FS2310
FUXINSEMI
Needs validationmedium risk
FS2310 may fit derated CJ3400 loads but has higher RDS(on) and lower current.
Best Alternatives to CJ3400
CJ3400 is a 30V SOT-23 N-MOSFET. Listed alternatives require FAE review because pinout is not verified.
AI replacement insight
Electrical riskhigh
Several candidates miss 30V or 5.8A.
Package riskmedium
SOT-23 matches, but pinout is missing.
Firmware risklow
Discrete MOSFET; no firmware.
Sourcing riskmedium
AO3416 is NRND.
Can it be replaced directly?
No verified pin-compatible CJ3400 replacement is proven from the provided fields.
Best replacement path
Start with FS2310 or AO3422 for derated loads, then verify pinout and loss.
Main risk
Pinout is unverified and many options need voltage or current derating.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | CJ3400 | FS2310 | AO3422 | AO3416 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT-23 | SOT-23 | SOT-23 | SOT-23 — Same package name.; AO3422: Same package name.; AO3416: Same package name.; SI2300: Same package name. |
| Pinout | 3-pin | 3-pin | 3-pin | 3-pin | 3-pin — Pin functions not shown.; AO3422: Pin functions missing.; AO3416: Pin functions missing.; SI2300: Pin functions missing. |
| Voltage | 30V | 60V | 60V | 20V | 60V / 20V — Meets voltage margin.; AO3422: Good voltage headroom.; AO3416: Fails 30V rating.; SI2300: Fails target rating. |
| Current | 5.8A | 3A | 3A | 6.5A | 3A / 6.5A / 6A — Needs load derating.; AO3422: Lower ID.; AO3416: Higher ID.; SI2300: Similar ID. |
| Resistance | 35/40mΩ | 100/120mΩ | 105/125mΩ | - | 100/120mΩ / 105/125mΩ / 48mΩ@4.5V — Higher loss.; AO3422: More conduction loss.; SI2300: Higher loss. |
| Lifecycle | - | - | - | NRND | NRND — Not for new designs. |
Application & sourcing insights
Questions & answers
FS2310 or AO3422 are the safest listed starting points for derated loads, but both need pinout and thermal review.