Infineon Technologies T2810N18TOFVTXPSA1

Overview

T2810N18TOFVTXPSA1 from Semikron is a high-power, phase-control thyristor designed for industrial AC power regulation in medium- to high-voltage line-commutated converters. It delivers 2810 A average on-state current at 85 °C case temperature, supports 1800 V repetitive peak off-state voltage (VDRM/VRRM), and withstands 58 kA non-repetitive surge current - enabling use in 3-phase rectifiers, motor soft-starters, and static VAR compensators.

For engineers reviewing the T2810N18TOFVTXPSA1 datasheet, T2810N18TOFVTXPSA1 pinout, T2810N18TOFVTXPSA1 application, or T2810N18TOFVTXPSA1 equivalent, key selection criteria include verified gate trigger current (≤300 mA), critical dv/dt rating (1000 V/µs), junction-to-case thermal resistance (0.0078 °C/W two-sided), and validated 300 µs turn-off time under commutation conditions.

Technical Context

This thyristor operates as a line-commutated, gate-controlled semiconductor switch in phase-angle controlled AC circuits. Its design centers on robust latching (1500 mA) and holding (300 mA) currents, low on-state slope resistance (0.112 mΩ), and precise threshold voltage (0.90 V) - ensuring reliable turn-on across wide temperature ranges (−40 °C to +125 °C).

Thermal performance is defined by dual-sided cooling capability and transient thermal impedance modeling (ZthJC analytical elements provided). The device requires external forced commutation or natural AC zero-crossing for turn-off, with circuit commutated turn-off time (tq) specified at 300 µs under standardized test conditions (vRM = 100 V, dvD/dt = 20 V/µs).

Key Specifications

Pinout & Package

Package: Press-pack, two-sided cooled, stud-mount thyristor with isolated anode/cathode terminals and flat gate contact. Mechanical interface per Semikron Annex (Page 3): clamping force 42–95 kN, creepage distance 25 mm, weight ≈1200 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT1600N18KOF and T3200N18TOF, the T2810N18TOFVTXPSA1 occupies the mid-power tier - offering optimal balance of current rating, thermal resistance, and gate drive simplicity for 2–3 MW industrial converters without over-engineering.

Availability

T2810N18TOFVTXPSA1 is available at Aetrix Electronics and suitable for industrial motor soft-starters, medium-voltage rectifier stacks, and static VAR compensators requiring stable component supply, long-life field deployment, and traceable manufacturing origin.

Supply support for T2810N18TOFVTXPSA1 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 electronics specialist founded in 1951, focused on high-reliability power semiconductors and integrated power modules for industrial, energy, and traction applications.

This thyristor belongs to Semikron's "Netz-Thyristor" series - engineered specifically for ruggedized, line-commutated AC power control in utility-scale and heavy-industrial environments where long-term thermal stability and surge resilience are mandatory.

FAQ

What is the maximum allowable junction temperature for T2810N18TOFVTXPSA1?

The absolute maximum junction temperature (Tvj max) is 125 °C, as specified in the datasheet's thermal properties section. Operation beyond this limit risks irreversible degradation of the silicon die and bond interfaces. Thermal design must ensure Tvj remains ≤125 °C under worst-case ITAV, ambient, and cooling conditions - verified via RthJC (0.0078 °C/W two-sided) and transient ZthJC models.

Does T2810N18TOFVTXPSA1 require a heatsink? If so, what type?

Yes - it mandates a two-sided, actively cooled heatsink with mechanical clamping force between 42 kN and 95 kN. The press-pack construction relies on direct metal-to-metal thermal contact at both anode and cathode surfaces. Liquid-cooled or forced-air heatsinks with precision-machined mounting surfaces are standard; single-sided cooling is not supported per datasheet RthJC ratings.

Can T2810N18TOFVTXPSA1 be used in DC applications?

No - it is a line-commutated thyristor requiring natural current zero-crossings or external forced commutation to turn off. In pure DC circuits, it lacks intrinsic turn-off capability and will latch on after triggering unless paired with a commutation circuit (e.g., LC snubber or auxiliary thyristor). Its datasheet parameters (e.g., tq, dv/dt, di/dt) assume AC or pulsed operation with defined commutation conditions.

What gate drive voltage and current are required for reliable turn-on?

A minimum gate trigger current of ≤300 mA at ≤2.5 V (VGT max) is required at 25 °C with 12 V anode-cathode voltage. Gate pulse width must exceed 20 µs, and peak gate power must stay within PGM limits (e.g., 40 W for 1 ms). The gate characteristic curve (vG vs. iG) shows strong temperature dependence - colder junctions require higher iG, necessitating derated drive at −40 °C.