Infineon Technologies TT142N12KOFHPSA1

Overview

TT142N12KOFHPSA1 from Semikron is a phase-control thyristor module configured as a single-phase, press-pack dual-arm (anti-parallel) device for AC power regulation in industrial rectifiers and motor drives. It delivers 142 A average on-state current (ITAVM), 1200 V repetitive peak off-state voltage (VDRM/VRRM), and 4800 A non-repetitive surge current (ITSM) at 10 ms, operating up to 125 °C junction temperature in high-power AC line switching applications.

For engineers reviewing the TT142N12KOFHPSA1 datasheet, TT142N12KOFHPSA1 pinout, TT142N12KOFHPSA1 application, or TT142N12KOFHPSA1 equivalent, key selection criteria include gate trigger current (≤150 mA), critical dv/dt rating (1000 V/µs), thermal resistance (0.110 °C/W junction-to-case per module), and forced-air-cooled output capability up to 300 A in B6 six-pulse bridge configurations.

Technical Context

This thyristor module implements a pressure-contact silicon pellet design with aluminum nitride (AlN) internal insulation, enabling high-current commutation without solder fatigue. Its dual-arm anti-parallel configuration supports bidirectional conduction required for AC phase control, with gate-controlled delay time ≤3 µs and circuit-commutated turn-off time of 200 µs at rated conditions.

The module's thermal architecture features low transient junction-to-case impedance (ZthJC), validated for both natural and forced cooling-e.g., 0.515 °C/W effective RthCA under Papst 4650N fan cooling-and supports stable operation across -40 °C to +125 °C case temperature range with 2.5 kV RMS insulation test voltage.

Key Specifications

Pinout & Package

TT142N12KOFHPSA1 uses a press-pack dual-arm module package with isolated copper baseplate and AlN ceramic insulation. Mechanical mounting uses M1 screws (6 Nm ±15%) and terminal connections use M2 screws (6 Nm ±10%). 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 SKKT 106/12 E, TT142N12KOFHPSA1 provides 34% higher continuous current and lower thermal resistance, making it preferable for high-duty-cycle industrial drives; versus TT162N12KOFHPSA1, it offers cost and thermal optimization where 142 A suffices, avoiding over-specification.

Availability

TT142N12KOFHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, electroplating DC power supplies, medium-voltage soft starters, and induction heating controllers requiring stable component supply and long-term production continuity.

Supply support for TT142N12KOFHPSA1 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, renewable energy, and traction applications since 1951.

This part belongs to Semikron's TT-series phase-control thyristor modules, engineered for robust AC power regulation in harsh environments where thermal cycling, voltage transients, and long service life are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature (TC) is not fixed but depends on current load and conduction angle. At ITAVM = 142 A and Θ = 180°, TC must not exceed 85 °C for rated average current. The module supports case temperatures up to 125 °C only under derated current conditions, as defined in the thermal derating curves on page 7 of the datasheet.

Does TT142N12KOFHPSA1 require a heatsink, and what thermal interface material is recommended?

Yes, mandatory heatsinking is required. Semikron specifies maximum RthCH of 0.03 °C/W per module, achievable with thermally conductive grease (e.g., Dow Corning TC-5622) and flatness ≤20 µm on both baseplate and heatsink surfaces. Mounting torque must be strictly controlled at 6 Nm ±15% to ensure uniform pressure contact.

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

No-TT142N12KOFHPSA1 is a single-phase, dual-arm anti-parallel module. For three-phase B6 rectification, three such modules are required (one per phase leg), wired with isolated gate drives and synchronized firing angles. Its pinout and internal topology do not support direct three-phase bridge integration.

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

A minimum gate trigger voltage of 2 V and peak current of 150 mA are required at 25 °C. At maximum junction temperature (125 °C), gate current must increase to ≥200 mA due to rising VGT. Pulse width should exceed 20 µs, and di/dt must be ≥0.6 A/µs to ensure latching at IL = 800 mA, as specified in the gate characteristics table.