| Electronics > Repair |
| Help needed identifying SOT23 with 43R symbol |
| (1/1) |
| fripp:
Can anybody shed any light on what this component maybe (Symbol=43R, Package=SOT23). Center pin is grounded. I have tried all the repositories I know of but no matches for 43R only 43 which throws up many options. |
| timeandfrequency:
Hello fripp, Something like a ZR431 (TL431) ? If you can power the board, measure the voltage at pin 2 (Vz) : it should match to ± 2 % with the calculated value (SMD resistors circled in blue; I cannot read the values because of the limited resolution of the provided pictures). The formula can be found in the datasheet (see 'shunt regulator'). |
| fzabkar:
http://markingcodes.com/search/c/43r https://www.google.com/search?q=filetype%3Adoc+OR+filetype%3Apdf+%22absolute+maximum%22+43r+sot23 |
| fripp:
Thanks I think I am on the right track now |
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