STMicroelectronics Z0410NF 1AA2

Overview

Z0410NF from STMicroelectronics is a 4 A, 800 V RMS TRIAC in TO-202-3 package, optimized for microcontroller-driven AC switching with 25 mA gate trigger current (IGT), low on-state voltage (2.0 V max at 5.5 A), and robust dV/dt immunity (200 V/µs min). It is used in home appliance motor control (e.g., fan speed controllers, electrovalve actuation) and small lamp dimming circuits requiring reliable zero-crossing–independent triggering.

For engineers reviewing the Z0410NF datasheet, Z0410NF pinout, Z0410NF application, or Z0410NF equivalent, key selection criteria include gate sensitivity (25 mA IGT), blocking voltage (800 V VDRM), thermal resistance (15 °C/W junction-to-lead), and surge rating (21 A non-repetitive at 60 Hz), especially in thermally constrained PCB layouts.

Technical Context

The Z0410NF operates as a four-quadrant bidirectional thyristor, triggered by gate current applied between G and A1 terminals regardless of A2 polarity. Its 25 mA IGT enables direct drive from 3.3 V/5 V GPIO pins without external amplification.

It features 200 V/µs critical dV/dt (Q1–Q4), 20 A/µs critical dI/dt, and 2.2 A²s I²t fusing value - enabling stable operation in inductive load switching (e.g., universal motor commutation) without false turn-on or thermal runaway under transient stress.

Key Specifications

Pinout & Package

TO-202-3 package: insulated plastic case with three leads in inline configuration; leads are electrically isolated from heatsink mounting surface. Standard JEDEC TO-202 outline with 2.54 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTA04-800B and MAC4DCM, Z0410NF uniquely balances 25 mA gate sensitivity, 800 V blocking, and TO-202-3 footprint-making it optimal for space-constrained, microcontroller-driven 230 VAC appliance controls where direct GPIO drive and thermal efficiency are prioritized.

Availability

Z0410NF is available at Aetrix Electronics and suitable for home appliance motor control, electrovalve actuation, and small lamp dimming requiring stable component supply across high-volume production cycles.

Supply support for Z0410NF 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, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

Z0410NF belongs to the Z04 series of standard TRIACs engineered specifically for cost-effective, reliable AC power switching in white goods and building automation systems.

FAQ

What is the maximum junction temperature for continuous operation?

The Z0410NF has an operating junction temperature range of −40 °C to +125 °C. Continuous operation at 125 °C requires derating IT(RMS) to ≤2.5 A based on Figure 2 in the datasheet, assuming Rth(j-a) = 100 °C/W and no forced airflow.

Can Z0410NF be used with 3.3 V microcontrollers without a gate driver?

Yes - its 25 mA maximum IGT (Quadrant I) is compatible with most 3.3 V GPIO outputs capable of sourcing ≥25 mA. A series resistor of 120 Ω limits gate current to ~25 mA when driven from 3.3 V, satisfying trigger requirements without external transistor buffering.

How does the TO-202-3 package affect thermal performance compared to TO-220?

TO-202-3 offers lower thermal resistance to lead (15 °C/W vs. ~25 °C/W for TO-220) but lacks a metal tab for direct heatsink mounting. Heat must be conducted through PCB copper pours or clip-on heatsinks attached to leads, making it ideal for compact, low-to-medium power layouts.

Is Z0410NF compliant with RoHS and REACH regulations?

Yes - Z0410NF is manufactured in ST's ECOPACK® package with lead-free second-level interconnect, fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed by ST's official product documentation and inner box labeling.