Alpha & Omega Semiconductor Inc. AO44 Series

4 variants · Alpha & Omega Semiconductor Inc.

About the Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO44 Series series

The Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO44 Series series groups 4 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common case of 8-SOIC (0.154\", 3.90mm Width), drive voltage (Max rds on, min rds on) of 4.5V, 10V and mounting type of Surface Mount. Variants differ by current - continuous drain (Id) @ 25°C, drain to source voltage and FET type, 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: 6.2A (Ta) · 10A (Ta)
Drain to source voltage: 40 V · 60 V
FET type: N-Channel · P-Channel
Gate charge (Qg) (Max) @ vgs: 37 nC @ 10 V · 55 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds: 1950 pF @ 20 V · 2900 pF @ 30 V · 3000 pF @ 20 V
Power dissipation: 1.7W (Ta) · 3.1W (Ta)
Rds on (Max) @ id, vgs: 10mOhm @ 10A, 10V · 15mOhm @ 10A, 10V · 40mOhm @ 6.2A, 10V
Vgs(th) (Max) @ id: 2.5V @ 250µA · 3V @ 250µA

Variant comparison

Parameter	AO4421	AO4484	AO4485
Current - continuous drain (Id) @ 25°C	6.2A (Ta)	10A (Ta)	10A (Ta)
Drain to source voltage	60 V	40 V	40 V
FET type	P-Channel	N-Channel	P-Channel
Gate charge (Qg) (Max) @ vgs	55 nC @ 10 V	37 nC @ 10 V	55 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds	2900 pF @ 30 V	1950 pF @ 20 V	3000 pF @ 20 V
Power dissipation	3.1W (Ta)	1.7W (Ta)	1.7W (Ta)
Rds on (Max) @ id, vgs	40mOhm @ 6.2A, 10V	10mOhm @ 10A, 10V	15mOhm @ 10A, 10V
Vgs(th) (Max) @ id	3V @ 250µA	3V @ 250µA	2.5V @ 250µA

Shared specifications

Case: 8-SOIC (0.154\", 3.90mm Width)
Drive voltage (Max rds on, min rds on): 4.5V, 10V
Mounting type: Surface Mount
Operating temperature: -55°C ~ 150°C (TJ)
Package: Tape & Reel (TR); Cut Tape (CT)
Technology: MOSFET (Metal Oxide)
Vgs: ±20V

Request a quote on any Alpha & Omega Semiconductor Inc. AO44 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. AO44 Series variants differ?: Alpha & Omega Semiconductor Inc. AO44 Series part numbers differ by current - continuous drain (Id) @ 25°C, drain to source voltage, FET type and gate charge (Qg) (Max) @ vgs. Use the selection guide above to pick by current - continuous drain (Id) @ 25°C.
How many Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO44 Series part numbers are listed?: 4 Alpha & Omega Semiconductor Inc. Alpha & Omega Semiconductor Inc. AO44 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. AO44 Series?: Request a quote (RFQ) for any Alpha & Omega Semiconductor Inc. AO44 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.