2SD1622 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 100 to 560
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The 2SD1622 transistor can have a current gain of 100 to 560. The gain of the 2SD1622-R will be in the range from 100 to 200, for the 2SD1622-S it will be in the range from 140 to 280, for the 2SD1622-T it will be in the range from 200 to 400, for the 2SD1622-U it will be in the range from 280 to 560.Sometimes the "2S" prefix is not marked on the package - the 2SD1622 might only be marked "D1622".The complementary PNP transistor to the 2SD1622 is the 2SB1122.You can replace the 2SD1622 with the 2SD1623 or 2SD1624.