AO3401A

LCSC lists the AO3401A with the following volume pricing: 10+ pcs at $0.0589, 100+ at $0.0474, 300+ at $0.0415, 3,000+ at $0.0366, 6,000+ at $0.0349, and 9,000+ at $0.0338 per piece. The minimum order quantity is 10 pieces and the standard reel packaging is 3,000 pieces. With 1,831,820 units available for immediate shipment, supply continuity is strong. AOS is a well-established fabless semiconductor supplier, making the AO3401A a reliable and cost-competitive choice for P-channel load-switch applications in consumer, industrial, and IoT product designs.

The AO3401A is rated for 4A continuous drain current, but this figure is measured under specific thermal conditions. The SOT-23 package has a limited thermal dissipation capability compared to larger packages such as DPAK or SOT-223. In practice, the actual usable current depends on the Rds(on) at the operating Vgs, the ambient temperature, and the available PCB copper area for heat spreading. The ECCN classification is EAR99 and the CNHTS code is 8541290000, confirming its classification as a discrete semiconductor. In-stock quantity is 1,831,820 units at LCSC, confirming excellent supply availability for production.

The AO3401A is a P-channel device, so the gate must be driven below the source by at least the gate threshold voltage to turn on. As a SOT-23 P-channel MOSFET rated at 30V / 4A, the AO3401A is designed for operation in circuits where the source is tied to the positive supply rail. For logic-level drive from a 3.3V or 5V microcontroller, a proper high-side switching topology using an N-channel driver or level-shift circuit is typically required, since a P-channel MOSFET's gate must be pulled low relative to its source. Consult the AO3401A datasheet directly for specific Vgs(th) and Rds(on) values.

Yes. The AO3401A uses the industry-standard SOT-23 (SC-59) 3-pin package with a Gate–Source–Drain pinout common across the P-channel SOT-23 MOSFET family. It is functionally compatible with many industry equivalents such as the PMV65XP (Nexperia) and SI2301DS (Vishay), provided the specific Vgs threshold, Rds(on), and Id ratings in the AO3401A datasheet are verified against the application's requirements. The standard packaging is 3,000 pieces per full reel, with a minimum order of 10 pieces, making it accessible for both prototype and volume production use. It is fully RoHS compliant.

The AO3401A is a P-channel MOSFET from Alpha and Omega Semiconductor (AOS), rated at Vds = -30V (drain-source voltage) and Id = -4A (continuous drain current), housed in a SOT-23 package for surface-mount assembly. It is described as a 30V 4A surface-mount device. The SOT-23 footprint keeps the component highly compact, making the AO3401A well-suited for high-side switching in load switches, USB power management, battery protection circuits, portable consumer electronics, and reverse polarity protection applications where a P-channel device driven by a microcontroller GPIO or N-channel gate driver is required.