| Part Number | TIP121TU | TIP125TU |
|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor |
| Category | Transistors - Bipolar (BJT) - Single | Transistors - Bipolar (BJT) - Single |
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| Product Status | Obsolete | Active |
| Transistor Type | NPN - Darlington | PNP - Darlington |
| Current - Collector (Ic) (Max) | 5 A | 5 A |
| Voltage - Collector Emitter Breakdown (Max) | 80 V | 60 V |
| Vce Saturation (Max) @ Ib, Ic | 4V @ 20mA, 5A | 4V @ 20mA, 5A |
| Current - Collector Cutoff (Max) | 500µA | 2mA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 1000 @ 3A, 3V | 1000 @ 3A, 3V |
| Power - Max | 2 W | 2 W |
| Frequency - Transition | - | - |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | TO-220-3 | TO-220-3 |
| Supplier Device Package | TO-220-3 | TO-220-3 |