2SC4688R 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): 55 to 110
• 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 2SC4688R transistor can have a current gain of 55 to 110. The gain of the 2SC4688 will be in the range from 55 to 160, for the 2SC4688O it will be in the range from 80 to 160.Sometimes the "2S" prefix is not marked on the package - the 2SC4688R might only be marked "C4688R".The complementary PNP transistor to the 2SC4688R is the 2SA1803R.The BDP951 (SOT-223) is the SMD version of the 2SC4688R transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC4688R with the 2SC2563, 2SC2563-R, 2SC2577, 2SC2578, 2SC2579, 2SC2580, 2SC2581, 2SC2706, 2SC2706-R, 2SC2837, 2SC3180, 2SC3180-O, 2SC3180-R, 2SC3181, 2SC3181-O, 2SC3181-R, 2SC3181N, 2SC3181N-O, 2SC3181N-R, 2SC3182, 2SC3182-O, 2SC3182-R, 2SC3280, 2SC3280R, 2SC3284, 2SC3519, 2SC3853, 2SC3854, 2SC3855, 2SC4466, 2SC4467, 2SC4468, 2SC4689, 2SC4689-R, 2SC4690, 2SC4690-R, 2SC5196, 2SC5197, 2SC5198, 2SC5199, 2SD1148, 2SD1148-R, 2SD1840, 2SD1841, 2SD1842, 2SD712, 2SD712R, 2SD716, 2SD716-R, 2SD731, 2SD998, 2SD998-R, BD245B, BD245C, BD249B, BD249C, BD745B, BD745C, BDV93, BDV95, FJA4310, KTD718, KTD718-R, KTD718B, KTD718B-R, KTD998, KTD998-R or TIP35CA.