Infineon Technologies TZ400N24KOFHPSA1

Overview

TZ400N24KOFHPSA1 from Infineon Technologies is a phase-control thyristor module rated for 2400 V repetitive peak off-state voltage (VDRM/VRRM), 400 A average on-state current (ITAVM) at TC = 85°C, and 13 kA non-repetitive surge current (ITSM). It features pressure-contact silicon pellets with aluminum nitride (AlN) internal insulation and is designed for high-power AC line-commutated rectification in industrial motor drives and DC power supplies.

For engineers reviewing the TZ400N24KOFHPSA1 datasheet, TZ400N24KOFHPSA1 pinout, TZ400N24KOFHPSA1 application, or TZ400N24KOFHPSA1 equivalent, key selection criteria include its 125°C maximum junction temperature, 0.065 °C/W junction-to-case thermal resistance, critical dv/dt rating of 1000 V/µs, and gate trigger current ≤250 mA - all essential for reliable forced-air-cooled B6 bridge designs.

Technical Context

This dual-thyristor module implements a B6 (six-pulse) bridge configuration with two independent arms, each supporting natural or forced cooling per heatsink mounting. Its 150 A/µs critical di/dt and 1000 V/µs critical dv/dt ensure robust commutation in high-inductance AC line applications.

The device uses silicon die with pressure-contact metallization and AlN ceramic isolation, enabling 3.0 kV RMS insulation test voltage (1 min) and 900 g total mass. Thermal transient impedance data (ZthJC) is provided for sinusoidal and rectangular conduction angles (0°–180°), supporting precise loss and case temperature modeling under real-world load profiles.

Key Specifications

Pinout & Package

Package: Press-pack module with isolated copper baseplate, M1 mechanical mounting (5 Nm ±15%), M2 electrical terminals (12 Nm ±10%), DIN 46244 A control terminals (2.8 × 0.8 mm), and 15 mm creepage distance. Weight: 900 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar phase-control thyristor module applications.

Compared with TT1200N24KOFHPSA1 and TZ400N22KOFHPSA1, TZ400N24KOFHPSA1 uniquely balances 2400 V blocking capability with compact 400 A rating and 900 g mass - making it optimal for space-constrained, 690 V industrial rectifiers requiring field-proven reliability and minimal thermal overhead.

Availability

TZ400N24KOFHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, DC power supplies for electroplating, and static VAR compensators requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TZ400N24KOFHPSA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power electronics, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

TZ400N24KOFHPSA1 belongs to Infineon's "Netz-Thyristor-Modul" series, engineered specifically for high-reliability, line-commutated AC/DC conversion in harsh industrial environments - emphasizing thermal robustness, voltage ruggedness, and long-term parameter stability.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature is not fixed but depends on ITAVM and conduction angle. At Θ = 180° (full conduction) and ITAVM = 400 A, TC reaches 85°C under natural cooling (KM17, 3 modules/heatsink); forced cooling allows TC up to 100°C at same current. The absolute limit is defined by Tvj max = 125°C and RthJC = 0.065 °C/W.

Does TZ400N24KOFHPSA1 require external snubbers in a B6 rectifier?

Snubbers are recommended but not always mandatory. With (dv/dt)cr = 1000 V/µs and typical line-side dv/dt <300 V/µs in 690 V systems, snubbers may be omitted if transformer leakage inductance and cable parasitics provide sufficient natural limiting. However, for reliability under fault transients, RC snubbers across each arm are advised.

Can TZ400N24KOFHPSA1 be used in asymmetrical firing configurations?

Yes. Its dual-arm architecture with electrically isolated gates (G1/G2) and independent anode/cathode terminals enables true asymmetrical firing - e.g., different conduction angles per arm to generate controlled harmonic content or manage reactive power in SVC topologies without additional external circuitry.

What is the gate drive requirement for reliable turn-on?

A minimum gate trigger current of 250 mA (IGT max) at 2.2 V (VGT max) is required. Recommended drive uses a pulse transformer or isolated gate driver delivering ≥500 mA peak for ≥20 µs, with diG/dt ≥1 A/µs, to ensure consistent latching (IL = 1500 mA) and avoid misfiring under high dv/dt noise conditions.