Alpha & Omega Semiconductor Inc.TO-251-3 Stub Leads, IPakRoHS
AOI538
MOSFET N-CH 30V 34A/70A TO251A
Category
Subcategory
Transistors Fets Mosfets Single
Package
TO-251-3 Stub Leads, IPak
Series
AlphaMOS
Status
Active
$0.36 / unit (market reference)
MOQ: 3500 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Alpha & Omega Semiconductor Inc. |
| Model | AOI538 |
| Package / Case | TO-251-3 Stub Leads, IPak |
| Mounting Type | Through Hole |
| Operating Temperature | -55°C ~ 175°C (TJ) |
| FET Type | N-Channel |
| Drain to Source Voltage (Vdss) | 30 V |
| Rds On (Max) | 3.1mOhm @ 20A, 10V |
| Vgs(th) (Max) | 2.2V @ 250µA |
| Gate Charge (Qg) | 42 nC @ 10 V |
| Input Capacitance (Ciss) | 2160 pF @ 15 V |
| Power Dissipation (Max) | 4.2W (Ta), 24W (Tc) |
| Drive Voltage | 4.5V, 10V |
| Supplier Device Package | TO-251A |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
AOI538 by Alpha & Omega Semiconductor Inc. is an N-channel power MOSFET rated at 30 V / N/A, commonly used in DC-DC converters, motor drivers, power supplies, and battery protection circuits. The TO-251-3 Stub Leads, IPak package offers good thermal performance for SMT mounting. Key spec: Rds(on) max 3.1mOhm @ 20A, 10V. Select gate driver voltage carefully — logic-level variants exist for direct MCU drive.
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All Technical Specifications
| FET Type | N-Channel |
| Vgs (Max) | ±20V |
| Technology | MOSFET (Metal Oxide) |
| Vgs(th) (Max) @ Id | 2.2V @ 250µA |
| Rds On (Max) @ Id, Vgs | 3.1mOhm @ 20A, 10V |
| Power Dissipation (Max) | 4.2W (Ta), 24W (Tc) |
| Gate Charge (Qg) (Max) @ Vgs | 42 nC @ 10 V |
| Drain to Source Voltage (Vdss) | 30 V |
| Input Capacitance (Ciss) (Max) @ Vds | 2160 pF @ 15 V |
| Drive Voltage (Max Rds On, Min Rds On) | 4.5V, 10V |
| Current - Continuous Drain (Id) @ 25°C | 34A (Ta), 70A (Tc) |
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