STMicroelectronics Z0107MA 1AA2

Overview

Z0107MA from STMicroelectronics is a 5 mA sensitivity, 600 V repetitive peak off-state voltage (VDRM/VRRM), 1 A RMS on-state current triac in TO-92 package, designed for AC phase-control switching in low-power home appliance loads including electrovalves, small lamp dimmers, and fan speed controllers.

For engineers reviewing the Z0107MA datasheet, Z0107MA pinout, Z0107MA application, or Z0107MA equivalent, this device supports direct microcontroller gate drive with guaranteed IGT ≤ 5 mA at 25 °C, offers dV/dt immunity ≥ 20 V/µs at 110 °C, and maintains latching current ≤ 15 mA across –40 to +125 °C junction temperature range.

Technical Context

This triac operates in all four quadrants (I–IV) with gate-triggered turn-on and commutation-controlled turn-off, supporting bidirectional AC conduction without external polarity management. Its static dV/dt immunity (≥20 V/µs) and critical rate of decrease of main current (dI/dt)c (≥1 V/µs) are specified under high-temperature stress (Tj = 110 °C), ensuring robust noise immunity in noisy appliance environments.

The device uses standard silicon-based thyristor structure with planar passivated junctions and features low on-state voltage (VT ≤ 1.60 V at 25 °C, ≤ 0.95 V at 125 °C) and dynamic resistance (Rd ≤ 400 mΩ), enabling efficient power delivery at 1 A RMS with minimal thermal rise in TO-92 package (Rth(j-l) = 60 °C/W).

Key Specifications

Pinout & Package

Package: TO-92 (straight leads), plastic, lead-free, UL94 V0 compliant, 0.2 g unit weight, 2500 pcs bulk packaging (1AA2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with Z0107NA, Z0107MA trades blocking voltage headroom for tighter gate sensitivity and lower cost; versus BT134-600, it delivers superior noise immunity and lower drive burden-critical for compact, microcontroller-driven appliance designs.

Availability

Z0107MA is available at Aetrix Electronics and suitable for home appliance control, AC motor actuation, and low-power lighting systems requiring stable component supply across multi-year production cycles.

Supply support for Z0107MA 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.

The Z01 series belongs to ST's general-purpose power discrete portfolio, engineered specifically for cost-sensitive, space-constrained AC switching in Class I/II household appliances with emphasis on gate drive simplicity and thermal reliability.

FAQ

What is the maximum junction temperature for continuous operation?

The Z0107MA has an operating junction temperature range of –40 to +125 °C. Continuous operation at 125 °C requires adherence to the derated IT(RMS) limit shown in Figure 2 (0.65 A at Tlead = 50 °C), and thermal design must ensure Rth(j-l) × Pdiss ≤ 75 °C margin below 125 °C.

Can Z0107MA be driven directly by a 3.3 V microcontroller GPIO?

Yes - with IGT ≤ 5 mA max at 25 °C and VGT ≤ 1.3 V, a 3.3 V GPIO sourcing ≥6 mA through a 470 Ω series resistor meets worst-case trigger requirements. Gate dissipation remains within PG(AV) = 1 W limit due to pulsed operation (tp < 100 µs typical).

Is snubber circuitry required for inductive loads?

Snubbers are recommended for inductive loads exceeding 100 mH (e.g., pump windings) to suppress dV/dt transients above 20 V/µs. The device's (dV/dt)c ≥ 0.5 V/µs at 110 °C provides basic commutation robustness, but external RC snubbers improve long-term reliability per IEC 61000-4-4 testing.

How does thermal performance differ between TO-92 and SOT-223 packages?

TO-92 (Z0107MA) has Rth(j-l) = 60 °C/W, limiting continuous IT(RMS) to ~0.65 A at 50 °C lead temperature; SOT-223 (Z0107MN) achieves Rth(j-t) = 25 °C/W, enabling 1 A RMS at 90 °C tab temperature. Layout copper area significantly impacts TO-92 ambient performance (see Figure 3).