WST03P06
WINSOK
Needs validationmedium risk
WST03P06 is a cautious SI2309 alternative with same package and stronger current rating.
Best Alternatives to SI2309
SI2309 is a P-channel -60V SOT-23-3L MOSFET. Only same-polarity parts with adequate voltage margin should be considered.
AI replacement insight
Electrical riskmedium
WST03P06 matches -60V but lacks 10% margin.
Package riskmedium
Package matches, pin functions missing.
Firmware risklow
Discrete MOSFET, no firmware.
Sourcing risklow
Closest candidate is catalog indexed.
Can it be replaced directly?
No verified pin-compatible replacement is proven from the provided fields.
Best replacement path
WST03P06 is the closest catalog candidate, pending pinout and derating review.
Main risk
Pinout evidence and voltage margin are not confirmed.
Recommended alternatives
1Alternative comparison matrix
| Feature / factor | SI2309 | WST03P06 | Alt 2 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-3L | SOT-23-3L | SOT-23-3L — same package | ||
| Pinout | 3-pin MOSFET | 3-pin MOSFET | 3-pin MOSFET — pin functions not shown | ||
| Voltage | -60V | -60V | -60V — no 10% margin | ||
| Current | -2A | -3.5A | -3.5A — higher Id | ||
| Resistance | 200mΩ @ -10V | 110mΩ @ -10V | 110mΩ @ -10V — lower Rds | ||
| Temperature | missing | -55 to 150C | -55 to 150C — target temp absent |
Application & sourcing insights
Questions & answers
WST03P06 is the closest provided candidate, but it still needs pinout and derating review.