Comparison page

IRLZ44N vs ULN2003

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.

IRLZ44N

Projects needing MOSFET and Logic-level with a commonly available power part.

ULN2003

Projects needing Driver array and Stepper kit with a commonly available power part.

Specification Matrix

DimensionIRLZ44N ULN2003

CategoryPowerPower

MakerInfineonTexas Instruments

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino

Price$0.50 - $2.00$0.10 - $0.60

Known Tradeoffs

IRLZ44N

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

ULN2003

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

Open Individual Model Pages

IRLZ44N

Infineon

Logic-level N-channel MOSFET used in LED strip, motor, and load switching projects.

China-madePower78% confidence

ULN2003

Texas Instruments

Darlington transistor array often sold with 28BYJ-48 stepper motor kits.

China-madePower82% confidence