Infineon Technologies DT61N16KOFKHPSA1

Overview

DT61N16KOFKHPSA1 from Semikron is a phase-control thyristor module rated for 1600 V repetitive peak off-state voltage (VDRM/VRRM), 120 A RMS on-state current (ITRMSM), and 76 A average on-state current at TC = 76°C. It features dual thyristor arms in a press-pack configuration with AlN ceramic isolation, designed for industrial AC power control in medium-voltage motor drives and DC power supplies.

For engineers reviewing the DT61N16KOFKHPSA1 datasheet, DT61N16KOFKHPSA1 pinout, DT61N16KOFKHPSA1 application, or DT61N16KOFKHPSA1 equivalent, key selection criteria include critical dv/dt rating (1000 V/µs), gate trigger current (≤120 mA), junction-to-case thermal resistance (0.52 °C/W per arm), and UL E83336 listing for safety-compliant system integration.

Technical Context

This device implements a two-arm, bidirectional phase-controlled thyristor topology optimized for line-commutated AC-DC conversion. Each arm supports 1600 V blocking and handles up to 120 A RMS conduction with 150 A/µs critical di/dt capability and 1000 V/µs critical dv/dt immunity.

Thermal performance is defined by transient junction-to-case impedance (ZthJC) with analytical RC network parameters (e.g., R₁ = 0.0218 °C/W, τ₁ = 0.945 ms), enabling precise loss and temperature modeling under sinusoidal or rectangular current waveforms with conduction angles from 30° to 180°.

Key Specifications

Pinout & Package

DT61N16KOFKHPSA1 uses a press-pack module package with isolated copper baseplate, AlN ceramic internal insulation, and M1 mechanical mounting (4 Nm ±15%). Terminals are arranged as dual-arm thyristor pair: Arm 1 (Anode 1 / Cathode 1) and Arm 2 (Anode 2 / Cathode 2), plus common gate control terminals G1 and G2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 105/16E and T1633N16TOF, DT61N16KOFKHPSA1 delivers superior thermal reliability via AlN isolation and UL certification, while maintaining strict 120 A RMS and 1000 V/µs dv/dt performance-making it optimal for safety-critical, high-durability AC power control.

Availability

DT61N16KOFKHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, DC power supplies, medium-voltage UPS systems, and reactive power compensation requiring stable component supply and long-term lifecycle continuity.

Supply support for DT61N16KOFKHPSA1 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 semiconductor manufacturer specializing in high-reliability modules for industrial, energy, and traction applications since 1951.

This part belongs to Semikron's Netz-Thyristor-Modul series, engineered specifically for robust, high-power AC phase control in harsh environments-including motor drives, welding, and power conditioning-where press-pack construction and certified isolation are mandatory.

FAQ

What is the maximum allowable junction temperature for DT61N16KOFKHPSA1?

The maximum junction temperature (Tvj max) is 125°C, as specified in the thermal properties section of the official datasheet. This limit applies under all operating conditions, including repetitive and non-repetitive surge events, and must be maintained via proper heatsinking with RthCH ≤ 0.16 °C/W per arm and ambient temperature control.

Does DT61N16KOFKHPSA1 require external snubbers for typical B6 bridge operation?

No-its 1000 V/µs critical dv/dt rating allows snubberless operation in standard six-pulse bridge circuits with typical line inductance and commutation characteristics. However, snubbers remain recommended for systems with fast-rising transients exceeding this rating or where electromagnetic compatibility mandates additional suppression.

How is gate drive isolation implemented for DT61N16KOFKHPSA1?

Gate terminals G1 and G2 are electrically isolated from main terminals and baseplate per DIN 46244 A standard, with creepage distance ≥12.5 mm and reinforced insulation validated by 3.0 kV RMS (1 sec) isolation testing. No additional galvanic isolation is required if gate drivers meet IEC 61800-5-1 reinforced insulation requirements.

Can DT61N16KOFKHPSA1 be used in anti-parallel configuration for AC output control?

Yes-its dual-arm architecture supports anti-parallel connection (A1–K2 and A2–K1 cross-linked) to form a bidirectional AC switch. This configuration is validated for applications like solid-state relays and static VAR compensators, provided gate timing avoids shoot-through and thermal limits are observed per arm.