KN3904 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.2 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 100 to 300
• Transition Frequency, min: 300 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2N3904 transistor

The KN3904 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 complementary PNP transistor to the KN3904 is the KN3906.The 2SC1623 (SOT-23), 2SC2712 (SOT-23), 2SC4116 (SOT-323), 2SC4738 (SOT-23), FJX3904 (SOT-323), FJX945 (SOT-323), FMMT3904 (SOT-23), KN3904S (SOT-23), KSC1623 (SOT-23), KST3904 (SOT-23), KTC3875 (SOT-23), KTC3875S (SOT-23), MMBT3904 (SOT-23), MMBT3904L (SOT-23), MMBT3904LT1 (SOT-23), MMBT3904LT1G (SOT-23), MMBT3904LT3 (SOT-23), MMBT3904LT3G (SOT-23), MMBT3904T (SOT-523F), MMBT3904TT1 (SOT-416), MMBT3904TT1G (SOT-416), MMBT3904WT1 (SOT-323), MMBT3904WT1G (SOT-323), MMST3904 (SOT-323), PMBS3904 (SOT-23), PMBT3904 (SOT-23), PMST3904 (SOT-323), PZT3904 (SOT-223) and TMBT3904 (SOT-23) is the SMD version of the KN3904 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The 2N3904 is the TO-92 version of the KN3904.You can replace the KN3904 with the 2N3904, 2N4401, 2SC1008, 2SC1210, 2SC1211, 2SC815, BC537, BC538, KN2222A, KSC1008, KSC815, KSP05, KSP06, KSP2222A, KSP8098, KSP8099, KTN2222A, MPS2222A, MPS2222AG, MPS650, MPS650G, MPS651, MPS651G, MPS8098, MPS8098G, MPS8099, MPS8099G, MPSA05, MPSA05G, MPSA06, MPSA06G, MPSW01A, MPSW01AG, MPSW05, MPSW05G, MPSW06, MPSW06G, NTE123AP, P2N2222A, P2N2222AG, PN100, PN2219A, PN2222A, PN3569, PN4033 or ZTX450.