Nexperia USA Inc. T2600N18TOFVTXPSA1

Overview

T2600N18TOFVTXPSA1 from Infineon Technologies is a phase-control thyristor designed for high-power AC line commutation in medium-voltage converters and soft starters. It delivers 2610 A average on-state current at 85 °C case temperature, 1800 V repetitive peak off-state voltage (VRRM), and 44 kA non-repetitive surge current (ITSM) with 0.85 V threshold voltage and 0.106 mΩ slope resistance.

For engineers reviewing the T2600N18TOFVTXPSA1 datasheet, T2600N18TOFVTXPSA1 pinout, T2600N18TOFVTXPSA1 application, or T2600N18TOFVTXPSA1 equivalent, key selection criteria include clamping force range (30–65 kN), two-sided thermal resistance (11.7 K/kW), gate trigger current ≤250 mA, and transient turn-off time of 250 µs under rated conditions.

Technical Context

This thyristor operates as a line-commutated, gate-controlled power switch in phase-angle controlled rectification and AC power regulation circuits. Its design supports full blocking capability at 50/60 Hz across –40 °C to +135 °C junction temperature, with critical dv/dt rating of 1000 V/µs and di/dt rating of 200 A/µs.

It features pressure-contact silicon pellet construction with auxiliary cathode terminal, enabling bidirectional heat extraction and mechanical stability under high-current transients. The device requires precise gate drive timing (max 4 µs delay) and exhibits defined on-state characteristic governed by v_T = 0.430 + 7.883×10⁻⁵i_T + 4.422×10⁻²ln(i_T) + 2.659×10⁻³(ln(i_T))².

Key Specifications

Pinout & Package

Package: Press-pack, double-side cooled, disc-type thyristor with 100 mm maximum diameter, 65 mm contact diameter, and 26.5 mm height. Requires mechanical clamping force of 30–65 kN.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT2600N18KOF and STT2600N18S1, T2600N18TOFVTXPSA1 offers superior thermal performance under two-sided cooling (11.7 K/kW), integrated auxiliary cathode for robust commutation, and verified 30–65 kN clamping compatibility-making it optimal for modular MV converter stacks requiring field-serviceable press-pack assemblies.

Availability

T2600N18TOFVTXPSA1 is available at Aetrix Electronics and suitable for medium-voltage converters, soft starters, and grid-tied rectifiers requiring stable component supply, long-life field replacement, and traceable high-reliability power semiconductors.

Supply support for T2600N18TOFVTXPSA1 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 device belongs to Infineon's "Netz-Thyristor" product line, engineered specifically for high-power, line-commutated AC power control in industrial energy conversion systems operating up to 6.6 kV.

FAQ

What is the recommended clamping force range for T2600N18TOFVTXPSA1?

The device requires mechanical clamping force between 30 kN and 65 kN to ensure proper thermal contact, low contact resistance, and structural integrity under thermal cycling. Force below 30 kN risks increased RthJC and hot-spot formation; above 65 kN may deform the copper housing or damage internal Si pellet bonding.

Does T2600N18TOFVTXPSA1 support series connection without dynamic voltage sharing networks?

No. While its 1000 V/µs (dv/dt)cr and 200 A/µs (di/dt)cr support robust static matching, series operation requires active dynamic voltage balancing-especially due to parameter spread in tq (250 µs typ.) and recovery charge Qr-making external snubbers or gate-drive skewing mandatory for reliable string use.

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature is 85 °C for rated ITAVM = 2610 A under two-sided cooling. At 55 °C case temperature, ITAVM rises to 3580 A (θ = 180° sinusoidal conduction). Exceeding 85 °C case temperature violates the thermal derating curve and risks accelerated aging or thermal runaway.

Is auxiliary cathode (terminal 5) required for basic operation?

Terminal 5 is not required for basic single-device operation but is essential in series-connected strings or high-di/dt commutation circuits. It provides a low-inductance gate return path that stabilizes turn-off behavior and reduces risk of false retriggering during recovery, particularly in medium-voltage converters with fast line reversal.