Infineon Technologies TT215N18KOFHPSA1

Overview

TT215N18KOFHPSA1 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching in industrial power electronics. It features 1800 V repetitive peak off-state voltage (VDRM/VRRM), 215 A average on-state current at 85 °C case temperature (ITAVM), and 7000 A non-repetitive surge current (ITSM). Its pressure-contact construction, electrically insulated baseplate, and pre-applied thermal interface material support robust operation in soft starters and static switches.

For engineers reviewing the TT215N18KOFHPSA1 datasheet, TT215N18KOFHPSA1 pinout, TT215N18KOFHPSA1 application, or TT215N18KOFHPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.124 K/W), threshold voltage (0.95 V), slope resistance (0.92 mΩ), critical dv/dt rating (1000 V/µs), and gate trigger requirements (200 mA IGT, 2.0 V VGT).

Technical Context

This dual-thyristor module implements phase-angle control in AC power circuits using pressure-contact silicon die mounted on an electrically insulated AlN-ceramic baseplate. It supports full-wave rectification and crowbar protection with symmetrical forward/reverse blocking capability up to 2200 V (VRRM) and commutated turn-off time of 300 µs at rated conditions.

Thermal management relies on low RthJC (0.124 K/W per module, DC) and optional pre-applied TIM to reduce RthCH to 0.015 K/W. Gate drive requires precise timing (max 4 µs delay) and compliance with critical di/dt (100 A/µs) and dv/dt (1000 V/µs) limits to prevent false triggering or latch-up.

Key Specifications

Pinout & Package

Package: Industrial-standard press-pack module with electrically insulated AlN ceramic baseplate, 50 mm × 50 mm footprint, M1 mounting screws (5 Nm), and M2 terminal screws (12 Nm). Weight: 800 g. Creepage distance: 17 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT215N18KOFHPSA1, the TT215N22KOFHPSA1 offers higher blocking voltage without thermal or mechanical trade-offs, while the TD215N22KOFHPSA1 reduces per-unit cost in single-arm applications but doubles component count for dual-arm functions.

Availability

TT215N18KOFHPSA1 is available at Aetrix Electronics and suitable for soft starters, static power controllers, crowbar protection circuits, and rectifiers for industrial drives requiring stable component supply and long-term lifecycle support.

Supply support for TT215N18KOFHPSA1 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 R&D infrastructure.

This part belongs to Infineon's "Netz-Thyristor-Modul" product line, engineered for high-reliability, medium-to-high power AC control in industrial automation, energy conversion, and grid infrastructure applications.

FAQ

What is the maximum allowable junction temperature for TT215N18KOFHPSA1?

The maximum junction temperature (Tvj max) is 125 °C, as specified in the Infineon technical information document revision 3.1. Operation beyond this temperature risks irreversible degradation of the silicon die and pressure-contact interfaces. Thermal design must ensure that under worst-case ITAVM and ambient conditions, junction temperature remains below this limit using the provided ZthJC transient thermal impedance model.

Can TT215N18KOFHPSA1 be used in a six-pulse bridge rectifier configuration?

Yes - the dual-thyristor architecture supports B6 six-pulse bridge operation. Each arm handles one phase leg; the module's 215 A ITAVM rating applies per arm. The datasheet provides derating curves for ITAVM versus conduction angle and case temperature, confirming suitability for 600 A total DC output in standard B6 layouts with appropriate heatsinking and forced-air cooling.

Does TT215N18KOFHPSA1 require external gate resistors or snubbers?

No external gate resistors are mandatory, but a series resistor (typically 10–50 Ω) is recommended to limit peak gate current and suppress ringing. Snubbers (RC networks across A–K) are strongly advised for inductive loads to limit dv/dt stress, especially given the 1000 V/µs (dv/dt)cr rating - exceeding this may cause false triggering even with proper gate drive.

How does the pre-applied TIM affect thermal performance and reworkability?

The pre-applied thermal interface material reduces RthCH from 0.020 K/W to 0.015 K/W per module, improving thermal coupling without manual application. However, it is not designed for multiple rework cycles; removal degrades adhesion and void-filling properties. For prototyping or frequent replacement, Infineon recommends using the non-TIM variant (TT215N18KOFHPSA0) with user-applied grease or phase-change pads.