MMBT2222ATT1G
onsemi
Needs validationmedium risk
MMBT2222ATT1G is a same-package NPN candidate with higher current but lower minimum gain.
Best Alternatives to MMBT3904TT1G
MMBT3904TT1G is a 40V, 200mA NPN BJT in SC-75. Same-package options still need pinout and gain review.
AI replacement insight
Electrical riskmedium
gain, fT, and derating vary
Package riskhigh
most candidates change footprint
Firmware risklow
discrete BJT has no firmware
Sourcing riskmedium
one rejected option is obsolete
Can it be replaced directly?
No verified pin-compatible replacement is proven from the provided fields.
Best replacement path
Start with MMBT2222ATT1G for same package review, then verify pinout and gain.
Main risk
Pinout is missing for all kept candidates.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | MMBT3904TT1G | MMBT2222ATT1G | PZT3904 | FMMT493 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-416/SC-75 | SOT-416 (SC-75) | SOT-223 | SOT-23 | SOT-416 (SC-75) / SOT-223 / SOT-23 — same named package; PZT3904: layout change; FMMT493: layout change; 2SC1815: layout change |
| Pinout | 3-pin BJT | 3-pin BJT | 3-pin SOT-223 | 3-pin SOT-23 | 3-pin BJT / 3-pin SOT-223 / 3-pin SOT-23 — pin functions missing; PZT3904: pin functions missing; FMMT493: pin functions missing; 2SC1815: pin functions missing |
| Voltage | 40 V | 40 V | 40 V | 100 V | 40 V / 100 V / 50 V — no 1.1x margin; PZT3904: no 1.1x margin; FMMT493: higher VCEO; 2SC1815: meets 1.1x |
| Current | 200 mA | 600 mA | 200 mA | 1 A | 600 mA / 200 mA / 1 A / 150 mA — higher IC; PZT3904: same IC; FMMT493: higher IC; 2SC1815: lower IC |
| Application | hFE 100-300 | hFE 35-300 | 300 MHz hFE 100-300 | 150 MHz | hFE 35-300 / 300 MHz hFE 100-300 / 150 MHz / 80 MHz — lower min gain; PZT3904: key values align; FMMT493: lower fT; 2SC1815: lower fT |
Application & sourcing insights
Questions & answers
MMBT2222ATT1G is the closest listed same-package NPN candidate, but pinout and hFE must be checked.