Comparison page

A4988 vs AO3400

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

A4988

Projects needing Stepper and 3D printer with a commonly available power part.

AO3400

Projects needing MOSFET and Switching with a commonly available power part.

Specification Matrix

DimensionA4988 AO3400

CategoryPowerPower

MakerAllegro MicroSystemsAlpha & Omega Semiconductor

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoNeeds verification

Price$1.00 - $4.00$0.03 - $0.20

Known Tradeoffs

A4988

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

AO3400

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

A4988

Allegro MicroSystems

Common stepper motor driver used in older 3D printer and CNC control boards.

China-madePower86% confidence

AO3400

Alpha & Omega Semiconductor

Small N-channel MOSFET used for switching loads in low-voltage maker circuits.

China-madePower76% confidence