Infineon Technologies TT92N14KOFHPSA1

Overview

TT92N14KOFHPSA1 from Semikron is a phase-control thyristor module configured as a single-phase, anti-parallel pair (B2 topology) for AC power regulation. It delivers 92 A average on-state current at TC = 85°C, supports 1400 V repetitive peak off-state voltage (VDRM/VRRM), and withstands 2050 A non-repetitive surge current (10 ms). It is used in industrial AC motor speed controllers and resistive heating systems requiring precise half-wave or full-wave phase-angle control.

For engineers reviewing the TT92N14KOFHPSA1 datasheet, TT92N14KOFHPSA1 pinout, TT92N14KOFHPSA1 application, or TT92N14KOFHPSA1 equivalent, key selection criteria include its 150 µs circuit-commutated turn-off time (tq), 1000 V/µs critical dv/dt rating, 1.62 V max on-state voltage at 300 A, and pressure-contact Si pellet construction with AlN isolation.

Technical Context

This thyristor module implements a dual-die, anti-parallel configuration enabling bidirectional conduction without external reverse-blocking components. Its gate trigger characteristics-120 mA max IGT and 1.4 V max VGT at 25°C-are optimized for standard pulse transformers or opto-triac drivers in phase-fired controllers.

Thermal design relies on validated transient thermal impedance ZthJC (per arm), with analytical R–τ elements supporting dynamic loss calculation under sinusoidal or rectangular conduction angles (Θ = 30°–180°). The module's 0.370 °C/W max RthJC (per arm, Θ = 180° sin) and 0.10 °C/W max RthCH require mechanical mounting torque of 4 Nm (±10% for terminals, ±15% for housing).

Key Specifications

Pinout & Package

TT92N14KOFHPSA1 uses a press-pack, double-sided cooled module package with isolated AlN ceramic baseplate. Dimensions and terminal layout conform to Semikron's standard "FHPSA1" mechanical outline (see datasheet page 3), featuring two main power terminals (A1/K2 and A2/K1) and two isolated gate terminals (G1 and G2) per thyristor die.

Key Features

Applications

Availability

TT92N14KOFHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, resistive heating systems, and welding equipment requiring stable component supply and long-term production continuity.

Supply support for TT92N14KOFHPSA1 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 and renewable energy applications since 1951.

The TT92N series belongs to Semikron's Netz-Thyristor-Modul family, engineered for rugged phase-control duty in AC power conversion where thermal cycling, voltage transients, and long service life are critical.

FAQ

What is the recommended gate drive circuit for TT92N14KOFHPSA1?

A pulse transformer with ≥0.6 A peak output and ≥0.6 A/µs di/dt capability is recommended, delivering 12–24 V pulses of 20–100 µs duration. Gate resistors must limit IGT to ≤120 mA while maintaining >1.4 V VGT margin; snubbers are optional due to the device's 1000 V/µs (dv/dt)cr rating.

Can TT92N14KOFHPSA1 be used in a six-pulse (B6) configuration?

No - TT92N14KOFHPSA1 is a single-phase anti-parallel module (B2 topology) with two main terminals and two isolated gates. For B6 bridge applications, three separate TT92N14KOFHPSA1 modules would be required (one per phase leg), but Semikron offers dedicated three-phase modules (e.g., DT92N series) better suited for that topology.

What is the maximum heatsink thermal resistance allowed for continuous 92 A operation?

At TC = 85°C and Tvj max = 130°C, total thermal resistance (RthJC + RthCH + RthHA) must not exceed 0.50 °C/W. With RthJC = 0.370 °C/W and RthCH = 0.10 °C/W, RthHA must be ≤0.03 °C/W - achievable only with forced-air cooling (e.g., Papst 4650N fan) on a KM14 heatsink.

Does TT92N14KOFHPSA1 require gate-to-cathode resistors for safe operation?

Yes - a 10–22 Ω gate-cathode resistor (non-inductive, ≥2 W) is mandatory to prevent false triggering from dv/dt-induced gate current. This resistor ensures IGD remains below 5.0 mA at Tvj max and suppresses oscillation during high-di/dt commutation events.