2SD545-G Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 25 V
• Collector-Base Voltage, max: 25 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.6 W
• DC Current Gain (h_fe): 280 to 560
• Transition Frequency, min: 180 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SD545-G is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, collector, and base leads.
Here is an image showing the pin diagram of this transistor.The 2SD545-G transistor can have a current gain of 280 to 560. The gain of the 2SD545 will be in the range from 60 to 560, for the 2SD545-D it will be in the range from 60 to 120, for the 2SD545-E it will be in the range from 100 to 200, for the 2SD545-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SD545-G might only be marked "D545-G".The complementary PNP transistor to the 2SD545-G is the 2SB598-G.The BC818 (SOT-23), BC818-40 (SOT-23), BC818-40W (SOT-323), BC818W (SOT-323) and BCX20 (SOT-23) is the SMD version of the 2SD545-G transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD545-G with the 2SC2500, 2SC2500-A, 2SC2500-B, 2SC2500-C, 2SC2500-D, 2SD1207, 2SD1207-U, 2SD1347, 2SD1347U, 2SD1616, 2SD1835, 2SD1835-U, 2SD789, KSC2500, KSC2500-A, KSC2500-B, KSC2500-C, KSC2500-D, KSC5019 or KSD1616.