BC548 Specs and Replacement
The BC548 is a widely used NPN bipolar junction transistor designed for low-power general-purpose applications. The device supports a maximum collector-emitter voltage of 30V and a continuous collector current of 100mA. Its gain (hFE) typically ranges from 110 to 800, depending on the variant (A, B, or C), making it suitable for sensitive amplification stages. With a transition frequency of around 150MHz, the BC548 performs well in audio and low-frequency RF circuits. Packaged in TO92, it offers thermal stability and low noise, which is critical in preamplifiers and sensor interfaces. Its reliability and predictable characteristics make the BC548 a standard choice in analog electronics education, prototyping, consumer devices.
Type Designator: BC548
Material of Transistor: Si
Polarity: NPN
Maximum Collector Power Dissipation (Pc): 0.625
W
Maximum Collector-Base Voltage |Vcb|: 30
V
Maximum Collector-Emitter Voltage |Vce|: 30
V
Maximum Emitter-Base Voltage |Veb|: 5
V
Maximum Collector Current |Ic max|: 0.1
A
Max. Operating Junction Temperature (Tj): 150
°C
Transition Frequency (ft): 150
MHz
Collector Capacitance (Cc): 1.7
pF
Forward Current Transfer Ratio (hFE), MIN: 110
Noise Figure, dB: -
Package: TO92
BC548 Transistor Equivalent Substitute - Cross-Reference Search
BC548 detailed specifications
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MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by BC546/D Amplifier Transistors BC546, B NPN Silicon BC547, A, B, C BC548, A, B, C COLLECTOR 1 2 BASE 3 EMITTER 1 MAXIMUM RATINGS 2 3 BC BC BC 546 547 548 Rating Symbol Unit CASE 29 04, STYLE 17 TO 92 (TO 226AA) Collector Emitter Voltage VCEO 65 45 30 Vdc Collector Base Voltage VCBO 80 50 30 Vdc Emitt... See More ⇒
bc546 bc547 bc548 bc549 bc550.pdf
BC546/547/548/549/550 Switching and Applications High Voltage BC546, VCEO=65V Low Noise BC549, BC550 Complement to BC556 ... BC560 TO-92 1 1. Collector 2. Base 3. Emitter NPN Epitaxial Silicon Transistor Absolute Maximum Ratings Ta=25 C unless otherwise noted Symbol Parameter Value Units VCBO Collector-Base Voltage BC546 80 V BC547/550 50 V BC548/549 30 V VCE... See More ⇒
bc548 bc548a bc548b bc548c.pdf
Discrete POWER & Signal Technologies BC548 BC548A BC548B BC548C E TO-92 B C NPN General Purpose Amplifier This device is designed for use as general purpose amplifiers and switches requiring collector currents to 300 mA. Sourced from Process 10. See PN100A for characteristics. Absolute Maximum Ratings* TA = 25 C unless otherwise noted Symbol Parameter Value Units VCEO Collector-... See More ⇒
bc546 bc547 bc548 to-92.pdf
BC546A/B/C MCC Micro Commercial C omponents TM BC547A/B/C 20736 Marilla Street Chatsworth Micro Commercial Components CA 91311 Phone (818) 701-4933 BC548A/B/C Fax (818) 701-4939 Features NPN Silicon Lead Free Finish/RoHS Compliant ("P" Suffix designates RoHS Compliant. See ordering information) Amplifier Transistor Through Hole Package 150 C Junction Tempe... See More ⇒
Detailed specifications: 2SA1771 , 2SA178 , 2SA1790 , 2SA1791 , 2SA1792 , 2SA1793 , 2SA1794 , 2SA1795 , TIP42C , 2SA1799 , 2SA17H , 2SA18 , 2SA180 , 2SA1800 , 2SA1800O , 2SA1800R , 2SA1800Y .
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