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Identifying a Suitable Replacement SMD

Toel

New Member
Joined
Dec 8, 2020
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I have a have a Heltec 10A active balancer that suffered damage (burnt diodes) when I accidentally shorted the leads. I falsely thought that if the unit was in the "Off" position it would be protected from short circuits. Anyhow, out of curiosity and for some soldering practice and I am attempting to fix it. It has a series of SMDs and the only markings on them are a green "20". Could anyone please help me to find a suitable replacement for the two damaged (and now removed) parts? I also need to replace three SS34 diodes but they were easier to identify and find new parts. Thank you in advance
 

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Be fortunately you had them, they did their job and most likely protected the rest of the balancer rather than needing a full replacement. Going to be some fiddly soldering, a small flat chisel with a pair of tweezers with a steady hand and some solder paste probably could work fine.

And that's pretty awesome you were able to get the exact part number from them. You can at least get the specs on what it should be from that, even if you can't source the exact same part in small quantities, you can find a similar ones.
 

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