Emitter. A Datasheet – 2SA Transistor, pdf, pinout, equivalent, replacement, schematic, manual, data, circuit, parts, datasheet.

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Discussion in ‘ Solid State ‘ started by david winterOct 2, Log in or Sign up.

All electrolytics replaced of course. So far the amp sounds ok.

A Datasheet – 2SA Transistor –

Wires crossed here somewhere EchoWarsOct 2, But there is no need at all to replace them if they work correctly, you will not get any better performance or more power. Craig, I was sleeping yesterday, you’re completely right, I got it mixed up.


Not necessary, here it is; So indeed they are TO, interesting, I only knew them as TO-3 But do I understand correctly you already replaced the old ones? If so and the amp works fine and the specs of the replacements are similar or better, then I guess you’ll be fine.

A Datasheet, PDF – Alldatasheet

I had one dead channel one transistor was open. The other was ok but I changed all 4 outputs, both trimmers and all electrolytics.

The amp worked well yesterday so I presume the outputs are ok. The heatsink wasn’t hot at all. OverLoadOct 3, That makes a lot more sense than a TO A When I jumped into the thread, I only checked the A EchoWarsOct 3, Ah, yes, that clears the mystery.

Sure enough See how far a typo can go! You must log in or sign up to reply here. Share This Page Tweet.

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