H945 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: 0.15 A
• Collector Dissipation: 0.25 W
• DC Current Gain (h_fe): 90 to 600
• Transition Frequency, min: 250 MHz
• Noise Figure, max: 4 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SC945 transistor

The H945 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. The HS945 transistor (with suffix "C") is the center collector version of the H945.
Here is an image showing the pin diagram of this transistor.The H945 transistor can have a current gain of 90 to 600. The gain of the H945-K will be in the range from 300 to 600, for the H945-P it will be in the range from 200 to 400, for the H945-Q it will be in the range from 135 to 270, for the H945-R it will be in the range from 90 to 180.The complementary PNP transistor to the H945 is the H733.The 2SC1623 (SOT-23), 2SC2712 (SOT-23), 2SC4116 (SOT-323), 2SC4738 (SOT-23), FJX945 (SOT-323), KSC1623 (SOT-23), KTC3875 (SOT-23) and KTC3875S (SOT-23) is the SMD version of the H945 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The 2SC945 is the TO-92 version of the H945.You can replace the H945 with the 2SC1815, 2SC2458, 2SC3198, 2SC3199, 2SC3916, 2SC3917, 2SC3918, 2SC3919, 2SC3920, 2SC3921, 2SC3922, 2SC3923, C1815, C945, KSC1815, KSC945C, KTC3198 or KTC3199.