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Product Detailed Parameters
- Description：MOSFET P-CH 20V 5A SOT23-3
- Series：-
- Mfr：Alpha & Omega Semiconductor Inc.
- Package：Tape & Reel (TR)
- FET Type：P-Channel
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：20 V
- Current - Continuous Drain (Id) @ 25°C：5A (Ta)
- Drive Voltage (Max Rds On, Min Rds On)：1.5V, 4.5V
- Rds On (Max) @ Id, Vgs：41mOhm @ 4A, 4.5V
- Vgs(th) (Max) @ Id：900mV @ 250µA
- Gate Charge (Qg) (Max) @ Vgs：20 nC @ 4.5 V
- Vgs (Max)：±8V
- Input Capacitance (Ciss) (Max) @ Vds：751 pF @ 10 V
- FET Feature：-
- Power Dissipation (Max)：1.5W (Ta)
- Operating Temperature：-55°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-23-3
- Package / Case：3-SMD, SOT-23-3 Variant
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Overview
The AO3495 is a P-channel power MOSFET manufactured by Alpha & Omega Semiconductor. It features a 20V drain-source voltage rating and a continuous drain current of 5A. The device utilizes a SOT-23-3 surface-mount package, offering a compact footprint for space-constrained designs. Key electrical characteristics include a maximum on-resistance (Rds(on)) of 41mΩ at a gate-source voltage of 4.5V with a drain current of 4A. The component is designed for efficient switching applications requiring low conduction losses within its specified voltage and current limits.
Feature Summary
- P-channel configuration optimized for low-side or high-side switching topologies
- Low on-resistance characteristic to minimize conduction losses during operation
- Compact SOT-23-3 package design suitable for automated surface-mount assembly
Applications
- Battery protection circuits in portable electronic devices
- Load switching applications in consumer electronics
- Power management systems requiring P-channel control
Procurement Notes
Verify the specific datasheet revision and ordering suffixes directly with Alpha & Omega Semiconductor or authorized distributors before procurement. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing standards. Ensure that the supply chain sources are legitimate to avoid counterfeit parts, as this component may be obsolete or superseded by newer alternatives.
Selection Notes
Select the AO3495 when a 20V P-channel MOSFET with a 5A current rating is required in a small SOT-23-3 package. Note that performance degrades significantly below a 4.5V gate-source voltage; therefore, ensure the driving circuit provides sufficient voltage headroom to maintain low on-resistance. Consider thermal dissipation capabilities inherent to the SOT-23 package for the expected load currents.
Part Context
Alpha & Omega Semiconductor produces a broad portfolio of power semiconductors, including various P-channel MOSFETs. The AO3495 belongs to the series of devices utilizing advanced silicon processes to achieve competitive on-resistance values. It serves as a standard solution for general-purpose switching tasks where moderate voltage and current ratings are sufficient within a minimal physical footprint.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official manufacturer cross-reference guides or contact Alpha & Omega Semiconductor directly for verified replacement options.
