2SC4688O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 6 A
• Collector Dissipation: 55 W
• DC Current Gain (h_fe): 80 to 160
• Transition Frequency, min: 30 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SC4688O transistor can have a current gain of 80 to 160. The gain of the 2SC4688 will be in the range from 55 to 160, for the 2SC4688R it will be in the range from 55 to 110.Sometimes the "2S" prefix is not marked on the package - the 2SC4688O might only be marked "C4688O".The complementary PNP transistor to the 2SC4688O is the 2SA1803O.The BDP951 (SOT-223) is the SMD version of the 2SC4688O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC4688O with the 2SC2563, 2SC2563-O, 2SC2577, 2SC2578, 2SC2579, 2SC2580, 2SC2581, 2SC2706, 2SC2706-O, 2SC2837, 2SC3180, 2SC3180-O, 2SC3181, 2SC3181-O, 2SC3181N, 2SC3181N-O, 2SC3182, 2SC3182-O, 2SC3280, 2SC3280O, 2SC3284, 2SC3519, 2SC3835, 2SC3853, 2SC3854, 2SC3855, 2SC4278, 2SC4466, 2SC4467, 2SC4468, 2SC4652, 2SC4689, 2SC4689-O, 2SC4690, 2SC4690-O, 2SC5196, 2SC5196O, 2SC5197, 2SC5197O, 2SC5198, 2SC5198O, 2SC5199, 2SC5199O, 2SC5774, 2SC5775, 2SD1046, 2SD1047, 2SD1148, 2SD1148-O, 2SD1288, 2SD1289, 2SD1717, 2SD1717-S, 2SD2052, 2SD2052-S, 2SD2053, 2SD712, 2SD712O, 2SD716, 2SD716-O, 2SD731, 2SD843, 2SD895, 2SD998, 2SD998-O, BD245B, BD245C, BD249B, BD249C, BDV93, BDV95, FJA4310, KTD1047, KTD1047B, KTD718, KTD718-O, KTD718B, KTD718B-O, KTD998, KTD998-O, TIP35CA, TTC0001 or TTC0002.