Specs side by side
2 parts compared · 12 differing specs across 12 total parameters.
| Parameter | ||
|---|---|---|
| Voltage - Collector Emitter Breakdown | - | 300 V |
| Case | TO-126 (SOT-32) | TO-225AA, TO-126-3 |
| Package | - | Bag |
| Component Category | Medium-Power Complementary Transistors | - |
| Current - Collector (ic) | - | 500 mA |
| Dc Current Gain (hfe) (min) @ Ic, Vce | - | 30 @ 50mA, 10V |
| Fet Type | - | NPN |
| Market Reality | The BD139 / BD140 pair is Europes bench transistor: drivers, small audio stages, series-pass elements in linear regulators and zener-boosted circuits. Production is continuous across many fabs, and the real decisions are grade and mounting: the -10 / -16 gain groups change base drive margins, the metal tab on the back is the collector (not an isolated heatsink surface), and the tempting swap to the higher-current 2SD882 quietly lowers the voltage ceiling from 80V to 30V. | - |
| Mounting | - | Through Hole |
| Power - Max | - | 20 W |
| Role In Circuit | Original Reference Part | - |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | - |
Parts
- BD139 / BD140 · stmicroelectronics
- MJE340 · stmicroelectronics