Infineon Technologies TT140N16SOFHPSA1

Overview

TT140N16SOFHPSA1 from Semikron is a phase-control thyristor module with dual anti-parallel SCR configuration, rated for 140 A average on-state current (ITAVM) at TC = 85°C, 1800 V repetitive peak off-state voltage (VDRM/VRRM), and 4000 A non-repetitive surge current (ITSM). It employs AlN ceramic isolation and pressure-contact silicon die for industrial AC power control in medium-voltage rectification and motor speed regulation.

For engineers reviewing the TT140N16SOFHPSA1 datasheet, TT140N16SOFHPSA1 pinout, TT140N16SOFHPSA1 application, or TT140N16SOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.095 °C/W per module), critical dv/dt rating (1000 V/µs), gate trigger current (≤150 mA), and forced-cooling-compatible mechanical mounting (M2 terminals, 6 Nm torque).

Technical Context

This thyristor module implements a two-arm, anti-parallel SCR topology optimized for line-commutated phase-angle control in AC mains-fed systems. Its design supports B2 (two-pulse) and B6 (six-pulse) bridge configurations with validated transient thermal impedance ZthJC data for sinusoidal and rectangular conduction angles.

It features a 125 °C maximum junction temperature, 2.5 kV RMS insulation test voltage (1 min), and gate-controlled turn-on with latching current ≤800 mA and holding current ≤200 mA - enabling reliable triggering under high dv/dt stress and low-impedance gate drive conditions.

Key Specifications

Pinout & Package

TT140N16SOFHPSA1 is housed in a press-pack module package with isolated copper baseplate, AlN ceramic insulation, and M2 screw terminals. Dimensions: 70 mm × 45 mm × 25 mm (L×W×H); weight: 310 g; creepage distance: 15 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 140/16 E and TT162N16KOF, TT140N16SOFHPSA1 offers superior dv/dt immunity and pressure-contact die longevity for harsh industrial environments, while maintaining identical pinout and thermal interface compatibility with standard KM17 heatsinks.

Availability

TT140N16SOFHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, medium-voltage rectifiers, and static VAR compensators requiring stable component supply, long-life thermal cycling performance, and certified 2.5 kV isolation.

Supply support for TT140N16SOFHPSA1 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

Semikron is a German power semiconductor manufacturer specializing in high-reliability modules for industrial, energy, and traction applications since 1951.

This part belongs to Semikron's TT-series phase-control thyristor modules, engineered for line-commutated AC power conversion in demanding environments where thermal stability, isolation integrity, and gate timing precision are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is not fixed independently but depends on current loading and cooling method. At ITAVM = 140 A and TC = 85°C, junction temperature remains at 125°C. With forced cooling (e.g., KM17 + Papst 4650N), TC may reach 105°C while maintaining Tj ≤ 125°C - verified via ZthCA transient thermal model in the datasheet.

Does TT140N16SOFHPSA1 require a thermal interface material (TIM)?

Yes - the "HPSA1" suffix denotes qualification with a specific high-performance thermal interface material. RthCH is specified as 0.03 °C/W per module *with TIM*. Omitting TIM increases thermal resistance significantly and risks exceeding Tj max under rated load; Semikron recommends using the qualified TIM type and applying 6 Nm mounting torque to M2 terminals.

Can this module replace discrete SCRs in an existing B6 bridge design?

Yes - its dual anti-parallel arm structure, identical M2 terminal layout, and 70 mm × 45 mm footprint allow direct replacement of two discrete SCRs per phase in B6 bridges. Gate drive circuits must maintain separate G/K references per arm and respect the 3 µs max gate delay tolerance to preserve firing angle accuracy across all six arms.

What is the recommended gate drive circuit for reliable triggering?

A pulse transformer or optocoupler-based driver delivering ≥0.6 A peak gate current for ≥20 µs, with ≤2 V open-circuit voltage and ≤10 Ω source impedance, meets IGT ≤ 150 mA and IL ≤ 800 mA requirements. The datasheet specifies iGM = 0.6 A and diG/dt = 0.6 A/µs as test conditions - matching these ensures consistent latching across temperature and aging.