| Price | $0.50 |
|---|---|
| Category | Components |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
A medium-power NPN transistor in the flat TO-126 case, sitting neatly between a TO-92 small-signal type and a TO-220 power device: 80 V, 1.5 A continuous and a gain of 63 to 250 at 150 mA. Common in audio driver and output stages, small motor and relay drivers and linear supply pass circuits. It is a plain transistor, not a Darlington, so it needs proper base current - roughly a hundredth of the load current. PNP complement is the BD140.
Key features
- NPN, 80 V collector-emitter, 1.5 A continuous
- Gain 63-250 at 150 mA, still 25 at 500 mA
- Saturation 0.5 V max at 500 mA
- Transition frequency 190 MHz typ
- TO-126 flat pack, centre pin is the collector
- Bolt-down tab takes a small heatsink
- PNP complement is the BD140
Details
Specifications
| Model | BD139 |
|---|---|
| Type | NPN medium-power transistor |
| Package | TO-126 |
| Collector-emitter voltage | 80 V |
| Collector-base voltage | 100 V |
| Emitter-base voltage | 5 V |
| Continuous current | 1.5 A |
| Peak current | 2 A |
| DC current gain | 63 to 250 at 150 mA; 40 min at 5 mA; 25 min at 500 mA |
| Saturation voltage | 0.5 V max at 500 mA, base 50 mA |
| Transition frequency | 190 MHz typ |
| Power dissipation | 1.25 W in free air at 25 C (more with a heatsink) |
| Complementary type | BD140 (PNP) |
