STMicroelectronics Z0110MA 2AL2

Overview

Z0110MA from STMicroelectronics is a 1 A, 600 V RMS-rated triac in TO-92 package, designed for AC phase-control switching in low-power mains-connected loads. It features 25 mA maximum gate trigger current (IGT), 1.6 V max on-state voltage (VT), and 400 mΩ dynamic resistance - enabling direct microcontroller drive with minimal external buffering in home appliance motor and lamp control circuits.

For engineers reviewing the Z0110MA datasheet, Z0110MA pinout, Z0110MA application, or Z0110MA equivalent, this part supports reliable zero-crossing–compatible AC switching in space-constrained, thermally limited designs where gate sensitivity, thermal resistance (Rth(j-l) = 60 °C/W), and dV/dt immunity (≥100 V/µs at 110 °C) are critical selection criteria.

Technical Context

This triac operates in all four quadrants with symmetrical triggering behavior, supporting bidirectional conduction without polarity constraints on A2 relative to A1. Its latching current (IL) ≤25 mA and holding current (IH) ≤25 mA ensure stable turn-on and sustained conduction under varying load conditions.

Designed for full-cycle sinusoidal AC waveforms, it sustains repetitive peak off-state voltages up to 600 V (VDRM/VRRM), withstands non-repetitive surge currents of 8 A (50 Hz, 20 ms), and maintains dI/dt capability ≥5 V/µs (critical rate of rise of off-state voltage) at elevated junction temperatures up to +125 °C.

Key Specifications

Pinout & Package

Package: TO-92 (straight leads), plastic, lead-free, halogen-free, UL94 V0 compliant. Tab is not electrically connected; case is electrically isolated.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac-based AC switching applications.

Compared with BT134-600E, Z0110MA offers smaller footprint and lower gate drive burden but sacrifices surge capacity and thermal headroom; compared with Z0107MA, it trades higher gate sensitivity for reduced noise margin - making it optimal for cost-sensitive, space-constrained microcontroller-driven appliances.

Availability

Z0110MA is available at Aetrix Electronics and suitable for home appliance motor control, smart lamp dimming, electrovalve actuation, and fan speed regulation requiring stable component supply and long-term industrial availability.

Supply support for Z0110MA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.

Z01 series triacs belong to ST's general-purpose power switching product line, engineered specifically for cost-effective, reliable AC load control in white goods and building automation systems where gate sensitivity, thermal efficiency, and regulatory compliance are essential.

FAQ

What is the maximum junction temperature for continuous operation of Z0110MA?

The Z0110MA has an operating junction temperature range of −40 to +125 °C. For continuous 1 A RMS operation in TO-92 package, lead temperature must be maintained ≤50 °C per Table 1, corresponding to a maximum practical junction temperature of approximately 110 °C under typical PCB copper area conditions.

Can Z0110MA be used without a heat sink in a 230 VAC fan controller?

Yes - the Z0110MA's Rth(j-l) = 60 °C/W and 1 A RMS rating allow operation without external heatsinking when mounted on standard FR-4 PCB with ≥1 cm² copper pour per lead, provided ambient temperature remains ≤40 °C and airflow is moderate. Derating is required above 50 °C ambient.

Does Z0110MA support snubberless operation?

Z0110MA supports snubberless operation in resistive and lightly inductive loads due to its guaranteed dV/dt immunity of ≥100 V/µs at 110 °C. However, for highly inductive loads (e.g., large motors), a small RC snubber (e.g., 100 Ω + 100 nF) is recommended to suppress voltage overshoot during commutation.

How does the 25 mA IGT rating affect microcontroller interface design?

The 25 mA maximum IGT means the microcontroller GPIO must source ≥25 mA at ≥1.3 V (VGT max) for guaranteed turn-on. Most 3.3 V/5 V MCUs meet this directly (e.g., STM32 GPIO: 25 mA sink/source). No external transistor is needed, but a 100 Ω series gate resistor is recommended to limit peak IGM (1 A) and damp ringing.