STMicroelectronics Z0410MB

Overview

Z0410MB from STMicroelectronics is a 4 A, 600 V repetitive peak off-state voltage (VDRM/VRRM), 4-quadrant triac in DPAK package, designed for AC load switching in home appliances, power tools, and industrial actuators. It features 25 mA gate trigger current (IGT), 125 °C maximum junction temperature, and 750 V non-repetitive peak voltage (VDSM/VRSM).

For engineers reviewing the Z0410MB datasheet, Z0410MB pinout, Z0410MB application, or Z0410MB equivalent, key selection criteria include RMS on-state current rating, dV/dt immunity (≥200 V/µs), thermal resistance (Rth(j-c) = 3 °C/W), and gate drive compatibility with standard microcontroller GPIOs.

Technical Context

The Z0410MB operates as a bidirectional AC switch with full 4-quadrant triggering capability, enabling gate control regardless of polarity between MT1 and MT2. Its 25 mA IGT and 1.3 V VGT ensure reliable turn-on with low-power drivers, while 200 V/µs dV/dt immunity prevents false triggering in noisy industrial environments.

Thermal design is supported by a low junction-to-case thermal resistance of 3 °C/W and a maximum Tj of 125 °C, allowing sustained 4 A RMS conduction at case temperatures up to 107 °C. The device uses halogen-free, lead-free ECOPACK2-compliant packaging for environmental compliance.

Key Specifications

Pinout & Package

DPAK (TO-252) surface-mount package with exposed thermal pad; dimensions per DS14021 Rev 1: 6.10 mm × 6.60 mm × 2.30 mm (L × W × H); recommended footprint includes 5.4 mm × 4.85 mm copper area under tab for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BT134-600D and MAC4DH10G, the Z0410MB delivers superior thermal performance (Rth(j-c) = 3 °C/W), full SMT manufacturability, and stricter environmental compliance-making it optimal for modern, compact, and thermally constrained AC control designs.

Availability

Z0410MB is available at Aetrix Electronics and suitable for home appliance motor control, industrial heating element switching, and inrush current limiting circuits requiring stable component supply and long-term production continuity.

Supply support for Z0410MB 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, specializing in power management, analog, MEMS, and microcontrollers.

The Z0410MB belongs to ST's high-reliability triac product line, engineered specifically for robust AC switching in cost-sensitive, thermally demanding consumer and industrial equipment.

FAQ

What is the maximum RMS load current the Z0410MB can switch continuously?

The Z0410MB is rated for 4 A RMS on-state current at a case temperature (Tc) of 107 °C. Derating is required above this temperature: at Tc = 80 °C, it supports ~5.2 A RMS; at Tc = 25 °C, ~6.5 A RMS. Actual usable current depends on PCB copper area, airflow, and ambient temperature.

Can the Z0410MB be driven directly by a 3.3 V microcontroller GPIO?

Yes - with appropriate series resistance. At 25 °C, VGT is ≤1.3 V and IGT is ≤25 mA. A 3.3 V GPIO driving through a 100 Ω resistor delivers ~20 mA into the gate, satisfying trigger requirements. For reliability across temperature, use 68–82 Ω and verify with worst-case VGT (1.3 V) and minimum GPIO voltage (e.g., 3.0 V).

Does the Z0410MB require a snubber circuit in typical resistive load applications?

No snubber is required for purely resistive loads like heaters. However, for inductive loads (e.g., universal motors), a RC snubber (e.g., 100 Ω + 100 nF) is recommended to suppress voltage transients exceeding 750 V VRSM and prevent false triggering due to dV/dt stress during turn-off.

How does the DPAK package of Z0410MB compare thermally to TO-220 triacs?

The DPAK package achieves Rth(j-c) = 3 °C/W - comparable to many TO-220 devices - but with significantly lower Rth(j-a) when mounted on ≥5 cm² copper. Unlike TO-220, DPAK eliminates mounting hardware and enables reflow soldering, reducing assembly cost and improving thermal interface consistency in high-volume SMT production.