Infineon Technologies TT570N16KOFHOSA1

Overview

TT570N16KOFHOSA1 from Infineon Technologies is a press-pack, dual-arm phase-control thyristor module rated for 1600 V repetitive peak off-state voltage (VDRM/VRRM), 600 A average on-state current at TC = 85 °C (ITAVM), and 17 kA non-repetitive surge current (ITSM). It features electrically insulated baseplate, pressure-contact silicon pellet construction, and Advanced Medium Power Technology (AMPT) for high reliability in industrial power control circuits.

For engineers reviewing the TT570N16KOFHOSA1 datasheet, TT570N16KOFHOSA1 pinout, TT570N16KOFHOSA1 application, or TT570N16KOFHOSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.058 K/W per module), critical dv/dt rating (1000 V/µs), gate trigger voltage (≤2.2 V), and crowbar/soft starter duty cycle compatibility.

Technical Context

This dual-thyristor module operates in phase-controlled rectification and AC power switching configurations, supporting both B2 (two-pulse) and B6 (six-pulse) bridge topologies. Its 125 °C maximum junction temperature, 3.6 kV insulation test voltage (1 sec), and 19 mm creepage distance meet IEC61140 Class 1 safety requirements for medium-voltage industrial drives.

The module uses pressure-contact die attachment to eliminate wire bonds and solder fatigue, enabling stable performance under high di/dt (200 A/µs) and mechanical vibration (50 m/s² at 50 Hz). Thermal impedance modeling (ZthJC analytical elements provided) supports transient loss calculation for sinusoidal and rectangular conduction angles from 30° to 180°.

Key Specifications

Pinout & Package

TT570N16KOFHOSA1 is housed in an industrial standard press-pack module with electrically insulated aluminum nitride (AlN) baseplate and M12 terminal screws for main current paths. Mechanical mounting uses M6 screws (6 Nm torque). Control terminals conform 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 TT570N16KOFHOSA1, TT570N16KOFS trades baseplate isolation for lower thermal resistance, while TD570N16KOF offers arm-level modularity at the cost of doubled part count and interconnect complexity in full-bridge designs.

Availability

TT570N16KOFHOSA1 is available at Aetrix Electronics and suitable for soft starters, drive rectifiers, and crowbar protection systems requiring stable component supply, long lifecycle support, and certified isolation performance.

Supply support for TT570N16KOFHOSA1 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 9001 and IATF 16949.

This device belongs to Infineon's high-power thyristor module portfolio designed specifically for industrial medium-voltage AC power control-including motor starting, energy conversion, and fault protection-where reliability under harsh thermal and electrical stress is mandatory.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is not specified as a standalone limit; instead, the module is rated for ITAVM = 600 A at TC = 85 °C. Operation above this requires derating per the TC = f(ITAVM) curve on page 7 of the datasheet, where 600 A is permissible up to TC ≈ 95 °C for 180° conduction, but junction temperature must remain ≤125 °C.

Does TT570N16KOFHOSA1 support forced-air or liquid cooling?

Yes-it supports both cooling methods. The RthCH value (0.01 K/W per module) assumes optimal thermal interface (e.g., thermal paste + flatness <50 µm). Liquid-cooled heatsinks achieving RthCA ≤ 0.1 K/W enable full 600 A rating; forced-air designs require ≥0.2 K/W RthCA to stay within thermal limits per the Ptot vs. TA curves on pages 8–9.

Can this module be used in reverse-conducting configurations?

No. TT570N16KOFHOSA1 contains two standard (forward-conducting) thyristors only. For reverse-conducting operation, external anti-parallel diodes or a dedicated reverse-conducting thyristor (RCT) module would be required-neither is integrated into this package.

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

A minimum gate trigger voltage of 2.2 V (VGT max) and 250 mA (IGT max) at 25 °C is required. Gate pulses must deliver ≥1 A peak current for latching (IL = 1500 mA), with di/dt ≥1 A/µs and pulse width ≥20 µs. Recommended gate power is 40 W/1 ms (curve 'b' on page 6) to ensure margin across temperature and aging.