Infineon Technologies TT250N12KOFHPSA1

Overview

TT250N12KOFHPSA1 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching and rectification in industrial drive systems. It features 1200 V repetitive peak off-state voltage (VDRM/VRRM), 250 A average on-state current at TC = 85 °C, 8000 A non-repetitive surge current (ITSM), and 0.124 K/W junction-to-case thermal resistance - enabling robust operation in soft starters and static power controllers.

For engineers reviewing the TT250N12KOFHPSA1 datasheet, TT250N12KOFHPSA1 pinout, TT250N12KOFHPSA1 application, or TT250N12KOFHPSA1 equivalent, key selection criteria include verified gate trigger parameters (IGT ≤ 200 mA, VGT ≤ 2 V), pressure-contact construction for thermal cycle reliability, and pre-applied TIM option for consistent thermal interface performance in high-current rectifier bridges.

Technical Context

This dual-thyristor module implements a press-pack, electrically insulated baseplate design with AlN ceramic isolation (Class I, IEC 61140) and direct silicon-to-baseplate pressure contact-eliminating wire bonds and solder interfaces to sustain >10⁵ thermal cycles. Its 1200 V blocking rating and 150 A/µs critical di/dt support controlled turn-on in phase-angle modulated AC loads.

The device operates across -40 °C to +125 °C junction temperature range and delivers 1.5 V max on-state voltage at 800 A, with 0.8 V threshold voltage (VT0) and 0.7 mΩ slope resistance (rT) defining conduction loss behavior under DC and sinusoidal conduction angles from 30° to 180°.

Key Specifications

Pinout & Package

TT250N12KOFHPSA1 uses an industrial-standard press-pack module package with electrically insulated baseplate (AlN ceramic), 50 mm baseplate dimension, and M2 terminal screws (12 Nm torque). The module contains two anti-parallel thyristor arms sharing common cathode/anode terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT250N12KOFHPSA1, the TT250N16KOFHPSA1 provides higher voltage headroom and better thermal performance in the same footprint, while the TD250N12KOFHPSA1 reduces complexity and cost in unidirectional topologies but lacks integrated bidirectional switching capability.

Availability

TT250N12KOFHPSA1 is available at Aetrix Electronics and suitable for soft starter systems, industrial drive rectifiers, and static power controllers requiring stable component supply, long-life thermal cycling performance, and certified electrical isolation.

Supply support for TT250N12KOFHPSA1 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 electronics, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

This part belongs to Infineon's high-power thyristor module product line, engineered specifically for ruggedized AC power control in industrial motor drives, UPS systems, and grid-connected power conditioning equipment.

FAQ

What gate drive voltage and current are required to reliably trigger TT250N12KOFHPSA1?

The device requires a minimum gate trigger current IGT ≤ 200 mA and gate trigger voltage VGT ≤ 2 V at 25 °C with 12 V anode-cathode voltage. Recommended gate pulse energy is ≥100 mJ (e.g., 1.5 A × 100 µs), and di/dt must exceed 150 A/µs to ensure turn-on under worst-case junction temperature and dv/dt conditions.

Can TT250N12KOFHPSA1 be used in a six-pulse (B6) rectifier bridge without external snubbers?

Yes, but snubbers are recommended for dv/dt > 500 V/µs or inductive loads. With (dvD/dt)cr = 1000 V/µs and 1200 V blocking rating, the module tolerates typical line transients in industrial environments; however, RC snubbers reduce stress during commutation and improve long-term reliability in B6 configurations with large inductive filters.

How does the pre-applied TIM affect thermal interface resistance and installation process?

The factory-applied TIM reduces RthCH to ≤0.030 K/W per arm (vs. ≤0.04 K/W without TIM) and eliminates manual TIM dispensing, ensuring uniform thickness and eliminating air gaps. Installation requires only clean baseplate surfaces and specified M2 terminal torque (12 Nm); no additional thermal paste or film is needed or recommended.

What is the maximum allowable case temperature for continuous 250 A operation in a 180° conduction mode?

At ITAVM = 250 A and 180° sinusoidal conduction, the maximum allowable case temperature is 82 °C (per TD250N variant data), not 85 °C - due to thermal derating from transient impedance effects. For TT250N12KOFHPSA1, sustained operation at full rated current requires heatsink design targeting TC ≤ 82 °C to maintain Tvj ≤ 125 °C.