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| Part Number | 2SD1994ARA | 2SD1994ASA | 2SD1991ARA |
|---|---|---|---|
| Manufacturer | Panasonic Electronic Components | Panasonic Electronic Components | Panasonic Electronic Components |
| Product Status | Obsolete | Obsolete | Obsolete |
| Transistor Type | NPN | NPN | NPN |
| Current - Collector (Ic) (Max) | 1 A | 1 A | 100 mA |
| Voltage - Collector Emitter Breakdown (Max) | 50 V | 50 V | 50 V |
| Vce Saturation (Max) @ Ib, Ic | 400mV @ 50mA, 500mA | 400mV @ 50mA, 500mA | 300mV @ 10mA, 100mA |
| Current - Collector Cutoff (Max) | 100nA (ICBO) | 100nA (ICBO) | 1µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 120 @ 500mA, 10V | 170 @ 500mA, 10V | 210 @ 2mA, 10V |
| Power - Max | 1 W | 1 W | 400 mW |
| Frequency - Transition | 200MHz | 200MHz | 150MHz |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | 3-SIP | 3-SIP | 3-SIP |
| Supplier Device Package | MT-2-A1 | MT-2-A1 | MT-1-A1 |
