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| Part Number | BD238 | BD238S | BD238G | BD138 | BD234 | BD235 | BD237 | 
|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | onsemi | STMicroelectronics | onsemi | STMicroelectronics | STMicroelectronics | 
| Product Status | Obsolete | Obsolete | Obsolete | Active | Obsolete | Obsolete | Active | 
| Transistor Type | PNP | PNP | PNP | PNP | PNP | NPN | NPN | 
| Current - Collector (Ic) (Max) | 2 A | 2 A | 2 A | 1.5 A | 2 A | 2 A | 2 A | 
| Voltage - Collector Emitter Breakdown (Max) | 80 V | 80 V | 80 V | 60 V | 45 V | 60 V | 80 V | 
| Vce Saturation (Max) @ Ib, Ic | 600mV @ 100mA, 1A | 600mV @ 100mA, 1A | 600mV @ 100mA, 1A | 500mV @ 50mA, 500mA | 600mV @ 100mA, 1A | 600mV @ 100mA, 1A | 600mV @ 100mA, 1A | 
| Current - Collector Cutoff (Max) | 100µA (ICBO) | 100µA (ICBO) | 100µA (ICBO) | 100nA (ICBO) | 100µA (ICBO) | 100µA (ICBO) | 100µA (ICBO) | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 25 @ 1A, 2V | 25 @ 1A, 2V | 40 @ 150mA, 2V | 40 @ 150mA, 2V | 25 @ 1A, 2V | 25 @ 1A, 2V | 25 @ 1A, 2V | 
| Power - Max | 25 W | 25 W | 25 W | 1.25 W | 25 W | 25 W | 25 W | 
| Frequency - Transition | - | 3MHz | 3MHz | - | 3MHz | - | - | 
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | -55°C ~ 150°C (TJ) | 150°C (TJ) | -55°C ~ 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | 
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | 
| Package / Case | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 | 
| Supplier Device Package | SOT-32-3 | TO-126-3 | TO-126 | SOT-32-3 | TO-126 | SOT-32-3 | SOT-32-3 |