Infineon Technologies TZ240N34KOFHPSA1

Overview

TZ240N34KOFHPSA1 from Infineon Technologies is a phase-control thyristor module rated for 240 A average on-state current (ITAVM) at TC = 85°C, 3400 V repetitive peak off-state voltage (VDRM/VRRM), and 6.1 kA non-repetitive surge current (ITSM). It features pressure-contact silicon die, aluminum nitride (AlN) internal isolation, and is designed for industrial AC power control in high-power rectification and motor drive systems.

For engineers reviewing the TZ240N34KOFHPSA1 datasheet, TZ240N34KOFHPSA1 pinout, TZ240N34KOFHPSA1 application, or TZ240N34KOFHPSA1 equivalent, key selection criteria include its 0.0745 °C/W junction-to-case thermal resistance, 100 A/µs critical di/dt, 500–1000 V/µs critical dv/dt, gate trigger current ≤250 mA, and compatibility with forced-air-cooled six-pulse bridge configurations.

Technical Context

This thyristor module implements a dual SCR (anti-parallel) configuration in a press-pack package, enabling bidirectional AC phase control without external reverse-blocking components. Its AlN ceramic isolation supports 3.6 kV insulation test voltage (1 sec), and the pressure-contact die architecture eliminates wire bonds for enhanced thermal cycling reliability.

The device operates with a threshold voltage (V(TO)) of 1.17 V and slope resistance (rT) of 1.7 mΩ at maximum junction temperature, delivering predictable on-state conduction losses across sinusoidal and rectangular current waveforms. Gate control is optimized for 1 A trigger current with 1 A/µs diG/dt, achieving ≤4.5 µs gate-controlled delay time.

Key Specifications

Pinout & Package

Package: Press-pack module with isolated copper baseplate, AlN ceramic insulation, and M1 mechanical mounting (6 Nm torque). Terminals: Main anode/cathode pairs and isolated gate terminals conforming to DIN 46244 A (2.8 × 0.8 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT240N34KOFHPSA1, TZ240N34KOFHPSA1 offers superior thermal cycling life and lower RthJC, while TZ250N34KOFHPSA1 provides marginal current headroom at identical form factor-both require no PCB redesign but differ in lifetime validation scope and gate drive robustness.

Availability

TZ240N34KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor soft-start, medium-voltage UPS inverters, and induction heating power stages requiring stable component supply, long-life thermal cycling performance, and certified 3.6 kV isolation.

Supply support for TZ240N34KOFHPSA1 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 semiconductors, automotive ICs, and security solutions, with global manufacturing and R&D centers.

This part belongs to Infineon's "Thyristor Modules" product line, engineered for high-reliability AC power control in heavy industrial environments where thermal robustness, isolation integrity, and gate drive simplicity are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature (TC) is 125°C, as specified in the datasheet's operating temperature range (Tc op: –40°C to +125°C). At this temperature, the device sustains ITAVM = 240 A only when mounted on a heatsink with RthCH ≤ 0.02 °C/W and ambient conditions meet forced-air cooling specifications.

Can TZ240N34KOFHPSA1 be used in parallel configurations?

Yes, but only with active current balancing-such as matched gate drive timing, identical busbar inductance, and thermal coupling-due to inherent parameter spread in V(TO) (1.17 V) and rT (1.7 mΩ). Parallel operation without balancing risks thermal runaway above 200 A per module.

What gate drive circuitry is recommended?

A pulse transformer with ≥1.5 VA rating and 1:1 turns ratio is recommended, delivering ≥1 A peak gate current with diG/dt ≥1 A/µs. The gate circuit must limit VGD to ≤0.2 V during non-trigger states and provide <4.5 µs tgd margin relative to main voltage zero-crossing detection.

Is creepage distance sufficient for 1000 V AC safety compliance?

Yes-the module provides 15 mm creepage distance, exceeding IEC 61800-5-1 requirements for Pollution Degree 3 and 1000 V AC working voltage (minimum 14 mm). This value is measured across the AlN insulator between main terminals and gate terminals under standardized humidity conditions.