2SD610-S Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 200 V
• Collector-Base Voltage, max: 250 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 2 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 40 to 80
• Transition Frequency, min: 5 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SD610-S transistor can have a current gain of 40 to 80. The gain of the 2SD610 will be in the range from 40 to 200, for the 2SD610-Q it will be in the range from 100 to 200, for the 2SD610-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SD610-S might only be marked "D610-S".The complementary PNP transistor to the 2SD610-S is the 2SB630-S.You can replace the 2SD610-S with the 2SC2333, 2SC2333K, 2SC2335, 2SC2335-K, 2SC2898, 2SC3055, 2SC3310, 2SC4242, 2SD772A, 2SD772B, 2SD792A, 2SD792B, BUX84, KSC2333, KSC2333-Y, KSC2335, KSC2335-Y or MJE13070.