Diodes Incorporated T4M10T600B

Overview

T4M10T600B from Diodes Incorporated is a 4A RMS, 600V bidirectional thyristor (TRIAC) designed for AC power control in solid-state relays, motor speed controllers, and lighting dimmers. It features sensitive gate triggering (10mA IGT), high dv/dt immunity (50V/µs at +125°C), and operates reliably across three quadrants (Q1/Q2/Q3) in TO-220AB package.

For engineers reviewing the T4M10T600B datasheet, T4M10T600B pinout, T4M10T600B application, or T4M10T600B equivalent, key selection factors include gate sensitivity for microcontroller interfacing, surge rating (40A), holding current (15mA), thermal derating to +100°C case temperature, and RoHS-compliant "Green" packaging.

Technical Context

This TRIAC uses a planar passivated silicon structure optimized for robust commutation in phase-control AC circuits. Its three-quadrant operation eliminates false triggering in Q4, while the 50V/µs minimum dv/dt rating ensures stable blocking under fast transient conditions at elevated junction temperatures.

The device supports logic-level gate drive with guaranteed IGT ≤10mA and VGT ≤1.3V across all quadrants, enabling direct interface with 3.3V/5V microcontrollers without external amplification. On-state voltage is specified at 1.6V peak under ±6A pulsed conditions, supporting efficient conduction with low thermal dissipation.

Key Specifications

Pinout & Package

Package: TO-220AB - Rugged, through-hole molded plastic housing with matte tin-plated leads (RoHS-compliant, halogen-free), rated UL 94V-0, weight ≈2.0g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB16-600BW and BT137-600E, the T4M10T600B uniquely balances microcontroller compatibility (10mA IGT), industrial-grade dv/dt immunity (50V/µs), and compact 4A capability-making it optimal for space-constrained, noise-prone embedded AC control where gate drive simplicity and reliability are prioritized over raw current headroom.

Availability

T4M10T600B is available at Aetrix Electronics and suitable for solid-state relays, AC motor controllers, lighting dimmers, and heating element regulators requiring stable component supply across automotive, industrial automation, and appliance production programs.

Supply support for T4M10T600B 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and automotive markets with high-reliability components.

The T4M10T600B belongs to Diodes' high-immunity TRIAC product line, engineered specifically for noise-resilient AC power switching in harsh electromagnetic environments-emphasizing gate sensitivity, thermal robustness, and environmental compliance.

FAQ

What is the maximum junction temperature and how does it affect thermal design?

The T4M10T600B has a rated junction temperature range of –40°C to +125°C. At +100°C case temperature, its 4A RMS rating applies; exceeding this requires derating per the datasheet's I_T(RMS) vs. T_C curve. Thermal design must ensure θ_JC + θ_CS + θ_SA keeps T_J ≤ +125°C under worst-case load and ambient conditions.

Can the T4M10T600B be directly driven by a 3.3V microcontroller GPIO?

Yes - its gate trigger current is guaranteed ≤10mA and gate trigger voltage ≤1.3V at 25°C, making it compatible with 3.3V logic outputs. A series resistor (e.g., 220Ω) limits current to ~10mA when V_GPIO = 3.3V and V_GT ≈ 1.3V, satisfying the I_GT requirement without external amplification.

Why does the TO-220AB package have four pins, and are Pins 2 and 4 electrically identical?

Yes - Pins 2 and 4 are both connected internally to Main Terminal 2 (MT2). The dual-tab configuration improves thermal conduction and mechanical stability in high-current, high-vibration applications. Pin 1 is MT1, Pin 3 is Gate, and Pins 2 & 4 share the same MT2 node - verified in Diodes' DS45221 Rev. 10 pin assignment diagram.

Is the T4M10T600B qualified for automotive applications per AEC-Q101?

No - the standard T4M10T600B is not AEC-Q101 qualified. Diodes offers automotive-grade variants (e.g., T4M10T600BQ) with PPAP documentation, IATF 16949 manufacturing, and extended testing. For automotive use, contact Diodes' automotive sales team to confirm qualification status and obtain the Q-suffix part number.