Infineon Technologies TT170N16KOFHPSA1

Overview

TT170N16KOFHPSA1 from Infineon Technologies is a press-pack, double-sided cooled phase-control thyristor module rated for 1600 V repetitive peak off-state voltage (VDRM/VRRM), 170 A average on-state current at TC = 85 °C, and 5200 A non-repetitive surge current (ITSM). It features electrically insulated baseplate, pressure-contact die attachment, and Advanced Medium Power Technology (AMPT) for industrial power control in soft starters and static switches.

For engineers reviewing the TT170N16KOFHPSA1 datasheet, TT170N16KOFHPSA1 pinout, TT170N16KOFHPSA1 application, or TT170N16KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.17 K/W), gate trigger current (≤200 mA), on-state voltage (≤1.65 V at 600 A), critical dv/dt rating (1000 V/µs), and isolation test voltage (3.0 kV RMS).

Technical Context

This thyristor module implements a dual-arm, anti-parallel configuration suitable for AC phase-angle control and DC crowbar protection. Its pressure-contact construction eliminates wire bonds and enables high-current handling with low thermal resistance and robust short-circuit capability.

Designed for forced-air or liquid-cooled heatsink mounting, it supports conduction angles from 30° to 180°, with validated transient thermal impedance ZthJC data for both sinusoidal and rectangular current waveforms. Gate drive requires ≥1 A pulse with diG/dt ≥1 A/µs to ensure reliable turn-on under worst-case junction temperature (125 °C).

Key Specifications

Pinout & Package

TT170N16KOFHPSA1 uses an industrial-standard press-pack housing with electrically insulated baseplate (AlN ceramic), 50 mm × 50 mm footprint, and M12 terminal screws for main current paths. Control terminals conform to DIN 46244 A (2.8 × 0.8 mm flat blade).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT170N14KOFHPSA1, this part provides higher voltage margin for 690 VAC industrial systems; compared with TT200N16KOFHPSA1, it offers tighter cost and gate drive compatibility where 170 A suffices.

Availability

TT170N16KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, static switches, crowbar protection circuits, and drive rectifiers requiring stable component supply across long-lifecycle industrial programs.

Supply support for TT170N16KOFHPSA1 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, microcontrollers, and sensor solutions for industrial, automotive, and energy applications.

This part belongs to Infineon's high-power thyristor module product line, engineered for ruggedized AC power control in mission-critical industrial equipment where reliability, thermal stability, and surge immunity are mandatory.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is +125 °C, but the rated ITAVM of 170 A applies only at TC = 85 °C. At higher case temperatures, current must be linearly derated per the TC = f(ITAVM) curve in the datasheet, reaching zero at 125 °C for DC conduction.

Does TT170N16KOFHPSA1 require a heatsink? If so, what thermal resistance is recommended?

Yes - a heatsink is mandatory. With RthJC = 0.17 K/W and typical RthCH = 0.02 K/W, a heatsink with RthCA ≤ 0.15 K/W is recommended to maintain TC ≤ 85 °C at 170 A ITAVM under DC or 180° conduction, assuming ambient ≤ 40 °C and forced-air cooling.

Can this module be used in a single-phase full-wave rectifier?

Yes - configured as a B2 two-pulse bridge using both arms. Each arm handles half-wave conduction; the module supports up to 450 A peak output current in this topology, limited by thermal design and gate drive synchronization between A1/K1 and A2/K2.

What gate drive voltage and current are required for reliable turn-on at maximum junction temperature?

At Tvj = 125 °C, gate trigger voltage must exceed 2.0 V and current must exceed 200 mA for guaranteed turn-on. A practical gate driver should deliver ≥3 V and ≥500 mA peak with diG/dt ≥1 A/µs and pulse width ≥20 µs to ensure margin across temperature and aging.