KTC4370AY Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 180 V
• Collector-Base Voltage, max: 180 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1.5 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.The KTC4370AY transistor can have a current gain of 120 to 240. The gain of the KTC4370A will be in the range from 70 to 240, for the KTC4370AO it will be in the range from 70 to 140.The complementary PNP transistor to the KTC4370AY is the KTA1659AY.You can replace the KTC4370AY with the 2SC2238A, 2SC2238AY, 2SC2238B, 2SC2238BY, 2SC2336, 2SC2336A, 2SC2336B, 2SC3298A, 2SC3298A-Y, 2SC3298B, 2SC3298B-Y, 2SC4382, 2SC4883A, 2SC5171, 2SD1264A, 2SD1264A-P, 2SD772A, 2SD772B, 2SD792A, 2SD792B, KTC2238A, KTC2238AY, KTD2061, KTD2061Y, MJE15032, MJE15032G, MJE15034 or MJE15034G.