Infineon Technologies DT142N12KOFHPSA1

Overview

DT142N12KOFHPSA1 from Semikron is a phase-control thyristor module with dual anti-parallel SCR configuration, rated for 1200 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, enabling high-efficiency AC power control in industrial motor drives and heating systems.

For engineers reviewing the DT142N12KOFHPSA1 datasheet, DT142N12KOFHPSA1 pinout, DT142N12KOFHPSA1 application, or DT142N12KOFHPSA1 equivalent, key selection criteria include its 125°C max junction temperature, 0.220 °C/W max thermal resistance (junction-to-case per arm), 150 A/µs critical di/dt, 1000 V/µs critical dv/dt, and pressure-contact Si pellet construction with AlN isolation.

Technical Context

This dual-thyristor module implements forced-commutated phase-angle control in AC line-frequency applications. Its 200 µs typical turn-off time (tq) at 100 V reverse voltage and 10 A/µs commutation di/dt supports reliable operation in B2 and B6 bridge configurations up to 300 A output current under natural or forced cooling.

The module integrates two silicon pellets in a single press-pack housing with aluminum nitride (AlN) internal insulation and M1/M2 mechanical/electrical mounting torque specifications. Thermal performance is characterized by analytical ZthJC and ZthCA transient impedance models for both sinusoidal and rectangular conduction angles.

Key Specifications

Pinout & Package

DT142N12KOFHPSA1 is housed in a press-pack module with isolated terminals and pressure-contact Si pellets. The package uses AlN ceramic isolation and features M1 (6 Nm ±15%) mechanical mounting and M2 (6 Nm ±10%) electrical terminal torque specifications. Weight is 310 g; creepage distance is 15 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT142N12KOFHPSA1 and SKKT 142/12 E, DT142N12KOFHPSA1 uniquely integrates dual anti-parallel SCRs in one module-reducing PCB footprint, eliminating external reverse-blocking diodes, and simplifying gate drive synchronization for full-wave AC control.

Availability

DT142N12KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, resistive heating control, DC power supply input stages, and reactive power compensation requiring stable component supply and long-term production continuity.

Supply support for DT142N12KOFHPSA1 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 conversion, with ISO/TS 16949 and IATF 16949 certification.

This part belongs to Semikron's DT-series press-pack thyristor modules, designed specifically for high-current, high-voltage phase-control applications in harsh industrial environments where thermal cycling and long service life are critical.

FAQ

What is the maximum allowable case temperature for DT142N12KOFHPSA1?

The maximum allowable case temperature is not specified as a standalone limit; instead, the device is rated for ITAVM = 142 A at TC = 85°C. Case temperature must be maintained ≤85°C under continuous DC-equivalent load to meet that current rating. Higher case temperatures require derating per the TC = f(ITAVM) curves in the datasheet.

Does DT142N12KOFHPSA1 require a heatsink? If so, what thermal resistance is recommended?

Yes, a heatsink is mandatory. For natural cooling with KM17 (45W) heatsink and 3 modules per heatsink, RthCA ≈ 1.7 °C/W is typical. Under forced cooling (Papst 4650N), RthCA drops to ~0.5 °C/W. Designers must select heatsink RthCA such that TC ≤ 85°C at the target ITAVM, using RthJC = 0.220 °C/W and RthCH = 0.06 °C/W.

Can DT142N12KOFHPSA1 be used in a single-phase full-wave rectifier?

Yes-it is optimized for this use. Its dual anti-parallel SCR structure allows direct implementation of a single-phase full-wave (B2) rectifier without external reverse-blocking components. Gate signals must be phased 180° apart to control positive and negative half-cycles independently.

What is the gate drive requirement for reliable turn-on?

Each gate (G1/G2) requires ≥0.6 A peak trigger current with diG/dt ≥ 0.6 A/µs and pulse width ≥20 µs. Maximum gate trigger current is 150 mA, and maximum gate trigger voltage is 2 V. Gate non-trigger current is limited to 10 mA at full VDRM, ensuring noise immunity in noisy industrial environments.