KTC9018I Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 40 V
• Emitter-Base Voltage, max: 4 V
• Collector Current − Continuous, max: 0.02 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 130 to 198
• Transition Frequency, min: 500 MHz
• Noise Figure, max: 4 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The KTC9018I 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.
Here is an image showing the pin diagram of this transistor.The KTC9018I transistor can have a current gain of 130 to 198. The gain of the KTC9018 will be in the range from 40 to 198, for the KTC9018E it will be in the range from 40 to 59, for the KTC9018F it will be in the range from 54 to 80, for the KTC9018G it will be in the range from 72 to 108, for the KTC9018H it will be in the range from 97 to 146.You can replace the KTC9018I with the 2N3904, 2N4123, 2N4401, 2SC1008, 2SC1008Y, 2SC1210, 2SC1211, 2SC815, 2SC815Y, 2SD471A, 2SD471AY, BC537, BC537-16, HS945, HS945-Y, KN2222, KN2222A, KN3904, KSC1008, KSC1008Y, KSC815, KSC815Y, KSC945, KSC945Y, KSD471A, KSD471AY, KSP05, KSP2222A, KSP8098, KTC8050, KTC8050C, KTC815, KTC815-O, KTC815-Y, KTC9013, KTC9014, KTC9014B, KTN2222, KTN2222A, MPS2222, MPS2222A, MPS2222AG, MPS2222G, MPS3416, MPS3704, MPS3904, MPS650, MPS650G, MPS651, MPS651G, MPS6531, MPS6532, MPS6602, MPS6602G, MPS8098, MPS8098G, MPSA05, MPSA05G, MPSW01, MPSW01A, MPSW01AG, MPSW01G, MPSW05, MPSW05G, NTE123AP, P2N2222A, P2N2222AG, PN100, PN2219, PN2219A, PN2222, PN2222A, PN2484, PN3569, S9014, S9014B, SS9014, SS9014B, ZTX449 or ZTX450.