Mfr Part #:

AO3420L

N-Channel MOSFET with 20V drain-source voltage rating and 6A continuous drain current. Packaged in SOT23-3 with low on-resistance down to 24 mΩ at 10V gate drive.

✓ Total Stock: 3,000 pcs

AO3420L Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Rayichip ✓ Non-Authorised Inventory information	3,000 pcs On Request	3000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

AO3420L Description

Short technical summary and product information.

The AO3420L is an N-Channel enhancement-mode MOSFET from Alpha & Omega Semiconductor. It utilizes advanced trench technology to achieve low on-resistance and low gate charge, while supporting gate drive voltages as low as 1.8V. The device is rated for a maximum drain-source voltage of 20V and a continuous drain current of 6A at 25°C ambient (5A at 70°C). Its pulsed drain current capability reaches 30A.

The static drain-source on-resistance is specified at multiple gate voltages: 24 mΩ max at 10V (16 mΩ typical), 27 mΩ at 4.5V, 42 mΩ at 2.5V, and 55 mΩ at 1.8V. The gate threshold voltage ranges from 0.4V to 1.1V, making the device suitable for logic-level drive. Typical forward transconductance is 25 S at VDS=5V and ID=6A.

The AO3420L is housed in a standard SOT23-3 surface-mount package, offering a compact footprint for space-constrained designs. This device is designed for unidirectional or bidirectional load switch applications, as well as general-purpose low-voltage switching. Maximum junction temperature range is -55°C to +150°C.

AO3420L Quick Information

Product Type: MOSFET

Canonical Name: AO3420L N-Channel MOSFET

Subcategory: N-Channel MOSFET

AO3420L Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1

REACH Status: Compliant

Lead Free: Yes

AO3420L Features

20V maximum drain-source voltage rating.
6A continuous drain current capability.
Low on-resistance: 24 mΩ at 10V gate drive.
Compatible with 1.8V logic-level gate drive.
SOT23-3 surface-mount package.

AO3420L Applications

Ideal for unidirectional load switching.
Suitable for bidirectional load switches.
Used in low-voltage DC/DC converters.
Power management in portable devices.

AO3420L FAQs

7 frequently asked questions generated from this part’s specifications.

What is the maximum drain-source voltage of the AO3420L?

20 V.

What is the continuous drain current rating?

6 A at 25°C ambient; 5 A at 70°C.

What is the typical gate threshold voltage?

0.75 V, with a range of 0.4 V to 1.1 V at ID=250 µA.

What are the on-resistance values at different gate voltages?

Typical 16 mΩ at 10V, 18 mΩ at 4.5V, 23 mΩ at 2.5V, 31 mΩ at 1.8V. Maximum values: 24 mΩ, 27 mΩ, 42 mΩ, 55 mΩ respectively.

What is the package type?

SOT23-3 (3-lead SOT23).

What is the operating junction temperature range?

-55°C to +150°C.

Is the device suitable for low voltage gate drive?

Yes, it can be driven with gate voltages as low as 1.8V.

Category	Transistors - FETs, MOSFETs - Single
Manufacturer Name	Alpha&Omega Semicondu Ctor
Current	6 A
Drain to Source Voltage (Vdss)	20 V
Drive Voltage (Max Rds On, Min Rds On)	1.8V, 10V
FET Type	N-Channel
Gate Charge (Qg) (Max) @ Vgs	12.5 nC @ 10 V
Input Capacitance (Ciss) (Max) @ Vds	630 pF @ 10 V
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Power Dissipation (Max)	1.4W (Ta)
Rds On (Max) @ Id, Vgs	16 mΩ / 24 mΩ
Storage Temperature	-55°C ~ 150°C
Supplier Device Package	SOT-23-3
Tape & Reel	Yes
Technology	MOSFET (Metal Oxide)
Vgs (Max)	±12 V
Vgs(th) (Max) @ Id	0.4 V / 0.75 V / 1.1 V