How do the onsemi onsemi BC81 Series variants differ?

onsemi BC81 Series part numbers differ by case, DC current gain (hFE) (Min) @ ic, vce, operating temperature and power - max. Use the selection guide above to pick by case.

How many onsemi onsemi BC81 Series part numbers are listed?

3 onsemi onsemi BC81 Series part numbers are listed, each with specifications and a datasheet where available.

onsemi BC81 Series

3 variants · onsemi

About the onsemi onsemi BC81 Series series

The onsemi onsemi BC81 Series series groups 3 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common current - collector (Ic) of 500 mA, current - collector cutoff of 100nA (ICBO) and frequency of 100MHz. Variants differ by case, DC current gain (hFE) (Min) @ ic, vce and operating temperature, so you can match the exact case your application requires using the selection guide below. All listed onsemi BC81 Series part numbers are active and orderable.

Select a variant by

Case: SC-70, SOT-323 · TO-236-3, SC-59, SOT-23-3
DC current gain (hFE) (Min) @ ic, vce: 100 @ 100mA, 1V · 250 @ 100mA, 1V
Operating temperature: -65°C ~ 150°C (TJ) · -55°C ~ 150°C (TJ)
Power - max: 300 mW · 460 mW

Variant comparison

Parameter	BC817-16LT1G	BC817-40LT1G	BC817-40WT1G
Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	SC-70, SOT-323
DC current gain (hFE) (Min) @ ic, vce	100 @ 100mA, 1V	250 @ 100mA, 1V	250 @ 100mA, 1V
Operating temperature	-65°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Power - max	300 mW	300 mW	460 mW

Shared specifications

Current - collector (Ic): 500 mA
Current - collector cutoff: 100nA (ICBO)
Frequency: 100MHz
Mounting type: Surface Mount
Package: Tape & Reel (TR) Cut Tape (CT)
Transistor type: NPN
Vce saturation (Max) @ ib, ic: 700mV @ 50mA, 500mA
Voltage - collector emitter breakdown: 45 V

Request a quote on any onsemi BC81 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

Frequently asked questions

How do the onsemi onsemi BC81 Series variants differ?: onsemi BC81 Series part numbers differ by case, DC current gain (hFE) (Min) @ ic, vce, operating temperature and power - max. Use the selection guide above to pick by case.
How many onsemi onsemi BC81 Series part numbers are listed?: 3 onsemi onsemi BC81 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for onsemi onsemi BC81 Series?: Request a quote (RFQ) for any onsemi BC81 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.