BC547 BJT NPN Transistor 45V 100mA TO-92

BC547 BJT NPN Transistor 45V 100mA TO-92 The BC547 is a general‑purpose NPN silicon transistor designed for low‑current switching and amplification. With a collector‑emitter voltage rating of 45 V and a maximum collector current of 100 mA, it’s ideal for signal processing, driver stages, and interface applications in audio, instrumentation, and control circuits. Features High Voltage Capability: V CEO = 45 V Moderate Current Handling: I C = 100 mA Low Saturation Voltages: V CE(sat) ≈ 90 mV @ 10 mA Wide h FE Gain Classification (A: 110–220, B: 200–450, C: 420–800) High Transition Frequency: f T ≈ 300 MHz Low Noise Figure: NF ≈ 2 dB Compact TO‑92 Package Specifications Parameter Symbol Test Conditions Min Typ Max Units Collector–Emitter Voltage V CEO – – – 45 V Collector–Base Voltage V CBO – – – 50 V Emitter–Base Voltage V EBO – – – 5 V Collector Current (DC) I C – – – 100 mA Power Dissipation P C – – – 500 mW DC Current Gain h FE V CE = 5V, I C = 2mA 110 110–800 800 – Saturation Voltage (C–E) V CE(sat) I C =10 mA, I B =0.5 mA – 90 200 mV Saturation Voltage (B–E) V BE(sat) I C =10 mA, I B =0.5 mA – 700 900 mV Transition Frequency f T V CE =5 V, I C =10 mA, f=100 MHz – 300 – MHz Output Capacitance C ob V CB =10 V, I E =0, f=1 MHz – 3.5 6 pF Input Capacitance C ib V EB =0.5 V, I C =0, f=1 MHz – 9 – pF Pinout: Applications Signal Amplification: Pre‑amplifiers, oscillators, and linear stages Switching: LED drivers, relay drivers, transistor‑transistor logic (TTL) interfaces Audio Circuits: Low‑noise stages in audio pre‑amps General‑Purpose: Analog/digital interface, sensor signal conditioning, hobbyist and educational projects Package Included: 1x BC547 BJT NPN Transistor 45V 100mA TO-92. Datasheet: BC547 Bipolar Junction Transistor.

BC547 NPN Transistor – 45V, 100 mA, TO‑92 The BC547 is a versatile NPN bipolar junction transistor (BJT) housed in a compact TO-92 package. Designed for low-power amplification and switching, this transistor is popular for general-purpose audio, signal and control applications. With a collector-emitter breakdown voltage of 45 V and continuous collector current up to 100 mA, the BC547 provides plenty of headroom for interfacing logic circuits, driving small loads and building analog amplifiers. Its high DC current gain (hFE) classification ranges from 110 to 800 across A/B/C variants, and the device exhibits very low saturation voltage and low noise for clean signal amplification. Thanks to a typical transition frequency around 300 MHz and operation up to +150 °C, the BC547 is suitable for both hobbyist projects and professional designs. Features • Voltage & current capability: collector–emitter voltage (VCEO) 45 V, collector–base voltage 50 V, emitter–base voltage 6 V; collector current up to 100 mA and power dissipation 500 mW. • High gain classifications: hFE ranges from 110–220 (A class) through 200–450 (B) to 420–800 (C). • Low saturation voltage: VCE(sat) ≈ 90 mV at 10 mA base current; < 0.2 V at 100 mA collector current. • Fast switching: transition frequency (~300 MHz) supports high-frequency operation. • Low noise: noise figure ≈ 2 dB for use in audio pre-amplifiers. • Wide operating temperature: –65 °C to +150 °C. • Package: TO-92 with 3 terminals – 1: Collector, 2: Base, 3: Emitter. Applications • Signal amplification: pre-amplifiers, oscillators and linear amplifier stages. • Switching: LED drivers, relay drivers and TTL interface circuits. • Audio circuits: low-noise stages in audio pre-amps. • General purpose: analog/digital interfacing, sensor signal conditioning, hobbyist and educational projects. Package contents • 1 × BC547 NPN transistor.

BC547 NPN Transistor, 100 mA, 45 V, 3-Pin TO-92 Bipolar Junction Transistors (BJT) broad range provides complete solutions for various circuit application needs. Innovative packages are designed for minimal size, highest reliability and maximum thermal performance. Specifications: Attribute Value Transistor Type NPN Maximum DC Collector Current 100 mA Maximum Collector Emitter Voltage 45 V Package Type TO-92 Mounting Type Through Hole Maximum Power Dissipation 500 mW Minimum DC Current Gain 200, 420 Transistor Configuration Single Maximum Collector Base Voltage 50 V Maximum Emitter Base Voltage 6 V Maximum Operating Frequency 1 MHz Pin Count 3 Number of Elements per Chip 1 Maximum Operating Temperature +150 °C Dimensions 4.58 x 3.86 x 4.58mm Package Includes: 1x Transistor Documents: Datasheet Related Products: Transistors