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| Part Number | KSD1621STF | KSD1621TTF | KSD1621UTF | KSD1621RTF |
|---|---|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Transistor Type | NPN | NPN | NPN | NPN |
| Current - Collector (Ic) (Max) | 2 A | 2 A | 2 A | 2 A |
| Voltage - Collector Emitter Breakdown (Max) | 25 V | 25 V | 25 V | 25 V |
| Vce Saturation (Max) @ Ib, Ic | 400mV @ 75mA, 1.5A | 400mV @ 75mA, 1.5A | 400mV @ 75mA, 1.5A | 400mV @ 75mA, 1.5A |
| Current - Collector Cutoff (Max) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) | 100nA (ICBO) |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 140 @ 100mA, 2V | 200 @ 100mA, 2V | 280 @ 100mA, 2V | 100 @ 100mA, 2V |
| Power - Max | 500 mW | 500 mW | 500 mW | 500 mW |
| Frequency - Transition | 150MHz | 150MHz | 150MHz | 150MHz |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | TO-243AA | TO-243AA | TO-243AA | TO-243AA |
| Supplier Device Package | SOT-89-3 | SOT-89-3 | SOT-89-3 | SOT-89-3 |
