Infineon Technologies TT142N16KOFHPSA1

Overview

TT142N16KOFHPSA1 from Semikron is a phase-control thyristor module with dual anti-parallel SCR configuration, rated for 1600 V repetitive peak off-state voltage (VDRM/VRRM), 142 A average on-state current (ITAVM) at TC = 85°C, and 230 A RMS on-state current (ITRMSM). It delivers robust line-frequency power control in industrial AC motor drives and DC power supplies.

For engineers reviewing the TT142N16KOFHPSA1 datasheet, TT142N16KOFHPSA1 pinout, TT142N16KOFHPSA1 application, or TT142N16KOFHPSA1 equivalent, key selection criteria include commutated turn-off time (tq = 200 µs), critical dv/dt rating (1000 V/µs), junction-to-case thermal resistance (0.106 °C/W per arm), and gate trigger sensitivity (IGT ≤ 150 mA).

Technical Context

This dual-thyristor module implements a B6 six-pulse bridge-compatible topology with pressure-contact silicon die and aluminum nitride (AlN) internal isolation. Its 125°C maximum junction temperature and 0.106 °C/W junction-to-case thermal resistance support high-power, conduction-angle-controlled AC/DC conversion.

The device features a 200 µs circuit-commutated turn-off time (tq) under specified conditions (vRM = 100 V, dvD/dt = 20 V/µs), enabling reliable forced-commutation in phase-controlled rectifiers. Gate drive requirements are defined by IGT ≤ 150 mA and VGT ≤ 2 V at 25°C, with non-trigger thresholds (IGD ≤ 10 mA, VGD ≤ 0.25 V) ensuring noise immunity.

Key Specifications

Pinout & Package

TT142N16KOFHPSA1 uses a press-pack module package with isolated copper baseplate, AlN ceramic insulation, and M1 mechanical mounting (6 Nm ±15%). Terminal layout follows standard dual-thyristor configuration: two main anode/cathode pairs (A1/K1 and A2/K2) plus two isolated gate terminals (G1 and G2), each conforming to DIN 46244 A (2.8 × 0.8 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKKT 142/16E, TT142N16KOFHPSA1 offers +17 A average current and better thermal resistance; versus TT162N16KOFHPSA1, it trades 20 A current capacity for potentially lower cost and proven field reliability in established designs.

Availability

TT142N16KOFHPSA1 is available at Aetrix Electronics and suitable for industrial AC motor drives, DC power supplies, static VAR compensators, and welding power sources requiring stable component supply across multi-year production cycles.

Supply support for TT142N16KOFHPSA1 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, with ISO/TS 16949 and IATF 16949 certification.

This part belongs to Semikron's TT-series phase-control thyristor modules, engineered for high-power AC/DC conversion in mains-connected equipment where thermal stability, voltage ruggedness, and long-term conduction reliability are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature (TC) is not fixed but depends on current load and conduction angle. At ITAVM = 142 A and Θ = 180° sinusoidal conduction, TC must not exceed 85°C per datasheet derating curves. For rectangular conduction or lower currents, TC may rise to 125°C only if junction temperature remains ≤125°C and thermal resistance limits are observed.

Does TT142N16KOFHPSA1 require forced cooling?

No-natural cooling is sufficient for many applications. With KM17 heatsink (45 W rating) and three modules per heatsink, the module supports up to ~120 A ITAVM at Θ = 180°. Forced cooling (e.g., Papst 4650N fan) extends usable current to full 142 A ITAVM and improves transient thermal response, especially in B6 bridge configurations with high ripple content.

How is gate isolation implemented between the two thyristor arms?

Gate terminals G1 and G2 are fully galvanically isolated from each other and from the main terminals, with ≥3.0 kV RMS insulation test voltage and ≥15 mm creepage distance. This isolation enables independent gate drive circuits referenced to their respective cathodes (K1 and K2), essential for B6 bridge operation with common-cathode or common-anode topologies.

Can TT142N16KOFHPSA1 be used in asymmetrical half-wave configurations?

Yes-it supports asymmetrical conduction modes. The dual anti-parallel structure allows individual triggering of each thyristor arm, enabling half-wave phase control, DC chopper topologies, or unidirectional pulse applications. However, thermal design must account for unequal current sharing and resulting asymmetric junction heating, particularly at low conduction angles.