Infineon Technologies TD250N16KOFHPSA1

Overview

TD250N16KOFHPSA1 from Infineon Technologies is a pressure-contact thyristor module designed for phase-controlled AC power regulation in industrial drive rectifiers and soft starters. It delivers 250 A average on-state current at TC = 85 °C, supports 1600 V repetitive peak off-state voltage (VDRM/VRRM), and features electrically insulated baseplate with pre-applied thermal interface material (TIM) for enhanced thermal coupling in high-reliability crowbar and static switch applications.

For engineers reviewing the TD250N16KOFHPSA1 datasheet, TD250N16KOFHPSA1 pinout, TD250N16KOFHPSA1 application, or TD250N16KOFHPSA1 equivalent, this module's validated junction-to-case thermal resistance (0.124 K/W), critical dv/dt rating (1000 V/µs), and gate trigger characteristics (IGT ≤ 200 mA, VGT ≤ 2 V) are essential for snubberless design, forced-commutated turn-off timing, and gate drive sizing in medium-voltage motor control systems.

Technical Context

This double-sided, dual-thyristor module implements a symmetrical two-arm configuration for full-wave phase control in B2 (two-pulse) and B6 (six-pulse) bridge topologies. Its pressure-contact die attachment ensures stable thermal performance under repetitive surge currents up to 9100 A (10 ms), while the AlN-based internal insulation provides 3.6 kV RMS isolation for safe operation in grounded-heatsink industrial environments.

The device operates with a maximum junction temperature of 125 °C and exhibits a typical circuit commutated turn-off time (tq) of 250 µs at rated conditions - enabling reliable forced commutation in UPS rectifiers and battery charger inverters where controlled current interruption is required without auxiliary snubbers.

Key Specifications

Pinout & Package

TD250N16KOFHPSA1 uses an industrial-standard press-pack module package with electrically insulated baseplate (AlN ceramic), 50 mm × 70 mm footprint, and M2 (12 Nm) terminal torque for main power terminals. The module contains two independent thyristor arms sharing a common isolated baseplate.

Key Features

Applications

Availability

TD250N16KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, drive rectifiers, and crowbar protection systems requiring stable component supply across multi-year industrial equipment lifecycles.

Supply support for TD250N16KOFHPSA1 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 TT/TD series of high-power thyristor modules, engineered specifically for ruggedized phase-control applications in energy infrastructure, traction systems, and industrial automation where reliability under thermal and electrical stress is mission-critical.

FAQ

What is the difference between TD250N16KOFHPSA1 and TT250N16KOFHPSA1?

TD250N16KOFHPSA1 is the dual-thyristor (two-arm) version with independent gate terminals (G1/G2) and shared insulated baseplate, while TT250N16KOFHPSA1 is the single-thyristor (one-arm) variant. The 'D' prefix denotes dual-arm configuration required for full-bridge rectification and bidirectional switching, whereas 'T' indicates single-arm use in half-controlled topologies.

Can TD250N16KOFHPSA1 operate without external snubbers?

Yes - its (dvD/dt)cr rating of 1000 V/µs and gate-triggered turn-on behavior allow snubberless operation in 50/60 Hz line-frequency applications. However, snubbers remain recommended for high-di/dt loads (>150 A/µs) or when used in high-frequency PWM-assisted commutation circuits to suppress voltage overshoot.

What is the purpose of the pre-applied TIM on the baseplate?

The pre-applied thermal interface material eliminates manual grease application, reduces assembly variability, and guarantees RthCH ≤ 0.030 K/W per arm when mounted with 12 Nm torque on flat, clean heatsinks. It is qualified for continuous operation from –40 °C to +125 °C and does not require rework or replacement during field service.

How is gate drive isolation implemented for TD250N16KOFHPSA1?

Each gate (G1/G2) must be driven relative to its respective cathode (K1/K2), as the arms are electrically isolated. Isolated gate drivers with ≥3.6 kV RMS reinforcement (e.g., Infineon's 1ED34xx series) are required. Direct connection to a common controller ground is unsafe; transformer- or capacitive-coupled gate drive with individual floating supplies is mandatory.