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Does anyone know of a website or online tool to help identify a transistor-like component by its markings?

For instance, one cracked and from the pieces, I can't be sure what it used to read (partial searches like BM 69D or JJ 807 didn't help, but again, we can't be sure due to the cracks).

So I've been seeking compatible drop-in replacements while soldering out a bunch of other mystery transistors from junked circuit boards, hence I need some lookup tool, not just to ID this one.

I learned to ID whether it's NPN or PNP using a multimeter diode test, but that doesn't help a component which has already exploded, eg. due to an ant having crawled into the wrong spot and created a high-voltage short-out, ruining the GFCI outlet from inside.

BTW should I deeply be concerned with other specs besides matching the PNP/NPN type and case size? Of course I'll test the GFCI offline before re-installing into the trailer's AC wall grid.

Already checked Identify SMD transistor - top marking BC RJ and Identify surface mount transistor

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    \$\begingroup\$ alldatasheet.com/view.jsp?Searchword=BT169D \$\endgroup\$ Commented Sep 10, 2021 at 2:57
  • \$\begingroup\$ As an example for a good answer, other domains have such tools freely available and they are incredibly useful, such as pill-identifying in medicine. Perhaps not common for electronics? \$\endgroup\$ Commented Sep 10, 2021 at 16:09
  • \$\begingroup\$ @Marcos Uh, did you try to click the link in the first comment? That's one of the "free" tools. \$\endgroup\$ Commented Sep 10, 2021 at 16:25
  • \$\begingroup\$ @LongPham It was partially useful, yes. \$\endgroup\$ Commented Sep 10, 2021 at 16:58

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Have you tried putting the part number into a search engine? Searching "BT169" turns up a number of results identifying it as a thyristor, not a transistor; here's a datasheet.

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