Infineon Technologies T1900N16TOFVTXPSA1

Overview

T1900N16TOFVTXPSA1 from Infineon Technologies is a phase-control thyristor designed for high-power AC line commutation in industrial medium-voltage converters and soft starters. It delivers 1810 A average on-state current at 85 °C case temperature, 1600–1800 V repetitive peak blocking voltage, and withstands 30.7 kA surge current (10 ms), operating reliably across –40 °C to +135 °C junction temperature.

For engineers reviewing the T1900N16TOFVTXPSA1 datasheet, T1900N16TOFVTXPSA1 pinout, T1900N16TOFVTXPSA1 application, or T1900N16TOFVTXPSA1 equivalent, key selection criteria include clamping force range (24–56 kN), two-sided thermal resistance (17 K/kW), gate trigger current ≤250 mA, and critical dv/dt rating of 1000 V/µs - all essential for robust snubberless operation in high-EMI drive rectifiers.

Technical Context

This thyristor employs a pressure-contact silicon pellet architecture with dual-sided heat dissipation capability, enabling stable conduction under 180° sinusoidal conduction angles and DC-rated operation. Its 270 µs turn-off time (tq) and 4713 × 10³ A²s I²t rating support reliable forced-commutated switching in medium-voltage inverters.

The device features asymmetric gate control characteristics optimized for line-synchronized triggering: gate non-trigger voltage remains ≤0.2 V up to 0.5×VDRM, while latching current is specified at 2500 mA under standardized diG/dt and pulse conditions - ensuring noise-immune turn-on in high-noise industrial environments.

Key Specifications

Pinout & Package

Package: TO-240AA (isolated press-pack thyristor with metal housing, 75 mm max diameter, 26.5 mm height, dual-side cooling interface).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT1900N16KOF and SKKT 1900/16 E, T1900N16TOFVTXPSA1 offers superior thermal performance (17 K/kW), higher surge current headroom (30.7 kA), and tighter gate threshold control (0.83 V V(TO)), making it optimal for high-reliability, high-energy industrial rectification where thermal management and fault ride-through are primary constraints.

Availability

T1900N16TOFVTXPSA1 is available at Aetrix Electronics and suitable for medium-voltage converters, soft starters, and drive rectifiers requiring stable component supply, long-term lifecycle assurance, and traceable production batches compliant with RoHS and REACH.

Supply support for T1900N16TOFVTXPSA1 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 semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy infrastructure markets.

This part belongs to Infineon's "Netz-Thyristor" product line, engineered specifically for high-power, line-commutated AC/DC conversion in industrial motor drives, traction systems, and grid-tied power electronics where reliability under extreme thermal and electrical stress is mandatory.

FAQ

What is the recommended clamping force range for T1900N16TOFVTXPSA1 during mounting?

The device requires a mechanical clamping force between 24 kN and 56 kN to ensure proper thermal contact, low on-state voltage, and long-term reliability. Forces below 24 kN increase RthJC and VT, risking thermal runaway; forces above 56 kN may deform the housing or damage internal silicon interfaces. Use calibrated torque-controlled presses with flat, parallel platens and verify force via load cells during production assembly.

Does T1900N16TOFVTXPSA1 support asymmetrical conduction angles in phase-control operation?

Yes - its 270 µs tq and 135 °C Tvj max allow stable operation down to 30° conduction angles in rectifier topologies. The transient thermal impedance model (ZthJC) includes validated ΔZth corrections for Θ = 30°–180°, confirming safe junction temperature rise even under highly asymmetrical current waveforms typical in dimming or partial-load soft-start profiles.

Can T1900N16TOFVTXPSA1 be used without a snubber circuit?

It can operate snubberless in applications where dv/dt does not exceed 1000 V/µs and di/dt remains below 200 A/µs, per its (dvD/dt)cr and (diT/dt)cr ratings. However, snubbers are still recommended for inductive loads with rapid current decay (e.g., transformer-coupled rectifiers) to limit recovered charge (Qr) stress and prevent commutation failure during high-di/dt turn-off transitions.

What is the gate drive requirement for reliable turn-on at maximum junction temperature?

At Tvj = 135 °C, gate trigger current must exceed 250 mA with vD = 12 V and diG/dt ≥ 1 A/µs to ensure consistent latching within 4 µs. A minimum gate pulse width of 20 µs and peak gate power ≤60 W (0.5 ms pulse) is required. Gate drive circuits must deliver ≥2 V VGT and sustain ≥10 mA IGD under worst-case blocking conditions to avoid false triggering.