Infineon Technologies TT820N16KOFXPSA1

Overview

TT820N16KOFXPSA1 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching and rectification in industrial drive systems. It delivers 820 A average on-state current (ITAVM) at TC = 85°C, 1600 V repetitive peak off-state voltage (VDRM/VRRM), and 24.8 kA non-repetitive surge current (ITSM), operating up to 135°C junction temperature. It is used in soft starters for three-phase induction motors.

For engineers reviewing the TT820N16KOFXPSA1 datasheet, TT820N16KOFXPSA1 pinout, TT820N16KOFXPSA1 application, or TT820N16KOFXPSA1 equivalent, this module's pressure-contact construction, electrically insulated baseplate, pre-applied TIM option, and dual-arm configuration are critical for thermal management and isolation in high-current static switch designs.

Technical Context

This thyristor module integrates two anti-parallel thyristor dies in a single 60 mm baseplate package, enabling bidirectional AC phase control without external reverse-blocking devices. Its gate trigger characteristics (IGT ≤ 250 mA, VGT ≤ 2 V) support standard pulse transformers or optocoupled drivers, while the critical dv/dt rating of 1000 V/µs ensures robust commutation in inductive load circuits.

The device uses Advanced Medium Power Technology (AMPT) with silicon pellets mounted via pressure contact-eliminating wire bonds and solder layers-to achieve low thermal resistance (RthJC = 0.045 K/W per arm) and high reliability under cyclic thermal stress. Its 3.0 kV RMS insulation test voltage supports Class I safety compliance in grounded-heatsink installations.

Key Specifications

Pinout & Package

TT820N16KOFXPSA1 is housed in an industrial-standard press-pack module with a 60 mm × 60 mm electrically insulated AlN ceramic baseplate. Mechanical mounting uses M1 screws (6 Nm torque); electrical terminals are M2 (12 Nm), conforming to DIN 46244 A (2.8 × 0.8 mm flat blade). The module contains two independent thyristor arms sharing a common isolated baseplate.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TD820N16KOF, TT820N16KOFXPSA1 trades 0.0225 K/W lower RthJC for 3.0 kV isolation and TIM readiness; versus TT1000N16KOF, it offers tighter gate drive compatibility at 250 mA while sacrificing 180 A headroom-ideal for cost-optimized 820 A soft starter deployments.

Availability

TT820N16KOFXPSA1 is available at Aetrix Electronics and suitable for soft starters, industrial drive rectifiers, crowbar protection circuits, and static bypass switches requiring stable component supply and long-term industrial lifecycle support.

Supply support for TT820N16KOFXPSA1 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 microcontrollers, and security solutions, with global manufacturing and R&D centers.

This part belongs to Infineon's High-Power Thyristor Module product line, engineered for ruggedized AC power control in industrial motor drives, renewable energy converters, and uninterruptible power systems.

FAQ

What is the maximum allowable junction temperature for TT820N16KOFXPSA1?

The maximum junction temperature (Tvj max) is 135°C, as specified in the thermal properties table on page 3 of the technical information document. Operation beyond this limit risks irreversible degradation of the silicon die and pressure-contact interfaces, and thermal shutdown must be implemented via case temperature monitoring at TC ≤ 110°C to maintain safe margin.

Does TT820N16KOFXPSA1 require forced air cooling?

No-forced air cooling is not mandatory. At ITAVM = 820 A and TC = 85°C, natural convection with a sufficiently sized heatsink (RthCA ≤ 0.15 K/W) meets thermal requirements per Figure 7 (page 7). However, forced air reduces RthCA by ~40%, enabling 15–20% higher current derating in confined enclosures.

Can TT820N16KOFXPSA1 be used in single-phase applications?

Yes-it supports single-phase full-wave (B2) rectification and phase-angle control. Figure 8 (page 8) provides ID vs. Ptot curves for B2 topology, showing 1200 A maximum output current at RthCA = 0.10 K/W. Gate timing must ensure symmetrical firing to avoid DC bias in transformers.

What is the creepage distance specification for this module?

The creepage distance is 19 mm, as stated in the mechanical properties section on page 3. This value satisfies IEC 61800-5-1 pollution degree 2 requirements for indoor industrial environments and permits PCB layout spacing of ≥20 mm between high-voltage terminals and grounded chassis elements.