Alpha & Omega Semiconductor Inc. AO34 Series

3 variants · Alpha & Omega Semiconductor Inc.

About the Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO34 Series series

The Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO34 Series series groups 3 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common case of 3-SMD, SOT-23-3 Variant, mounting type of Surface Mount and operating temperature of -55°C ~ 150°C (TJ). Variants differ by current - continuous drain (Id) @ 25°C, drain to source voltage and drive voltage (Max rds on, min rds on), so you can match the exact current - continuous drain (Id) @ 25°C your application requires using the selection guide below.

Select a variant by

Current - continuous drain (Id) @ 25°C: 2.1A (Ta) · 3.5A (Ta)
Drain to source voltage: 20 V · 55 V
Drive voltage (Max rds on, min rds on): 1.8V, 10V · 2.5V, 4.5V
FET type: N-Channel · P-Channel
Gate charge (Qg) (Max) @ vgs: 3.3 nC @ 4.5 V · 4.4 nC @ 4.5 V
Input capacitance (Ciss) (Max) @ vds: 300 pF @ 25 V · 400 pF @ 10 V
Power dissipation: 1.25W (Ta) · 1.4W (Ta)
Rds on (Max) @ id, vgs: 85mOhm @ 3.5A, 10V · 160mOhm @ 2.1A, 4.5V

Variant comparison

Parameter	AO3419	AO3422
Current - continuous drain (Id) @ 25°C	3.5A (Ta)	2.1A (Ta)
Drain to source voltage	20 V	55 V
Drive voltage (Max rds on, min rds on)	1.8V, 10V	2.5V, 4.5V
FET type	P-Channel	N-Channel
Gate charge (Qg) (Max) @ vgs	4.4 nC @ 4.5 V	3.3 nC @ 4.5 V
Input capacitance (Ciss) (Max) @ vds	400 pF @ 10 V	300 pF @ 25 V
Power dissipation	1.4W (Ta)	1.25W (Ta)
Rds on (Max) @ id, vgs	85mOhm @ 3.5A, 10V	160mOhm @ 2.1A, 4.5V

Shared specifications

Case: 3-SMD, SOT-23-3 Variant
Mounting type: Surface Mount
Operating temperature: -55°C ~ 150°C (TJ)
Package: Tape & Reel (TR); Cut Tape (CT)
Technology: MOSFET (Metal Oxide)
Vgs: ±12V

Request a quote on any Alpha & Omega Semiconductor Inc. AO34 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 Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO34 Series variants differ?: Alpha & Omega Semiconductor Inc. AO34 Series part numbers differ by current - continuous drain (Id) @ 25°C, drain to source voltage, drive voltage (Max rds on, min rds on) and FET type. Use the selection guide above to pick by current - continuous drain (Id) @ 25°C.
How many Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO34 Series part numbers are listed?: 3 Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO34 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO34 Series?: Request a quote (RFQ) for any Alpha & Omega Semiconductor Inc. AO34 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.