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| Part Number | BD677A | BD679A | BD677AS | BD678A | BD677AG | BD677G | BD675A | BD676A | BD677 |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | Fairchild Semiconductor | STMicroelectronics | onsemi | onsemi | onsemi | onsemi | STMicroelectronics |
| Product Status | Active | Active | Active | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
| Transistor Type | NPN - Darlington | NPN - Darlington | NPN - Darlington | PNP - Darlington | NPN - Darlington | NPN - Darlington | NPN - Darlington | PNP - Darlington | NPN - Darlington |
| Current - Collector (Ic) (Max) | 4 A | 4 A | 4 A | 4 A | 4 A | 4 A | 4 A | 4 A | 4 A |
| Voltage - Collector Emitter Breakdown (Max) | 60 V | 80 V | 60 V | 60 V | 60 V | 60 V | 45 V | 45 V | 60 V |
| Vce Saturation (Max) @ Ib, Ic | 2.8V @ 40mA, 2A | 2.8V @ 40mA, 2A | 2.8V @ 40mA, 2A | 2.8V @ 40mA, 2A | 2.8V @ 40mA, 2A | 2.5V @ 30mA, 1.5A | 2.8V @ 40mA, 2A | 2.8V @ 40mA, 2A | 2.5V @ 30mA, 1.5A |
| Current - Collector Cutoff (Max) | 500µA | 500µA | 500µA | 500µA | 500µA | 500µA | 500µA | 500µA | 500µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 750 @ 2A, 3V | 750 @ 2A, 3V | 750 @ 2A, 3V | 750 @ 2A, 3V | 750 @ 2A, 3V | 750 @ 1.5A, 3V | 750 @ 2A, 3V | 750 @ 2A, 3V | 750 @ 1.5A, 3V |
| Power - Max | 40 W | 40 W | 40 W | 40 W | 40 W | 40 W | 40 W | 40 W | 40 W |
| Frequency - Transition | - | - | - | - | - | - | - | - | - |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole | 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 | TO-225AA, TO-126-3 | TO-225AA, TO-126-3 |
| Supplier Device Package | SOT-32-3 | SOT-32-3 | TO-126-3 | SOT-32-3 | TO-126 | TO-126 | TO-126 | TO-126 | SOT-32-3 |
