| Part Number | BD437 | BD537 |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | Transistors - Bipolar (BJT) - Single | Transistors - Bipolar (BJT) - Single |
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| Product Status | Not For New Designs | Obsolete |
| Transistor Type | NPN | NPN |
| Current - Collector (Ic) (Max) | 4 A | 8 A |
| Voltage - Collector Emitter Breakdown (Max) | 45 V | 80 V |
| Vce Saturation (Max) @ Ib, Ic | 600mV @ 200mA, 2A | 800mV @ 600mA, 6A |
| Current - Collector Cutoff (Max) | 100µA | 100µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 30 @ 10mA, 5V | 15 @ 2A, 2V |
| Power - Max | 36 W | 50 W |
| Frequency - Transition | 3MHz | - |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | TO-225AA, TO-126-3 | TO-220-3 |
| Supplier Device Package | SOT-32-3 | TO-220 |