Infineon Technologies TT285N16KOFHPSA2

Overview

TT285N16KOFHPSA2 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching and rectification in industrial drive systems. It features 1600 V repetitive peak off-state voltage (VDRM/VRRM), 285 A average on-state current (ITAVM) at TC = 93 °C, 12.5 kA non-repetitive surge current (ITSM), and electrically insulated baseplate construction with pressure-contact die attachment. It is used in soft starters, static switches, and UPS rectifiers where robust thermal performance and high reliability under cyclic load are required.

For engineers reviewing the TT285N16KOFHPSA2 datasheet, TT285N16KOFHPSA2 pinout, TT285N16KOFHPSA2 application, or TT285N16KOFHPSA2 equivalent, key selection criteria include junction-to-case thermal resistance (0.106 K/W), critical dv/dt rating (1000 V/µs), gate trigger current (≤200 mA), and isolation test voltage (3.6 kV RMS/1 sec), all validated for industrial medium-power control applications.

Technical Context

This thyristor module implements a dual-arm, press-pack structure with silicon pellets mounted via pressure-contact technology-eliminating wire bonds and solder layers to enhance thermal cycling endurance and power-cycle reliability. Its 130 °C maximum junction temperature and 0.106 K/W RthJC enable sustained operation in high-temperature ambient environments typical of motor drive cabinets and battery charger enclosures.

The device supports both half-wave and full-wave phase-controlled conduction with verified commutation turn-off time (tq = 250 µs typ.) and critical di/dt capability (250 A/µs). Gate triggering is optimized for standard 12 V, 1 A pulse sources with defined latching (IL ≤ 1200 mA) and holding (IH ≤ 300 mA) thresholds, ensuring stable firing across wide temperature ranges (–40 °C to +130 °C).

Key Specifications

Pinout & Package

TT285N16KOFHPSA2 uses an industrial-standard press-pack module package with electrically insulated aluminum nitride (AlN) baseplate and 50 mm × 70 mm footprint. Terminals are M2 screw-type (12 Nm torque) for main current paths and DIN 46244 A (2.8 × 0.8 mm) for gate control connections.

Key Features

Applications

Availability

TT285N16KOFHPSA2 is available at Aetrix Electronics and suitable for soft starter systems, UPS rectifier stages, and battery charger rectifiers requiring stable component supply, long-lifecycle support, and traceable industrial-grade sourcing.

Supply support for TT285N16KOFHPSA2 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 semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy applications.

TT285N16KOFHPSA2 belongs to Infineon's Advanced Medium Power Thyristor (AMPT) product line, engineered specifically for high-reliability, medium-power AC power control in motor drives, industrial rectification, and static switching systems.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature (TC) is +130 °C, as specified in the thermal characteristics table. This value corresponds to the upper limit of the operating temperature range (–40 °C to +130 °C) and aligns with the 130 °C maximum junction temperature (Tvj max) when combined with the 0.106 K/W RthJC. Derating curves in the datasheet confirm 285 A ITAVM is valid only when TC is maintained at or below 93 °C under standard test conditions.

Does TT285N16KOFHPSA2 require a heatsink? If so, what thermal resistance is recommended?

Yes, a heatsink is mandatory. With 0.106 K/W RthJC and up to 520 W total conduction loss at full load, the required RthCA (case-to-ambient) depends on ambient temperature and allowable case rise. For TA = 50 °C and TC ≤ 93 °C, RthCA must be ≤ 0.15 K/W. The datasheet provides derating curves showing that RthCA = 0.12 K/W supports 285 A ITAVM in B6 configuration at 180° conduction angle.

Can TT285N16KOFHPSA2 be used in parallel configurations?

No-this module is not designed for paralleling. Its pressure-contact construction and lack of integrated current-sharing features (e.g., matched VTO, dynamic balancing networks) make parallel operation unreliable. The datasheet specifies ratings per arm and explicitly recommends single-module use per phase leg. For higher current needs, Infineon offers larger-rated variants like TT450N16KOFHPSA2.

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

A minimum gate trigger voltage of 2 V and current of 1 A (with di/dt ≥ 1 A/µs) is required to ensure latching at 1200 mA IL max. Standard gate drivers delivering 12 V, 2 A pulses for ≥20 µs meet this requirement. The datasheet specifies IGT ≤ 200 mA and VGT ≤ 2 V at 25 °C, but actual drive must exceed latching threshold-not just trigger threshold-to guarantee turn-on across –40 °C to +130 °C.