Infineon Technologies TZ740N22KOFTIMHPSA1

Overview

TZ740N22KOFTIMHPSA1 from Infineon Technologies is a phase-control thyristor module with dual 2200 V reverse-blocking capability, 819 A average on-state current at 85°C case temperature, and 30 kA non-repetitive surge rating. It employs pressure-contact technology and pre-applied thermal interface material (TIM) for high-reliability industrial power control in soft starters and static switches.

For engineers reviewing the TZ740N22KOFTIMHPSA1 datasheet, TZ740N22KOFTIMHPSA1 pinout, TZ740N22KOFTIMHPSA1 application, or TZ740N22KOFTIMHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.0405 K/W), gate trigger current (≤250 mA), critical dv/dt rating (1000 V/µs), and insulated baseplate construction for high-voltage isolation in drive rectifier systems.

Technical Context

This thyristor module integrates two anti-parallel silicon chips in a single pressure-contact package, enabling bidirectional phase-controlled conduction without external commutation circuitry. Its 125°C maximum junction temperature and 3.6 kV insulation test voltage support operation in harsh industrial environments with high transient overvoltage exposure.

The device features a low on-state threshold voltage (0.82 V) and slope resistance (0.17 mΩ), delivering predictable forward conduction losses up to 1500 A RMS. Gate control is optimized for robust triggering under high di/dt conditions (200 A/µs critical rate) and fast turn-off (350 µs typical commutated turn-off time).

Key Specifications

Pinout & Package

Package: Industrial-standard 70 mm × 146 mm press-fit thyristor module with electrically insulated AlN baseplate, M2 terminal torque (18 Nm), and integrated TIM layer. Weight: 1950 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT740N22KOF and TZ740N22KOF, TZ740N22KOFTIMHPSA1 provides superior thermal interface readiness and tighter RthCH specification, reducing heatsink design margin requirements and accelerating time-to-prototype in high-power soft starter development.

Availability

TZ740N22KOFTIMHPSA1 is available at Aetrix Electronics and suitable for soft starters, drive rectifiers, crowbar protection circuits, and battery chargers requiring stable component supply across multi-year production programs.

Supply support for TZ740N22KOFTIMHPSA1 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 R&D centers.

This part belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized phase-angle control in industrial motor drives, UPS systems, and grid-connected power conversion equipment.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (T_C) is +125°C, as defined by the device's thermal limits and derating curves. At this temperature, the average on-state current (I_TAVM) remains 819 A under DC or 180° conduction conditions. Operation above this temperature risks irreversible junction damage and must be avoided even momentarily.

Does the pre-applied TIM require additional thermal compound during installation?

No-TZ740N22KOFTIMHPSA1 ships with factory-applied thermal interface material already bonded to the baseplate. Adding extra thermal paste or pads will degrade thermal performance and void the specified R_thCH = 0.010 K/W rating. Mounting must follow Infineon's recommended torque (18 Nm for M2 terminals) and surface flatness specifications.

Can this module replace older TZ740N22KOF units in existing designs?

Yes-TZ740N22KOFTIMHPSA1 is mechanically and electrically identical to TZ740N22KOF except for the pre-applied TIM and updated packaging code. All pinouts, voltage/current ratings, gate characteristics, and thermal profiles match exactly, enabling drop-in replacement without layout or firmware changes.

What gate drive voltage and current are required for reliable turn-on?

A minimum gate trigger voltage of 2 V and peak current of 250 mA are required at 25°C to ensure turn-on across the full operating temperature range (-40°C to +125°C). Gate pulses must exceed 20 µs duration and maintain ≥1 A/µs di/dt to satisfy the 200 A/µs critical rate-of-rise requirement and prevent misfiring under high dv/dt conditions.