STMicroelectronics Z0103MA 1AA2

Overview

Z0103MA 1AA2 from STMicroelectronics is a 600 V, 1 A standard-sensitivity triac in TO-92 package, rated for 3 mA gate trigger current (Q1 quadrant), with 7 mA latching current and 100 V/µs dV/dt immunity at 110 °C. It enables AC phase-control switching in low-power home appliance loads such as electrovalves, small lamps, and door locks.

For engineers reviewing the Z0103MA 1AA2 datasheet, Z0103MA 1AA2 pinout, Z0103MA 1AA2 application, or Z0103MA 1AA2 equivalent, key selection criteria include RMS on-state current derating vs. lead temperature, gate sensitivity matching to MCU GPIO drive capability, dV/dt robustness under noisy AC line conditions, and thermal resistance (R_th(j-l) = 60 °C/W) in TO-92 packaging.

Technical Context

This triac operates in all four quadrants with verified Q1–Q4 triggering behavior, supporting bidirectional AC conduction without external polarity management. Its gate trigger threshold (V_GT ≤ 1.3 V) and low I_GT (3 mA max) allow direct drive from 3.3 V or 5 V microcontroller outputs without buffer stages.

Static blocking performance is defined by V_DRM/V_RRM = 600 V and off-state leakage < 5 µA at 25 °C, while dynamic robustness includes critical dV/dt ≥ 100 V/µs (Q1/Q3) and (dV/dt)_c ≥ 5 V/µs at 110 °C - enabling reliable operation in inductive fan-speed control and pump motor circuits.

Key Specifications

Pinout & Package

Package: TO-92 (straight leads), plastic, lead-free, halogen-free, UL94 V0 compliant. Thermal resistance R_th(j-l) = 60 °C/W; lead temperature limited to 50 °C for full 1 A RMS rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Z0103NA 1AA2, this part trades higher voltage margin for identical gate drive and footprint; versus BT134-600E, it offers lower gate drive burden and smaller form factor but reduced current headroom and thermal capability.

Availability

Z0103MA 1AA2 is available at Aetrix Electronics and suitable for home appliance control, AC motor speed regulation, and low-power resistive load switching requiring stable component supply across long production lifecycles.

Supply support for Z0103MA 1AA2 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

Z01 series triacs belong to ST's general-purpose power switching product line, engineered specifically for cost-sensitive, low-to-medium power AC control in white goods and building automation systems.

FAQ

What is the maximum allowable lead temperature for continuous 1 A RMS operation?

The TO-92 package requires lead temperature (T_L) ≤ 50 °C to sustain 1 A RMS on-state current continuously. Exceeding this limit reduces current rating per Figure 2 in DS2116; at T_L = 60 °C, IT(RMS) drops to ~0.85 A. Thermal design must ensure adequate copper area and airflow around leads.

Can Z0103MA 1AA2 be triggered using a 3.3 V microcontroller GPIO without external components?

Yes - with V_GT ≤ 1.3 V and I_GT ≤ 3 mA, a 3.3 V GPIO can directly drive the gate through a 680 Ω series resistor (delivering ~4.4 mA at turn-on). No level shifter or transistor buffer is needed, provided the MCU output can sink ≥5 mA continuously for ≥10 µs.

How does dV/dt immunity change with junction temperature?

dV/dt immunity decreases as junction temperature rises: at 25 °C it exceeds 100 V/µs, dropping to ~50 V/µs at 110 °C (Figure 13). This reduction must be accounted for in thermally constrained designs; forced-air cooling or derating improves margin in high-ambient environments.

Is the Z0103MA 1AA2 RoHS-compliant and halogen-free?

Yes - the device uses lead-free plating and halogen-free molding compound, meeting RoHS Directive 2011/65/EU and JEDEC JS709B requirements. ECOPACK® status is confirmed in ST's official documentation (DS2116 Rev 14, Section 2).