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Identifying //c Internal PSU Component

Posted by: agg24 on 2020-04-19 21:10:53 When I originally stripped my //c down for cleaning, I inadvertently messed up the 3 pin component mounting brackets in the Astec internal PSU. I found them very confusing and ended up spinning the screws a lot. Today, after trying the system again, I found it appeared to receive no power at all. Some investigation (and messing with those stupid brackets) later, I discovered that one of those 3 pin components was lose, having broken one of its legs. One bad desoldering and resoldering job later, and the component appears to have thermal damage. Does anyone know how best to identify this component and what it does? It is at the computer front-side of the board (away from the internal PSU pins). Searching the characters listed doesn't seem to come up with anything, so I'm not sure if this is a MOSFET, transistor, or even 3 pin diode (though I highly doubt the latter).

Posted by: bibilit on 2020-04-20 05:45:37 https://www.onsemi.com/pub/Collateral/BUV26-D.PDF Pretty easy to find online though. Transistor.

Posted by: agg24 on 2020-04-20 06:24:16 Wow. How did you find it so easily?

Posted by: cheesestraws on 2020-04-21 02:25:51 Randomly googling the identifiers on the side of the component will get you quite a long way, in general 🙂 .  In this case, it says BUV-26 on it, and if you google that you get the datasheet for the component.  I assume that's what @bibilit did - it's what I do 🙂

Posted by: bibilit on 2020-04-21 03:11:56 Yes, correct.

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