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Z0103MN 5AA4

Z0103MN 5AA4

STMicroelectronics
TRIAC Logic - Sensitive Gate 600 V 1 A Surface Mount SOT-223
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Overview

The Z0103MN 5AA4 is a logic-level TRIAC designed for AC switching applications where space and sensitivity are critical. It features a sensitive gate current of 3 mA, allowing it to be driven directly by microcontrollers or logic integrated circuits without additional amplification. This surface-mount SOT-223 device supports an off-state voltage of 600 V and a continuous current of 1 A.

Why Choose This Part

The primary advantage is the 3 mA maximum gate trigger current, which enables direct interfacing with 3.3V or 5V logic. The SOT-223 package offers a balance between compact footprint and thermal dissipation, supporting up to 1 A of current. Additionally, the 600 V rating provides sufficient margin for standard 110V and 240V AC mains applications.

Applications

Home Appliances
Control of small AC motors, valves, and solenoids in washing machines or dishwashers.
Fan Speed Controllers
Implementation of phase-cut dimming for ceiling fans or ventilation units.
Lighting Dimming
Management of low-power AC incandescent and LED lighting loads.
Solid State Relays
Compact AC switching in industrial control systems and automated test equipment.

Key Specifications

Triac Type Logic - Sensitive Gate
Configuration Single
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Voltage - Off State 600 V
Operating Temperature -40degC ~ 125degC (TJ)
Supplier Device Package SOT-223
Current - Hold (Ih) (Max) 7 mA
Current - Gate Trigger (Igt) (Max) 3 mA
Voltage - Gate Trigger (Vgt) (Max) 1.3 V
Current - On State (It (RMS)) (Max) 1 A
Current - Non Rep. Surge 50, 60Hz (Itsm) 8A, 8.5A

Getting Started

When designing with this TRIAC, ensure the gate resistor is sized to limit current while meeting the 3 mA trigger threshold across the operating temperature range. Use a snubber circuit (RC network) if switching highly inductive loads to prevent unintended triggering from high dV/dt. Thermal management is essential; provide adequate copper pour area on the PCB at the SOT-223 tab to maintain junction temperature below 125 degrees Celsius.