STMicroelectronics T410-600H

Overview

T410-600H from STMicroelectronics is a 4 A, 600 V three-quadrant logic-level triac in IPAK package, designed for snubberless AC switching in inductive loads. It features 10 mA maximum gate trigger current (IGT), 15 mA maximum holding current (IH), and 25 mA maximum latching current (IL), enabling direct microcontroller drive without external amplification in motor control and appliance applications.

For engineers reviewing the T410-600H datasheet, T410-600H pinout, T410-600H application, or T410-600H equivalent, this part is selected for robust commutation performance on universal motors, electrovalves, and kitchen appliances where high dV/dt immunity (40 V/µs) and low IGT reduce system BOM cost and simplify gate drive design.

Technical Context

The T410-600H employs ST's Snubberless™ logic-level triac architecture, supporting reliable turn-on across all three quadrants (I, II, III) with gate sensitivity optimized for 10 mA max IGT at 25 °C. Its 40 V/µs minimum critical dV/dt at 125 °C ensures stable operation under fast transient conditions in noisy AC line environments.

Thermal performance is defined by R_th(j-c) = 2.6 °C/W (junction-to-case) and R_th(j-a) = 100 °C/W (junction-to-ambient, IPAK), requiring heatsinking for sustained 4 A RMS conduction. The device operates over -40 to +125 °C junction temperature range and supports non-repetitive surge currents up to 31 A (60 Hz, 16.7 ms).

Key Specifications

Pinout & Package

IPAK package (plastic, insulated tab, halogen-free, lead-free); dimensions per ST DocID7699 Rev 9 Table 8: 6.20 mm × 6.65 mm body, 16.10 mm height, 0.9–1.2 mm tab thickness, 2.28 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 T410-600B and T410-600T, the T410-600H offers intermediate thermal resistance (R_th(j-a) = 100 °C/W) and surface-mount compatibility with insulated tab, making it ideal for sealed, space-constrained appliance modules needing isolation without through-hole mounting.

Availability

T410-600H is available at Aetrix Electronics and suitable for universal motor speed control, electrovalve actuation, and kitchen appliance heating control requiring stable component supply across industrial production cycles.

Supply support for T410-600H 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.

The T4 series triacs are part of ST's Power Discrete portfolio, engineered specifically for snubberless, logic-level AC switching in cost-sensitive, high-volume home appliance and power tool applications.

FAQ

Is T410-600H compatible with zero-crossing SSR drivers?

No - T410-600H is a three-quadrant logic-level triac requiring phase-controlled gate pulses, not zero-crossing-triggered opto-triac drivers. It must be driven with synchronized gate signals relative to AC line phase to achieve dimming or speed control. Its gate does not respond to zero-crossing detection alone.

What is the maximum recommended case temperature for continuous 4 A RMS operation?

The maximum case temperature for continuous 4 A RMS operation is 110 °C, as specified in Table 3 (Absolute Maximum Ratings). Exceeding this requires derating IT(rms) per Figure 2 in ST DocID7699 Rev 9, with thermal design targeting ≤ 2.6 °C/W junction-to-case path to maintain Tj ≤ 125 °C.

Does T410-600H require a heatsink in typical appliance applications?

Yes - at 4 A RMS with typical V_TM ≈ 1.5 V, power dissipation exceeds 6 W. With R_th(j-c) = 2.6 °C/W and ambient > 50 °C, a heatsink is mandatory to limit junction temperature to ≤ 125 °C. ST recommends aluminum heatsinks ≥ 25 cm² for IPAK-mounted units.

Can T410-600H replace T435-600H in existing designs?

No - T435-600H has 35 mA max IGT and higher dV/dt (400 V/µs), indicating different gate structure and intended for snubberless high-noise environments. Substituting T410-600H risks insufficient gate drive margin and false triggering; gate drive circuitry must be revalidated.