2SC3198 NPN Bipolar Transistors BJT TO-92

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2SC3198 NPN Bipolar Transistors BJT TO-92 The 2SC3198 is an NPN silicon small-signal transistor offered in compact TO-92 or SOT-23 packages. It’s designed for low-noise operation and is manufactured as a complementary pair to the 2SA1266, making it suitable where matched NPN/PNP stages are needed. The device emphasizes stable performance across typical ambient ranges and is packaged for easy PCB mounting. electrically, the 2SC3198 supports collector-emitter voltages up to 50 V and moderate collector currents, delivering consistent DC current gain across low to moderate bias conditions. It exhibits low output capacitance and a moderate transition frequency, which helps maintain gain and response in audio and general-purpose signal circuits while keeping intrinsic noise low. In practice the 2SC3198 is a compact, low-noise NPN transistor intended for signal amplification and switching in space-constrained designs. Its TO-92/SOT-23 options make it straightforward to use both in through-hole prototypes and compact surface-mount PCBs. Features: High DC current gain: h FE = 70–700 at I C = 2 mA Excellent h FE linearity Excellent safe operating area Low noise figure for cleaner amplification Specifications Specification Value Collector-Base Breakdown Voltage: 50 V Collector-Emitter Breakdown Voltage: 50 V Emitter-Base Breakdown Voltage: 5 V Maximum Collector Current: 150 mA Maximum Emitter Current: 150 mA Collector Power Dissipation (TO-92): 0.4 W Junction Temperature: 125 °C Storage Temperature Range: -55 °C to +125 °C Collector Cut-off Current: 0.1 μA Emitter Cut-off Current: 0.1 μA DC Current Gain (HFE, IC = 2 mA): 70 – 400 DC Current Gain (HFE, IC = 150 mA): Min. 25 Collector-Emitter Saturation Voltage: 0.3 V Base-Emitter Saturation Voltage: 1.0 V Transition Frequency: 80 MHz Output Capacitance: 7 pF Noise Figure: 10 dB Pinout: Applications: Low‑frequency amplifier stages. Low‑noise amplifier circuits. General‑purpose signal amplification. Package Contents: 1x 2SC3198 NPN Bipolar Transistors BJT TO-92 Datasheet