Infineon Technologies TT61N16KOFKHPSA1

Overview

TT61N16KOFKHPSA1 from Semikron is a phase-control thyristor module with dual anti-parallel SCR configuration in a press-pack package, 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 delivers 1.9 V max on-state voltage at 300 A and supports industrial AC power control in medium-voltage motor drives and DC power supplies.

For engineers reviewing the TT61N16KOFKHPSA1 datasheet, TT61N16KOFKHPSA1 pinout, TT61N16KOFKHPSA1 application, or TT61N16KOFKHPSA1 equivalent, key selection criteria include gate trigger current (≤120 mA), critical dv/dt rating (1000 V/µs), commutated turn-off time (120 µs typ), and thermal resistance (0.25 °C/W junction-to-case per arm).

Technical Context

This thyristor module implements a two-arm, anti-parallel SCR topology for bidirectional AC phase control without external reverse-blocking diodes. Its pressure-contact silicon pellet design with AlN ceramic isolation enables high-reliability operation up to 125°C junction temperature and supports forced-air or natural cooling via heatsink mounting.

The device features gate-controlled turn-on with latching current ≤620 mA and holding current ≤200 mA, while its 150 A/µs critical di/dt and 1000 V/µs critical dv/dt ensure robust immunity against false triggering under transient line conditions in industrial rectifier and soft-start circuits.

Key Specifications

Pinout & Package

TT61N16KOFKHPSA1 uses a press-pack module package with isolated copper baseplate, AlN internal insulation, and M1 mechanical mounting (4 Nm torque). Terminals are arranged for dual-arm anti-parallel configuration with separate anode/cathode pairs and isolated gate connections.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 105/16 E and TT105N16KOFHPSA1, TT61N16KOFKHPSA1 offers optimal balance of 120 A RMS rating, 0.25 °C/W thermal resistance, and proven field reliability in B2/B6 bridge configurations-making it preferred for new industrial drive and power supply designs requiring margin and longevity.

Availability

TT61N16KOFKHPSA1 is available at Aetrix Electronics and suitable for industrial motor soft-start, medium-voltage UPS inverters, and DC power supply rectification requiring stable component supply and long lifecycle support.

Supply support for TT61N16KOFKHPSA1 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 TT61N series of press-pack thyristor modules, engineered for ruggedized AC phase control in high-power converters where solder-free construction and ceramic isolation are mandatory.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature (TC op) is +125°C, verified per datasheet Section "Thermische Eigenschaften". At this temperature, the device sustains 76 A average on-state current (ITAVM) with no derating, provided thermal resistance to ambient (RthCA) remains within design limits and gate drive meets IGT ≤ 120 mA specifications.

Does TT61N16KOFKHPSA1 require a heatsink? If so, what is the recommended mounting torque?

Yes, a heatsink is mandatory: thermal resistance junction-to-case is 0.25 °C/W per arm, and power dissipation exceeds 100 W at full load. Mechanical terminals require M1 mounting with 4 Nm torque (±15% tolerance), as specified in the "Mechanische Eigenschaften" section of the datasheet, to ensure uniform pressure contact and thermal interface integrity.

Can this module be used in a single-phase full-wave rectifier without external diodes?

Yes-its dual anti-parallel SCR configuration provides inherent bidirectional conduction, enabling direct use in single-phase full-wave (B2) rectifiers. No external diodes are needed; gate signals must be synchronized to alternate arms per half-cycle, with minimum conduction angle governed by tq = 120 µs and line frequency.

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

At Tvj = 125°C, gate trigger current must exceed 120 mA (IGT max), with pulse width ≥20 µs and di/dt ≥1 A/µs. The gate non-trigger current (IGD) remains ≤2.5 mA at vD = 0.5 VDRM, confirming noise immunity. A 15 V/1 A gate driver with <3 µs delay (tgd max) is recommended per datasheet Section "Zündverzug".