2SD1682 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): 100 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 transistor can have a current gain of 100 to 560. The gain of the 2SD1682-R 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, for the 2SD1682-U it will be in the range from 280 to 560.Sometimes the "2S" prefix is not marked on the package - the 2SD1682 might only be marked "D1682".The complementary PNP transistor to the 2SD1682 is the 2SB1142.The 2SD1623 (SOT-89) is the SMD version of the 2SD1682 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD1682 with the 2SD1348, 2SD1683, BD189, MJE225, MJE242 or MJE244.