Infineon Technologies TZ500N14KOFHPSA1

Overview

TZ500N14KOFHPSA1 from Semikron is a phase-control thyristor module rated for 500 A average on-state current (ITAVM) at TC = 85°C, 1400 V repetitive peak off-state voltage (VDRM/VRRM), and 17 kA non-repetitive surge current (ITSM). It features pressure-contact silicon pellets, aluminum nitride (AlN) internal isolation, and is designed for high-power AC line-commutated rectification in industrial motor drives and DC power supplies.

For engineers reviewing the TZ500N14KOFHPSA1 datasheet, TZ500N14KOFHPSA1 pinout, TZ500N14KOFHPSA1 application, or TZ500N14KOFHPSA1 equivalent, key selection criteria include its 125°C maximum junction temperature, 0.065°C/W junction-to-case thermal resistance, 200 A/µs critical di/dt rating, and compatibility with B2/B6 bridge configurations under natural or forced cooling.

Technical Context

This dual-thyristor module operates in line-commutated mode with gate-controlled turn-on and natural commutation via AC zero-crossing. Its design supports bidirectional blocking (VDRM/VRRM = 1400 V), fast gate triggering (tgd ≤ 4 µs), and robust transient immunity (dv/dt critical = 1000 V/µs at Tvj max).

Thermal performance is defined by analytical ZthJC and ZthCA models for sinusoidal and rectangular conduction angles (Θ = 0°–180°), enabling precise loss and case-temperature prediction in B2 two-pulse and B6 six-pulse bridge topologies with heatsink RthCA as low as 0.015°C/W under forced cooling.

Key Specifications

Pinout & Package

Package: Press-pack module with isolated AlN ceramic baseplate, M1 mechanical mounting (5 Nm ±15%), M2 electrical terminals (12 Nm ±10%), DIN 46244 A control terminals (2.8 × 0.8 mm), 900 g typical weight, 15 mm creepage distance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 500/14, TZ500N14KOFHPSA1 delivers 50 A higher continuous current and 0.007°C/W lower thermal resistance; versus TZ500N16KOFHPSA1, it trades 200 V blocking headroom for optimized cost in standard 690 VAC infrastructure.

Availability

TZ500N14KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, DC power supplies, uninterruptible power systems, and reactive power compensation requiring stable component supply across multi-year production cycles.

Supply support for TZ500N14KOFHPSA1 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, energy, and traction applications since 1951.

This part belongs to the TZ500N series of press-pack thyristor modules engineered for high-power, line-commutated AC/DC conversion in harsh environments with extended thermal cycling life.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature is not fixed but depends on ITAVM and conduction angle. At ITAVM = 500 A and Θ = 180° (full conduction), TC reaches 85°C under natural cooling with RthCA = 0.060°C/W. For forced cooling (RthCA = 0.015°C/W), TC remains ≤ 70°C at same load, staying within the -40°C to +125°C operating range.

Does this module require external snubbers?

Yes-snubbers are required to limit dv/dt stress during turn-off. With (dvD/dt)cr = 1000 V/µs, a typical RC snubber (e.g., 0.1 µF + 22 Ω) is needed across each thyristor arm when operating in circuits with fast voltage transients, especially in B6 bridges with inductive loads.

Can TZ500N14KOFHPSA1 be used in asymmetrical half-controlled bridges?

Yes-it supports asymmetrical configurations where only one thyristor arm is controlled per AC half-cycle. The independent gate terminals (G1/K1 and G2/K2) and isolated arms allow flexible firing sequencing, though thermal balance must be verified using the provided ZthCA models for partial conduction angles.

What is the recommended gate drive voltage and current profile?

A minimum gate trigger voltage of 2.2 V (VGT max) and current of 250 mA (IGT max) is required at 25°C. For reliable turn-on across temperature, use ≥5 V/500 mA pulses with 20 µs minimum width and diG/dt ≥1 A/µs, referenced to respective cathode (K1 or K2) to avoid false triggering.