AO3480C
Alpha & Omega Semiconductor Inc.
Needs validationmedium risk
AO3480C is a close SOT-23 N-MOSFET candidate for SI2300 with higher V/I ratings.
Best Alternatives to SI2300
SI2300 is a 20V SOT-23 N-channel MOSFET. Several SOT-23 N-MOSFETs may work, but pinout and derating need FAE review.
AI replacement insight
Electrical riskmedium
RDS, Qg, SOA need check.
Package riskmedium
SOT-23 matches, pinout unknown.
Firmware risklow
Discrete MOSFET.
Sourcing riskmedium
AO3400A is NRND.
Can it be replaced directly?
No verified pin-compatible replacement is proven from the provided fields.
Best replacement path
Start with AO3480C or AO3400C, then verify GDS pinout and switching losses.
Main risk
Pinout is not confirmed and PDF checks are pending.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SI2300 | AO3480C | AO3400C | AO3400A | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT-23 | SOT-23 | SOT-23 | SOT-23 — same package; AO3400C: same package; AO3400A: same package; IRLML6244TRPBF: same package |
| Pinout | 3-pin MOSFET | 3-pin MOSFET | 3-pin MOSFET | 3-pin MOSFET | 3-pin MOSFET — pin functions absent; AO3400C: pin functions absent; AO3400A: pin functions absent; IRLML6244TRPBF: pin functions absent |
| Voltage | 20V | 30V | 30V | 30V | 30V / 20V — meets margin; AO3400C: meets margin; AO3400A: meets margin; IRLML6244TRPBF: no 1.1x margin |
| Current | 4A | 6.2A | 6.2A | 5.7A | 6.2A / 5.7A / 6A — higher rating; AO3400C: higher rating; AO3400A: higher rating; IRLML6244TRPBF: higher rating |
| Resistance | 25mΩ typ @4.5V | <26mΩ @4.5V | <20mΩ | - | <26mΩ @4.5V / <20mΩ / 25mΩ max @4.5V — close, max vs typ; AO3400C: gate point missing; IRLML6244TRPBF: similar |
| Lifecycle | Active | - | - | NRND | NRND — sourcing risk |
Application & sourcing insights
Questions & answers
AO3480C or AO3400C look strongest from catalog data, but both need pinout and datasheet review.