Infineon Technologies TT250N14KOFHPSA1

Overview

TT250N14KOFHPSA1 from Infineon Technologies is a phase-control thyristor module with pressure-contact construction, rated for 1400 V repetitive peak off-state voltage (VDRM/VRRM), 250 A average on-state current at TC = 85 °C, and 9100 A non-repetitive surge current (ITSM). It features electrically insulated baseplate, pre-applied thermal interface material (TIM), and is designed for high-reliability industrial power control in soft starters and static switches.

For engineers reviewing the TT250N14KOFHPSA1 datasheet, TT250N14KOFHPSA1 pinout, TT250N14KOFHPSA1 application, or TT250N14KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.124 K/W), critical dv/dt rating (1000 V/µs), gate trigger current (≤200 mA), and isolation test voltage (3.6 kV RMS/1 sec).

Technical Context

This dual-thyristor module implements line-commutated phase-angle control in AC power systems. Its pressure-contact die attachment ensures stable thermal performance under high di/dt (150 A/µs) and dv/dt (1000 V/µs) transients, with turn-off time (tq) of 250 µs at full-rated current and 125 °C junction temperature.

The module integrates two anti-parallel thyristor arms in an industrial-standard package with basic insulation (IEC 61140 Class 1) and creepage distance of 17 mm. Gate drive requirements are defined by VGT ≤ 2 V and IGT ≤ 200 mA at 25 °C, with holding current (IH) ≤ 300 mA and latching current (IL) ≤ 1200 mA.

Key Specifications

Pinout & Package

TT250N14KOFHPSA1 uses an industrial-standard press-pack module package with electrically insulated AlN ceramic baseplate, 50 mm × 50 mm footprint, and M1 (5 Nm) mechanical mounting screws. Terminals conform to DIN 46244 A (2.8 × 0.8 mm) for gate and main current paths.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT250N14KOFHPSA1, the TT250N16KOFHPSA1 offers higher blocking voltage at slight thermal penalty, while the TD250N14KOFHPSA1 reduces complexity and cost in unidirectional topologies but requires external reverse-path protection.

Availability

TT250N14KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, static switches, and crowbar protection systems requiring stable component supply, long-lifecycle support, and certified isolation performance in industrial environments.

Supply support for TT250N14KOFHPSA1 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 security 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 for ruggedized industrial AC power control-specifically targeting applications demanding high surge immunity, long thermal cycle life, and reinforced electrical isolation.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is not explicitly specified as a standalone limit; instead, the device is rated for ITAVM = 250 A at TC = 85 °C. Operation above this temperature requires derating per the TC = f(ITAVM) curve on page 7 of the datasheet, with absolute maximum junction temperature (Tvj max) fixed at 125 °C.

Can TT250N14KOFHPSA1 be used in a single-phase full-wave rectifier?

Yes-it is configured as two anti-parallel thyristor arms, making it directly suitable for single-phase full-wave (B2) rectifier topologies. The module supports up to 500 A peak output current in B2 configuration with appropriate heatsinking and RthCA ≤ 0.20 K/W, as shown in Figure 8 of the datasheet.

Is the pre-applied TIM compatible with standard thermal greases or pastes?

No-the pre-applied TIM is a proprietary, cured silicone-based interface material optimized for long-term adhesion and thermal stability up to 125 °C. Adding conventional thermal paste risks delamination, air gaps, and reduced reliability; Infineon specifies direct mounting to flat, clean heatsinks without additional interface materials.

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

At 25 °C, gate trigger voltage must exceed 2 V and gate trigger current must reach ≥200 mA within 20 µs to ensure latching. For robust operation across temperature, gate drivers should deliver ≥1 A peak current with ≥10 V open-circuit voltage and diG/dt ≥ 1 A/µs, as validated in the vG = f(iG) characteristic on page 6.