Diotec Semiconductor BC54 Series

9 variants · Diotec SemiconductorAll Discrete Semiconductors →

About the Diotec Semiconductor BC54 Series

The Diotec Semiconductor BC54 Series series groups 9 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common case of TO-226-3, TO-92-3 (TO-226AA), current - collector (Ic) of 100 mA and current - collector cutoff of 15nA. Variants differ by DC current gain (hFE) (Min) @ ic, vce and voltage - collector emitter breakdown, so you can match the exact DC current gain (hFE) (Min) @ ic, vce your application requires using the selection guide below. The range mixes active and legacy part numbers, so you can source both current Diotec Semiconductor BC54 Series variants and discontinued ones from a single page.

Select a variant by

DC current gain (hFE) (Min) @ ic, vce: 110 @ 2mA, 5V · 200 @ 2mA, 5V · 420 @ 2mA, 5V
Voltage - collector emitter breakdown: 30 V · 45 V

Shared specifications

Case: TO-226-3, TO-92-3 (TO-226AA)
Current - collector (Ic): 100 mA
Current - collector cutoff: 15nA
FET type: NPN
Frequency: 300MHz
Mounting: Through Hole
Operating temperature: -55°C~150°C(TJ)
Package: Strip
Power - max: 500 mW
Vce saturation (Max) @ ib, ic: 600mV @ 5mA, 100mA

Variant comparison

Parameter	BC547BBK	BC548A	BC548C	BC549CBK
DC current gain (hFE) (Min) @ ic, vce	200 @ 2mA, 5V	110 @ 2mA, 5V	420 @ 2mA, 5V	420 @ 2mA, 5V
Voltage - collector emitter breakdown	45 V	30 V	30 V	30 V

Request a quote on any Diotec Semiconductor BC54 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.