STMicroelectronics Z0107MA 5AL2

Overview

Z0107MA from STMicroelectronics is a 5 mA sensitive, 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, pumps, and lamp dimmers. It features guaranteed gate trigger current ≤5 mA at 25 °C, latching current ≤15 mA, and dV/dt immunity ≥50 V/µs at 110 °C.

For engineers reviewing the Z0107MA datasheet, Z0107MA pinout, Z0107MA application, or Z0107MA equivalent, key selection considerations include gate sensitivity matching to microcontroller GPIO drive capability, thermal derating under lead-temperature constraints (TL ≤ 50 °C), and dV/dt robustness in noisy AC mains environments.

Technical Context

This triac operates in all four quadrants with symmetrical triggering behavior, enabling bidirectional AC conduction without external polarity management. Its gate structure supports direct drive from 3.3 V or 5 V microcontrollers when paired with appropriate series resistance (e.g., 1.2 kΩ for 5 V, 680 Ω for 3.3 V).

Thermal performance is defined by Rth(j–l) = 60 °C/W (junction-to-lead), requiring PCB layout attention to lead copper area for sustained 1 A RMS operation. The device meets IEC 61000-4-4 EFT immunity requirements when used with snubber networks due to its 50 V/µs dV/dt rating at 110 °C junction temperature.

Key Specifications

Pinout & Package

Package: TO-92 (straight leads), plastic body, 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 switching applications.

Compared with Z0107NA, Z0107MA offers lower cost and sufficient voltage margin for standard 120/230 VAC appliances; versus BT134-600E, it trades thermal headroom for compact size and direct MCU compatibility-ideal for space-constrained, low-power control modules.

Availability

Z0107MA is available at Aetrix Electronics and suitable for home appliance control, fan speed regulation, and electrovalve actuation requiring stable component supply across high-volume 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

Z01 series triacs are part of ST's general-purpose power switching portfolio, engineered specifically for cost-sensitive, low-to-medium power AC load control in white goods and building automation systems.

FAQ

What is the maximum junction temperature for continuous operation?

The Z0107MA has an operating junction temperature range of –40 °C to +125 °C. For continuous 1 A RMS operation in TO-92, lead temperature must be held ≤50 °C-achievable with ≥25 mm² copper area per lead and ambient ≤40 °C. Exceeding TL = 50 °C causes progressive IT(RMS) derating per Figure 2.

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

Yes-using a 680 Ω series resistor between GPIO and gate yields ~4.9 mA gate current at 3.3 V, safely within the ≤5 mA IGT(Q1) limit. Ensure GPIO can sink ≥5 mA and that gate is referenced to A1 (MT1), not ground, to maintain correct quadrant triggering.

Is a snubber circuit required for inductive loads like motors?

A snubber is recommended for inductive loads to suppress dV/dt transients exceeding 50 V/µs. A typical RC snubber (100 Ω + 100 nF) across MT1–MT2 limits voltage overshoot and prevents false triggering during motor commutation or sudden load disconnection.

How does Z0107MA differ from Z0103MA in practical design?

Z0107MA has higher gate sensitivity (5 mA max IGT vs. 3 mA for Z0103MA), offering greater noise margin and easier drive from weak GPIOs-but slightly reduced dV/dt immunity (50 V/µs vs. 100 V/µs). Use Z0107MA when drive strength is limiting; choose Z0103MA for noisier environments or higher reliability margins.