Infineon Technologies TT104N12KOFAHPSA1

Overview

TT104N12KOFAHPSA1 from Infineon Technologies is a phase-control thyristor module with pressure-contact construction, rated for 1200 V repetitive peak off-state voltage (VDRM/VRRM), 102 A average on-state current at TC = 85°C, and 2050 A non-repetitive surge current (ITSM). It features electrically insulated baseplate, 0.35 K/W junction-to-case thermal resistance, and is designed for high-reliability industrial power control in soft starters and static transfer switches.

For engineers reviewing the TT104N12KOFAHPSA1 datasheet, TT104N12KOFAHPSA1 pinout, TT104N12KOFAHPSA1 application, or TT104N12KOFAHPSA1 equivalent, key selection criteria include verified VDRM/VRRM rating, ITAVM derating at elevated case temperature, gate trigger thresholds (IGT ≤ 120 mA, VGT ≤ 1.4 V), and thermal impedance ZthJC transient behavior under sinusoidal conduction angles.

Technical Context

This dual-thyristor module implements line-commutated phase-angle control in AC power circuits, supporting bidirectional blocking and controlled turn-on via gate pulse triggering. Its pressure-contact die attachment ensures low parasitic inductance and stable rT (2.43 mΩ) and VT0 (0.85 V) across temperature and lifetime.

Designed for forced-air or liquid-cooled heatsink mounting, it delivers 160 A RMS on-state current capability with 150 µs typical turn-off time (tq) under commutation conditions (vRM = 100 V, dvD/dt = 20 V/µs), enabling reliable operation in crowbar and UPS rectifier topologies requiring fast fault isolation.

Key Specifications

Pinout & Package

TT104N12KOFAHPSA1 is housed in an industrial-standard press-pack module with electrically insulated baseplate (AlN ceramic), 20 mm baseplate thickness, and M1/M2 terminal screw connections. Mechanical mounting torque: 4 Nm ±15% (M1); electrical terminal torque: 4 Nm ±10% (M2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT104N12KOFAHPSA1, the TT104N14KOFAHPSA1 offers enhanced voltage margin without thermal or drive trade-offs, while the TD104N12KOFAHPSA1 provides identical per-arm performance in a single-arm form factor-enabling flexible topology mapping but requiring duplicated gate drive circuitry.

Availability

TT104N12KOFAHPSA1 is available at Aetrix Electronics and suitable for soft starters, UPS rectifiers, crowbar protection circuits, and static transfer switches requiring stable component supply, long-lifecycle support, and traceable industrial-grade sourcing.

Supply support for TT104N12KOFAHPSA1 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 semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy applications.

This part belongs to Infineon's high-power thyristor module product line, engineered specifically for robust, maintenance-free phase-angle control in mission-critical AC power conditioning and protection systems.

FAQ

What is the maximum allowable junction temperature for TT104N12KOFAHPSA1?

The maximum junction temperature (Tvj max) is 140°C, as specified in the thermal characteristics section. This limit must be respected under all operating conditions-including surge events-to ensure long-term reliability and prevent thermal runaway. Derating curves in the datasheet show allowable ITAVM reduction as case temperature rises above 85°C.

Does TT104N12KOFAHPSA1 require forced cooling?

Yes-continuous operation at ITAVM = 102 A requires active cooling. The module's RthJC = 0.35 K/W and RthCH = 0.05 K/W per arm necessitate a heatsink with RthHA ≤ 0.25 K/W (for TA = 40°C) to maintain Tvj ≤ 140°C. Natural convection is insufficient for rated current; forced air or liquid cooling is mandatory.

Can TT104N12KOFAHPSA1 be used in parallel configurations?

No-parallel operation is not recommended. The module lacks built-in current-sharing features such as matched dynamic parameters or integrated balancing resistors. Uneven current distribution due to parameter spread (e.g., VTO, rT, tq) would cause thermal instability and premature failure. Use higher-rated single modules instead.

What gate drive voltage and current are required for reliable triggering?

A minimum gate trigger voltage of 1.4 V and current of 120 mA at 25°C is required, with pulse width ≥20 µs. For robust operation across temperature (-40°C to +140°C), drivers should deliver ≥2.0 V and ≥200 mA peak to ensure margin against parameter drift and contact resistance variation in industrial environments.