Need 2SD2422 solenoid driver transistor for Mitsubishi ECU

Mar 12, 2008 1 Replies
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I need a 2SD2422 solenoid driver transistor for a Mitsubishi ECU. I can't find any information on this part. The package is an insulated SOT-186

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), and the part appears to have a damper diode between C and E. A good transistor measures 0.6V between B-E and B-C on a diode test, so I'm certain that it is not a Darlington, and there appears to be no B-E resistor. FWIW, its base is driven directly by an M1924FP Mitsubishi IC.


- Franc Zabkar


Please remove one 'i' from my address when replying by email.
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On Wed, 12 Mar 2008 14:32:42 +1100, Franc Zabkar put finger to keyboard and composed:

DatasheetArchive.com suggests the 2SD1415A

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as a replacement. It is a Darlington with 5K and 150R emitter resistors, so it probably would measure around 0.6V or 0.7V on a diode test. Maybe I was wrong about the 2SD2422 not being a Darlington. At any rate the 2SD1415A has an integral diode so I think I'll give it a go.

Other sources are suggesting that the M1924FP is probably an M51924FP quad comparator

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). The two parts have the same power and ground pins, and both have outputs on pins 14 and 13. The max current output of the M51294FP is 20mA.

- Franc Zabkar

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