AO3400

AO3400 Overview

AO3400 is a Alpha & Omega Semiconductor 30 V N-channel enhancement-mode MOSFET supplied in 3-lead SOT-23. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.

Key Technical Specifications

Package and Ordering Notes

The listed package is 3-lead SOT-23 with 3 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.

Sourcing Guidance

AO3400 is a legacy or obsolete orderable code. Source only with date-code, label, package and traceability checks appropriate to the application.

For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.

Manufacturer Documentation

Technical values were checked against Alpha & Omega Semiconductor documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.

AO3400 selection and design context

AO3400 is cataloged as a Power MOSFET in the AO3400 family. Its recorded function is 30 V N-channel enhancement-mode MOSFET. Selection should be based on the complete electrical limits, package drawing and ordering suffix rather than the abbreviated family code.

• Drain-Source Voltage: 30 V. Check rail compatibility, tolerance and sequencing under worst-case conditions.
• Drain Current: 5.8 A. Check steady-state, transient and thermal margin in the intended operating mode.
• RDS(on) at 10 V: 28 mΩ max. Confirm the value and its datasheet test conditions for the exact ordering suffix.
• RDS(on) at 4.5 V: 33 mΩ max. Confirm the value and its datasheet test conditions for the exact ordering suffix.

Application and qualification considerations

When evaluating this switching device, confirm voltage and current margin, gate-drive conditions, on-state loss, switching energy, thermal impedance and safe operating area. For a new design, review power-up behavior, interface timing, absolute maximum ratings, thermal limits and any external-component requirements in the latest manufacturer documentation. Existing-board replacement work should additionally confirm pinout, footprint, firmware assumptions and qualification grade.

Procurement checks for AO3400

The recorded package is 3-lead SOT-23, the temperature range is -55°C to +150°C junction, and the lifecycle status is Obsolete as of 2026-07-18. Before ordering, confirm the exact MPN on the label, packing format, quantity, date-code requirements, traceability documents and current factory status.

AO3400 FAQ

How AO3400 differs from related orderable parts

AO3400 belongs to the AO3400 family. Compared with AON7401, the recorded differences include functional description: 30 V N-channel enhancement-mode MOSFET versus -30 V P-channel enhancement-mode power MOSFET; package: 3-lead SOT-23 versus 8-lead DFN 3 mm × 3 mm; pin/contact count: 3 pins, leads or contacts versus 8 pins, leads or contacts; Drain-Source Voltage: 30 V, a higher recorded value than -30 V; Drain Current: 5.8 A, a higher recorded value than -35 A; and Polarity: N-channel rather than P-channel. A shared family name does not establish pin, firmware or qualification compatibility.

For an RFQ or AVL review, quote the complete AO3400 code and verify the manufacturer ordering table, package drawing, packing method and revision. The related numbers above are comparison references, not declared drop-in replacements.

Exact order-code identity for AO3400

For BOM, label, AVL and RFQ matching, preserve these visible code segments: opening alphabetic sequence AO and terminal numeric sequence three four zero zero. The nearest published comparison codes are AON7401; AO4413; and AON6992. Compare every segment because a changed character can identify a different density, voltage, package, temperature, qualification or packing option.

Do not shorten the requested code to AO3400 or remove its terminal characters. Ask the supplier to reproduce the complete code on the quotation and provide label or traceability evidence when exact suffix matching is mandatory.