Infineon Technologies TT92N16KOFKHPSA1

Overview

TT92N16KOFKHPSA1 from Semikron is a phase-control thyristor module configured as a single-phase, anti-parallel pair (B2 topology) for AC power regulation. It delivers 160 A RMS on-state current, 1600 V repetitive peak off-state voltage (VDRM/VRRM), and supports 2050 A non-repetitive surge current at 10 ms. Used in industrial AC motor speed controllers and heating system power stages.

For engineers reviewing the TT92N16KOFKHPSA1 datasheet, TT92N16KOFKHPSA1 pinout, TT92N16KOFKHPSA1 application, or TT92N16KOFKHPSA1 equivalent, key selection criteria include gate trigger current (≤120 mA), critical dv/dt rating (1000 V/µs), junction-to-case thermal resistance (0.175 °C/W per module), and isolation test voltage (3.0 kV RMS).

Technical Context

This thyristor module implements a pressure-contact silicon die structure with aluminum nitride (AlN) internal insulation, enabling high thermal cycling reliability and stable conduction under phase-angle control. Its 180° conduction capability supports full-wave AC line switching with precise firing angle control via gate pulse timing.

The device operates with a maximum junction temperature of 130 °C and requires heatsink mounting with 4 Nm torque on M1 mechanical fasteners. Its 150 µs circuit-commutated turn-off time (tq) and 150 A/µs critical di/dt rating define safe commutation margins in inductive load circuits.

Key Specifications

Pinout & Package

TT92N16KOFKHPSA1 uses a press-pack, double-sided cooled module package with isolated baseplate. Mechanical terminals are M1 (case mounting) and M2 (electrical connection), with DIN 46244 A 2.8 × 0.8 mm control terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 92/16 E, TT92N16KOFKHPSA1 offers 8% higher average current rating and 0.02 °C/W lower thermal resistance, enabling tighter thermal budgets. Versus TT170N16KOF, it trades 10 A RMS headroom for proven field reliability in legacy B2 bridge designs with conservative derating.

Availability

TT92N16KOFKHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, resistive heating controls, welding power supplies, and reactive load compensation systems requiring stable component supply across multi-year production cycles.

Supply support for TT92N16KOFKHPSA1 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 manufacturer specializing in power semiconductor modules, with core expertise in high-reliability thyristor, IGBT, and diode technologies for industrial and energy infrastructure applications.

This part belongs to the TT92N series of phase-control thyristor modules engineered for ruggedized AC power regulation in harsh environments-designed specifically for B2 and B6 bridge topologies in motor drives and heating systems.

FAQ

What gate drive voltage and current are required to reliably trigger TT92N16KOFKHPSA1?

The device requires ≤1.4 V gate trigger voltage and ≤120 mA gate trigger current at 25 °C with 6 V anode-cathode voltage. Gate pulses must exceed 20 µs duration and maintain ≥0.6 A/µs di/dt to ensure latching at full temperature range. A 15 V, 200 mA peak gate driver with RC snubber is recommended for robust operation.

Can TT92N16KOFKHPSA1 be used in a six-pulse (B6) bridge configuration?

Yes-it is rated for B6 operation with up to 120 A average current per arm at 130 °C case temperature. The datasheet provides dedicated B6 derating curves showing 120 A maximum output at RthCA = 0.5 °C/W. Module pairing must maintain matched thermal paths and gate timing skew <1 µs between arms.

What is the creepage distance and why does it matter for this module?

The creepage distance is 12.5 mm between main terminals and baseplate, verified per IEC 61800-5-1 for Pollution Degree 3. This ensures safe operation in dusty, humid industrial environments where conductive contamination could otherwise cause surface tracking and insulation failure at 1600 V blocking voltage.

How does the 0.175 °C/W RthJC value translate to practical heatsink requirements?

At 92 A average current and 1.62 V on-state drop, power dissipation is ~149 W per module. With 0.175 °C/W junction-to-case and 0.05 °C/W case-to-heatsink resistance, a 45 °C ambient requires a heatsink with ≤0.325 °C/W total thermal resistance to hold junction temperature at 130 °C-achievable with forced-air-cooled KM14-type heatsinks.