Infineon Technologies TT92N12KOFHPSA1

Overview

TT92N12KOFHPSA1 from Semikron is a phase-control thyristor module configured as a single-phase, anti-parallel pair (B2 topology) with 1200 V repetitive peak off-state voltage (VDRM/VRRM), 92 A average on-state current (ITAVM) at TC = 85°C, and 160 A RMS on-state current (ITRMSM). It delivers precise AC power regulation in industrial heating, motor speed control, and solid-state relay systems.

For engineers reviewing the TT92N12KOFHPSA1 datasheet, TT92N12KOFHPSA1 pinout, TT92N12KOFHPSA1 application, or TT92N12KOFHPSA1 equivalent, key selection criteria include gate trigger current (≤120 mA), critical dv/dt rating (1000 V/µs), junction-to-case thermal resistance (0.185 °C/W per module), and forced-air cooling compatibility for high-reliability AC line switching.

Technical Context

This thyristor module integrates two press-pack silicon chips in anti-parallel configuration to enable bidirectional conduction and full-wave AC phase control. Its design supports line-commutated operation with validated turn-off time (tq = 150 µs typ.) and robust immunity to false triggering via high critical dv/dt (1000 V/µs) and di/dt (150 A/µs) ratings.

Thermal performance is defined by dual-mode transient impedance models - one for sinusoidal load (Θ = 30°–180°) and another for rectangular current - enabling accurate junction temperature prediction under real-world duty cycles. The AlN-ceramic isolation ensures 2.5 kV RMS insulation withstand capability.

Key Specifications

Pinout & Package

TT92N12KOFHPSA1 uses a press-pack, double-sided cooled module package with ceramic (AlN) internal isolation and M1 mechanical mounting (4 Nm torque). Terminals are arranged for B2 bridge configuration: two main AC terminals (A1/K2 and A2/K1), plus isolated gate and cathode control terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MDA95-16N1 and CM600DY-24NF, TT92N12KOFHPSA1 offers optimal balance of voltage rating, thermal efficiency, and integrated anti-parallel topology for cost-sensitive, space-constrained B2 AC control - eliminating external diodes while maintaining 0.185 °C/W thermal performance.

Availability

TT92N12KOFHPSA1 is available at Aetrix Electronics and suitable for industrial heating control, solid-state motor starters, and reactive power compensation systems requiring stable component supply and long-term production continuity.

Supply support for TT92N12KOFHPSA1 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, renewable energy, and traction applications since 1951.

TT92N12KOFHPSA1 belongs to the TT92N series of press-pack thyristor modules engineered specifically for ruggedized AC phase control in harsh environments - emphasizing thermal stability, high dv/dt immunity, and long service life under cyclic loading.

FAQ

What is the maximum allowable case temperature for continuous operation?

The maximum case temperature (TC) is 130°C, but derating is required above 85°C. At TC = 100°C, ITAVM drops to 72 A; at TC = 130°C, it falls to 48 A. These values are derived from the published TC vs. ITAVM curves for sinusoidal conduction at Θ = 180° and must be applied with verified heatsink thermal resistance.

Does TT92N12KOFHPSA1 require a heatsink? If so, what type is recommended?

Yes - mandatory heatsinking is required. For natural convection, KM14 (50 W) is specified with 3 modules per heatsink. For forced air, KM14 with Papst 4650N fan achieves 0.08 °C/W RthCA. Mounting torque must be 4 Nm ±15% on M1 screws to ensure optimal thermal contact and pressure uniformity across the Si pellet.

Can TT92N12KOFHPSA1 be used in a six-pulse (B6) rectifier configuration?

No - TT92N12KOFHPSA1 is a single-phase anti-parallel (B2) module. A B6 configuration requires three such modules (one per phase) with isolated gate drives and synchronized firing. The datasheet provides B6 current derating curves (ID up to 200 A at RthCA = 0.25 °C/W), confirming system-level viability when properly paralleled and controlled.

What gate drive requirements must be met for reliable turn-on?

Each gate (G1/G2) requires ≥0.6 A peak current with di/dt ≥0.6 A/µs and pulse width ≥20 µs. Trigger voltage must exceed VGT max (1.4 V) at vD = 6 V. Gate-cathode voltage must remain below VGD max (0.2 V) during blocking to prevent false turn-on - achieved via optocoupler-isolated drivers with active clamping.