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| Part Number | 2N4953 | 2N4923 | 
|---|---|---|
| Manufacturer | Fairchild Semiconductor | NTE Electronics, Inc | 
| Product Status | Obsolete | Active | 
| Transistor Type | NPN | NPN | 
| Current - Collector (Ic) (Max) | 1 A | 1 A | 
| Voltage - Collector Emitter Breakdown (Max) | 30 V | 80 V | 
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 15mA, 150mA | 600mV @ 100mA, 1A | 
| Current - Collector Cutoff (Max) | 50nA (ICBO) | 500µA | 
| DC Current Gain (hFE) (Min) @ Ic, Vce | 200 @ 150mA, 10V | 30 @ 500mA, 1V | 
| Power - Max | 625 mW | 30 W | 
| Frequency - Transition | - | 3MHz | 
| Operating Temperature | -55°C ~ 150°C (TJ) | -65°C ~ 150°C (TJ) | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | TO-225AA, TO-126-3 | 
| Supplier Device Package | TO-92-3 | TO-126 |