From the provided list, 2KD3001 is the strongest review candidate, not a verified direct replacement.
Best Alternatives to MMBT3904,215
MMBT3904,215 is an active NPN SOT23 switching transistor. Listed alternatives need FAE review because pinout and speed data are missing.
AI replacement insight
Electrical riskmedium
fT and temp data missing.
Package riskhigh
SOT23 listed, pinout absent.
Firmware risklow
Discrete transistor.
Sourcing riskmedium
Lifecycle shown as nan.
Can it be replaced directly?
No pin-compatible replacement is verified from the provided data.
Best replacement path
Review 2KD3001 first, then verify SOT23 pinout, fT, and temperature range.
Main risk
Pinout and high-frequency behavior are not proven.
Recommended alternatives
Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.
Alternative comparison matrix
| Feature / factor | MMBT3904,215 | 2KD3001 | 2KD3010 | 2KC1004 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT23 | SOT23 | SOT23 | SOT23 | SOT23 — same package text; 2KD3010: same package text; 2KC1004: same package text |
| Pinout | 3-pin E-B-C unknown | pin_count 0 | pin_count 0 | pin_count 0 | pin_count 0 — pinout absent; 2KD3010: pinout absent; 2KC1004: pinout absent |
| Voltage | VCEO 40V | VCEO 50V | VCEO 100V | VCEO 50V | VCEO 50V / VCEO 100V — meets 1.1x rule; 2KD3010: higher rating; 2KC1004: meets 1.1x rule |
| Current | IC 0.2A | IC 1.2A | IC 0.8A | IC 0.1A | IC 1.2A / IC 0.8A / IC 0.1A — higher rating; 2KD3010: higher rating; 2KC1004: 50% of target |
| Power | 250mW | 250mW | - | 200mW | 250mW / 200mW — same listed PD; 2KC1004: lower PD |
| Application | hFE 100-300, fT 300MHz | - | hFE data odd, fT missing | - | hFE data odd, fT missing — speed/gain risk |