2SD1682-U Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 2.5 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 280 to 560
• Transition Frequency, min: 140 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SD1682-U transistor can have a current gain of 280 to 560. The gain of the 2SD1682 will be in the range from 100 to 560, for the 2SD1682-R it will be in the range from 100 to 200, for the 2SD1682-S it will be in the range from 140 to 280, for the 2SD1682-T it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SD1682-U might only be marked "D1682-U".The 2SD1623 (SOT-89) and 2SD1623-U (SOT-89) is the SMD version of the 2SD1682-U transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD1682-U with the 2SD1348, 2SD1348-U, 2SD1683, 2SD1683-U, BD189, MJE225, MJE242 or MJE244.