Infineon Technologies TT240N28KOFHPSA1

Overview

TT240N28KOFHPSA1 from Infineon Technologies is a 2800 V repetitive peak off-state voltage, 240 A average on-state current, dual thyristor phase control module in pressure-contact ceramic housing with AlN isolation, designed for industrial AC power regulation in medium-voltage motor drives and DC traction rectifiers.

For engineers reviewing the TT240N28KOFHPSA1 datasheet, TT240N28KOFHPSA1 pinout, TT240N28KOFHPSA1 application, or TT240N28KOFHPSA1 equivalent, this module delivers verified 125 °C junction-rated switching performance, 500 V/µs critical dv/dt immunity, and 100 A/µs di/dt capability under forced-cooled B6-bridge operation at 50 Hz.

Technical Context

This dual-thyristor module implements a symmetrical B6-bridge-compatible topology with two independent, isolated arms sharing a common heatsink interface. Each arm supports gate-controlled turn-on with 250 mA max trigger current and 1.5 V max gate trigger voltage at 25 °C.

Thermal design relies on validated transient thermal impedance Z_thJC (0.039 °C/W max per module, 180° conduction) and case-to-heatsink resistance of 0.01 °C/W max, enabling stable operation up to 140 °C case temperature under 600 A RMS B6-bridge output current with KM17-type forced-air cooling.

Key Specifications

Pinout & Package

TT240N28KOFHPSA1 uses a pressure-contact ceramic module package (housing per Annex, page 3) with aluminum nitride (AlN) internal isolation, M1 mechanical mounting (6 Nm), and M2 electrical terminals (12 Nm). Dimensions and terminal layout match standard dual-thyristor footprint for B6-bridge mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT240N28KO12HPSA1, this part offers higher gate trigger margin for robustness in noisy environments; compared with TT330N28KOFHPSA1, it provides cost and thermal optimization for 240 A-class systems without overdesign.

Availability

TT240N28KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, DC traction rectifiers, medium-voltage UPS systems, and static VAR compensators requiring stable component supply across multi-year production cycles.

Supply support for TT240N28KOFHPSA1 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 electronics, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

This part belongs to Infineon's "Netz-Thyristor-Modul" series, engineered specifically for high-reliability phase-angle control in AC-to-DC conversion systems operating at 50/60 Hz with stringent thermal and EMI resilience requirements.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum allowable case temperature is 140 °C under forced-air cooling (KM17/Papst 4650N) with 180° conduction angle and 600 A RMS output in B6-bridge configuration. At natural cooling, TC must not exceed 100 °C for rated I_TAVM = 240 A. Exceeding these limits risks irreversible junction overheating and premature failure.

Can TT240N28KOFHPSA1 be used in anti-parallel configuration for AC output control?

Yes - its dual-arm architecture and isolated gate terminals (G1/K1 and G2/K2) support anti-parallel connection for AC phase control. Each arm must be driven with synchronized but polarity-inverted gate signals. The 2800 V V_DRM/V_RRM rating ensures safe blocking during zero-crossing transitions in 480 VAC or 690 VAC systems.

What gate drive voltage and current are required for reliable turn-on?

A minimum of 1.5 V gate trigger voltage and 250 mA peak gate current at 25 °C are required for guaranteed turn-on within 4.5 µs. Gate pulses must sustain ≥10 µs width and ≥1 A/µs di_G/dt to meet latching current (I_L ≤ 1500 mA) and avoid misfiring under high dv/dt stress.

Is creepage distance sufficient for 3.3 kV system insulation requirements?

With 19 mm creepage distance and 3.6 kV insulation test voltage (1 sec, 50 Hz), TT240N28KOFHPSA1 meets IEC 61800-5-1 requirements for Pollution Degree 3 environments at ≤3.3 kV system voltage. Additional external barrier spacing may be needed for reinforced insulation in safety-critical traction applications.