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Hi,
Maybe TCM809 from Microchip?
You need to provide more information about the whole circuit. Where is the PCB from, what does it do, what other parts are used?
Also: connections, voltages...
Klaus
Hi,
Maybe TCM809 from Microchip?
You need to provide more information about the whole circuit. Where is the PCB from, what does it do, what other parts are used?
Also: connections, voltages...
Klaus
It isn't a MOSFET because the gate-source voltage would be 24V.
It seems to be a bipolar PNP transistor, maybe a Darlington (depends on how much current the relay needs).
2N2222 is NPN, so it will not work.
Measure the base-emitter forward diode voltage (negative probe to the base) on the transistor from a working unit. If the voltage is more than 1V, it is a Darlington.
The easiest way to measure without desoldering is to measure using the multimeter DC voltage setting on a working unit when the relay is activated.
If you measure using the multimeter diode function when a working board is not powered, other components can disturb the reading.
If not a Darlington, you can try a BC807.