| Part Number | BD438S | BD438 | 
|---|---|---|
| Manufacturer | Fairchild Semiconductor | STMicroelectronics | 
| Category | Transistors - Bipolar (BJT) - Single | Transistors - Bipolar (BJT) - Single | 
|   |   | |
| Product Status | Active | Active | 
| Transistor Type | PNP | PNP | 
| Current - Collector (Ic) (Max) | 4 A | 4 A | 
| Voltage - Collector Emitter Breakdown (Max) | 45 V | 45 V | 
| Vce Saturation (Max) @ Ib, Ic | 600mV @ 200mA, 2A | 600mV @ 200mA, 2A | 
| Current - Collector Cutoff (Max) | 100µA | 100µA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 30 @ 10mA, 5V | 30 @ 10mA, 5V | 
| Power - Max | 36 W | 36 W | 
| Frequency - Transition | 3MHz | 3MHz | 
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | 
| Supplier Device Package | TO-126-3 | SOT-32-3 |