KSC945O 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): 70 to 140
• Transition Frequency, min: 300 MHz
• Noise Figure, max: 4 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SC945R transistor

The KSC945O 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, base, and collector leads. The KSC945CO transistor (with suffix "C") is the center collector version of the KSC945O.
Here is an image showing the pin diagram of this transistor.The KSC945O transistor can have a current gain of 70 to 140. The gain of the KSC945 will be in the range from 40 to 700, for the KSC945G it will be in the range from 200 to 400, for the KSC945L it will be in the range from 350 to 700, for the KSC945R it will be in the range from 40 to 80, for the KSC945Y it will be in the range from 120 to 240.The complementary PNP transistor to the KSC945O is the KSA733O.The 2SC2712 (SOT-23), 2SC2712-O (SOT-23), 2SC4116 (SOT-323), 2SC4116-O (SOT-323), 2SC4738 (SOT-23), 2SC4738-O (SOT-23), FJX945 (SOT-323), FJX945O (SOT-323), KTC3875 (SOT-23), KTC3875O (SOT-23), KTC3875S (SOT-23) and KTC3875S-O (SOT-23) is the SMD version of the KSC945O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The 2SC945R is the TO-92 version of the KSC945O.You can replace the KSC945O with the 2SC1008, 2SC1008O, 2SC1211, BC537, BC537-10, BC538, BC538-10, HS945, HS945-O, KSC1008, KSC1008O, KSP05, KSP06, KTC9014, KTC9014A, MPS6717, MPS6717G, MPSW05, MPSW05G, MPSW06, MPSW06G, ZTX451, ZTX452 or ZTX453.