Infineon Technologies TT142N14KOFHPSA1

Overview

TT142N14KOFHPSA1 from Semikron is a phase-control thyristor module with dual anti-parallel SCR configuration, rated for 1400 V repetitive peak off-state voltage (VDRM/VRRM), 142 A average on-state current (ITAVM) at TC = 85°C, and 230 A RMS on-state current (ITRMSM). It delivers 1.56 V maximum on-state voltage at 500 A and 125°C junction temperature, and is designed for industrial AC power control in medium-power rectifier and motor drive systems.

For engineers reviewing the TT142N14KOFHPSA1 datasheet, TT142N14KOFHPSA1 pinout, TT142N14KOFHPSA1 application, or TT142N14KOFHPSA1 equivalent, key selection criteria include commutated turn-off time (tq = 200 µs typ.), critical dv/dt rating (1000 V/µs), gate trigger current (≤150 mA), and thermal resistance (RthJC = 0.220 °C/W per arm).

Technical Context

This dual SCR module operates in forced- or natural-cooled phase-controlled rectification topologies, supporting B2 (two-pulse) and B6 (six-pulse) bridge configurations. Its 125°C maximum junction temperature and 0.220 °C/W thermal resistance per arm enable stable conduction under high-duty-cycle AC line switching.

The device features pressure-contact silicon die on AlN ceramic isolation, with validated commutation capability (tq = 200 µs typ. at 100 V reverse recovery voltage) and robust dv/dt immunity (1000 V/µs) to prevent false triggering in noisy industrial environments.

Key Specifications

Pinout & Package

TT142N14KOFHPSA1 is housed in a press-pack module with isolated copper baseplate and AlN ceramic insulation. Mechanical mounting uses M1 screws (6 Nm ±15%), and electrical terminals conform to DIN 46244 A (2.8 × 0.8 mm flat blade). Control terminals are separate gate/cathode pairs per SCR arm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 142/14, TT142N14KOFHPSA1 offers superior mechanical serviceability via pressure-contact design, while TT162N14KOFHPSA1 provides scalable current capacity within identical mounting constraints-both retain matching gate drive requirements and thermal interface geometry.

Availability

TT142N14KOFHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, electroplating power supplies, medium-voltage soft starters, and reactive power compensation systems requiring stable component supply across multi-year production cycles.

Supply support for TT142N14KOFHPSA1 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 manufacturer specializing in power semiconductor modules, known for high-reliability solutions in industrial, energy, and traction applications.

This part belongs to Semikron's TT-series phase-control thyristor modules, engineered specifically for ruggedized AC power conversion in harsh environments where thermal stability, dv/dt immunity, and long-term pressure-contact integrity are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature is not specified as a standalone limit; instead, the device is rated for 142 A average on-state current at TC = 85°C. Operation above this requires derating based on thermal resistance (RthJC = 0.220 °C/W per arm) and heatsink performance. The junction must not exceed 125°C under any condition.

Does TT142N14KOFHPSA1 require snubber circuits in standard B6 rectifier applications?

Snubbers are recommended when operating near the 1000 V/µs critical dv/dt limit or with highly inductive loads. For typical 50/60 Hz B6 rectifiers with moderate source impedance, the built-in dv/dt immunity often suffices-but transient suppression remains advisable for long-term reliability in variable-speed drive interfaces.

Can this module be used in single-phase phase-control applications?

Yes-it supports single-phase full-wave control using one arm (e.g., A1–K1 + G1–K1) while leaving the second arm unused or paralleled. Gate drive must be isolated per arm, and thermal derating applies since only one arm dissipates heat. Full dual-arm utilization is required to achieve rated 142 A ITAVM.

What is the gate drive power requirement per SCR arm?

Each arm requires ≤150 mA gate trigger current (IGT) at ≤2 V gate-cathode voltage (VGT) for reliable turn-on. Peak gate power is <300 mW per pulse. Gate drive must provide ≥0.6 A/µs diG/dt and sustain ≥0.6 A gate current for ≥20 µs to ensure latching (IL ≤ 800 mA) and avoid false turn-off during commutation.