How do the onsemi onsemi SMMBT Series variants differ?

onsemi SMMBT Series part numbers differ by case, current - collector (Ic), DC current gain (hFE) (Min) @ ic, vce and frequency. Use the selection guide above to pick by case.

How many onsemi onsemi SMMBT Series part numbers are listed?

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

onsemi SMMBT Series

20 variants · onsemi

About the onsemi onsemi SMMBT Series series

The onsemi onsemi SMMBT Series series groups 20 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common mounting type of Surface Mount, operating temperature of -55°C ~ 150°C (TJ) and package of Tape & Reel (TR); Cut Tape (CT). Variants differ by case, current - collector (Ic) and DC current gain (hFE) (Min) @ ic, vce, so you can match the exact case your application requires using the selection guide below.

Select a variant by

Case: SC-70, SOT-323 · SC-75, SOT-416 · TO-236-3, SC-59, SOT-23-3
Current - collector (Ic): 200 mA · 500 mA · 600 mA
DC current gain (hFE) (Min) @ ic, vce: 25 @ 30mA, 10V · 100 @ 10mA, 1V · 100 @ 150mA, 1V · 100 @ 150mA, 10V
Frequency: 50MHz · 250MHz · 300MHz
Power - max: 150 mW · 300 mW
Transistor type: NPN · PNP
Vce saturation (Max) @ ib, ic: 1V @ 50mA, 500mA · 300mV @ 5mA, 50mA · 400mV @ 5mA, 50mA · 500mV @ 2mA, 20mA · 750mV @ 50mA, 500mA
Voltage - collector emitter breakdown: 40 V · 300 V

Variant comparison

Parameter	SMMBT2222ALT3G	SMMBT3904LT1G	SMMBT3904LT3G	SMMBT3904TT1G	SMMBT3906WT1G	SMMBT4401LT1G
Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	SC-75, SOT-416	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3
Current - collector (Ic)	600 mA	200 mA	200 mA	200 mA	200 mA	600 mA
DC current gain (hFE) (Min) @ ic, vce	100 @ 150mA, 10V	100 @ 10mA, 1V	100 @ 10mA, 1V	100 @ 10mA, 1V	100 @ 10mA, 1V	100 @ 150mA, 1V
Frequency	300MHz	300MHz	300MHz	300MHz	250MHz	250MHz
Power - max	300 mW	300 mW	300 mW	300 mW	150 mW	300 mW
Transistor type	NPN	NPN	NPN	NPN	PNP	NPN
Vce saturation (Max) @ ib, ic	1V @ 50mA, 500mA	300mV @ 5mA, 50mA	300mV @ 5mA, 50mA	300mV @ 5mA, 50mA	400mV @ 5mA, 50mA	750mV @ 50mA, 500mA
Voltage - collector emitter breakdown	40 V	40 V	40 V	40 V	40 V	40 V

Shared specifications

Mounting type: Surface Mount
Operating temperature: -55°C ~ 150°C (TJ)
Package: Tape & Reel (TR); Cut Tape (CT)

Request a quote on any onsemi SMMBT 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 SMMBT Series variants differ?: onsemi SMMBT Series part numbers differ by case, current - collector (Ic), DC current gain (hFE) (Min) @ ic, vce and frequency. Use the selection guide above to pick by case.
How many onsemi onsemi SMMBT Series part numbers are listed?: 20 onsemi onsemi SMMBT Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for onsemi onsemi SMMBT Series?: Request a quote (RFQ) for any onsemi SMMBT Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.