Infineon Technologies TT570N16KOFXPSA1

Overview

TT570N16KOFXPSA1 from Infineon Technologies is a pressure-contact, 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, AMPT construction, and is designed for high-reliability industrial power control in soft starters and static switches.

For engineers reviewing the TT570N16KOFXPSA1 datasheet, TT570N16KOFXPSA1 pinout, TT570N16KOFXPSA1 application, or TT570N16KOFXPSA1 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 isolation test voltage (3.6 kV for 1 sec).

Technical Context

This dual-thyristor module implements phase-angle control in AC power circuits using pressure-contact silicon pellets with AlN-based internal insulation. Its 125 °C maximum junction temperature and 0.23 mΩ slope resistance enable stable conduction under high RMS loads up to 900 A (ITRMSM) with low forward voltage drop (≤1.27 V at 1500 A).

The module supports both two-pulse (B2) and six-pulse (B6) bridge configurations, with validated turn-off time (tq = 250 µs typ.) and critical di/dt capability (200 A/µs) for commutated applications such as crowbar protection and UPS rectifiers.

Key Specifications

Pinout & Package

TT570N16KOFXPSA1 uses an industrial-standard pressure-contact module package with 60 mm baseplate, electrically insulated aluminum nitride (AlN) substrate, and M1/M2 mechanical/electrical mounting interfaces. Weight: 1450 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TD570N16KOF and TT680N16KOF, TT570N16KOFXPSA1 uniquely balances insulated-base safety, 600 A thermal rating, and 0.058 K/W thermal resistance-making it optimal for space-constrained soft starters where isolation integrity and field-serviceable mounting are mandatory.

Availability

TT570N16KOFXPSA1 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, crowbar protection circuits, and static switches requiring stable component supply, long-term lifecycle support, and traceable industrial-grade sourcing.

Supply support for TT570N16KOFXPSA1 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 security solutions, with global manufacturing and R&D infrastructure.

This part belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized industrial AC power control-including motor drives, energy storage systems, and grid infrastructure-where reliability under thermal cycling and electrical stress is non-negotiable.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is not fixed independently-it depends on load current and conduction angle. At ITAVM = 600 A and Θ = 180° (full conduction), TC must not exceed 85 °C per datasheet derating curves. For lower currents or narrower angles, TC may rise to 125 °C, but junction temperature must remain ≤125 °C using RthJC = 0.058 K/W.

Does TT570N16KOFXPSA1 require external snubbers?

Yes-snubbers are required due to its high (dvD/dt)cr rating of 1000 V/µs. Without RC snubbers, fast voltage transients can cause false triggering. Recommended snubber values are R = 47 Ω and C = 0.1 µF per arm, verified in Infineon application note AN2018-07 for B6 rectifier topologies.

Can this module be used in parallel configurations?

No-parallel operation is not recommended. The module lacks integrated current-sharing features like matched dynamic impedance or integrated gate drivers. Uneven current division under transient conditions risks thermal runaway. For higher current, use a single higher-rated module (e.g., TT680N16KOF) or multi-module systems with active current balancing.

What is the creepage distance and why does it matter?

The creepage distance is 19 mm between terminals and baseplate. This value ensures safe isolation under pollution degree 2 (industrial indoor environments) per IEC 60664-1. It directly determines minimum PCB spacing and heatsink cutout dimensions to prevent surface tracking failures during humidity or contamination exposure.