I know ppl who replace their furnace controller boards with substitutes from ebay... but reworking problems with your microwave Is gutsy! :-p
On Fri, Nov 26, 2021 at 9:11 PM The MacDougals via TriEmbed < [email protected]> wrote: > My microwave display suddenly went very dim. I opened it up and found a > discolored > > spot on a circuit board feeding the display (see attached image). That > component is > > marked B1238, so I assume it is a 2SB1238, which is obsolete. > > > > > https://www.digikey.com/en/products/base-product/rohm-semiconductor/846/2SB1238/30307 > > Medium power transistor( 80V, 0.7A) 2SB1189 / 2SB1238 Features 1) High > breakdown voltage, BVCEO= 80V, and high current, IC= 0.7A. > > 2) Complements the 2SD1767 / 2SD1859. Absolute maximum ratings (Ta=25C) > Parameter Symbol Limits Collector-base voltage VCBO −80 Collector-emitter > voltage VCEO −80 Emitter-base voltage VEB O −5 Collector current IC −0.7 C. > > > > Anyone want to help me find a replacement? > > I dug through my Dad’s stash of old electronics and found a TIP30B, which > looks like it might work. > > > > > > ---> Paul > > > _______________________________________________ > Triangle, NC Embedded Computing mailing list > > To post message: [email protected] > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: http://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > [email protected]?subject=unsubscribe > > -- Best regards, Mike
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