Infineon Technologies TD170N12KOFHPSA1

Overview

TD170N12KOFHPSA1 from Infineon Technologies is a phase-control thyristor module designed for high-power AC line switching and rectification in industrial drive systems. It delivers 170 A average on-state current at 85 °C case temperature, supports 1200–1800 V repetitive peak blocking voltage, and features pressure-contact construction with electrically insulated baseplate for crowbar, soft starter, and UPS rectifier applications.

For engineers reviewing the TD170N12KOFHPSA1 datasheet, TD170N12KOFHPSA1 pinout, TD170N12KOFHPSA1 application, or TD170N12KOFHPSA1 equivalent, key selection criteria include verified ITAVM (170 A), VDRM/VRRM range (1200–1800 V), RthJC (0.17 K/W), gate trigger parameters (IGT ≤ 200 mA, VGT ≤ 2.0 V), and transient thermal impedance ZthJC for pulse-load derating.

Technical Context

This dual-thyristor module implements a B2 two-pulse bridge configuration with isolated gate terminals per arm and shared insulated baseplate. Its pressure-contact die attachment enables high di/dt capability (150 A/µs) and robust surge handling (ITSM = 5200 A, 10 ms), while AMPT (Advanced Medium Power Technology) ensures stable turn-on under high dv/dt stress (1000 V/µs).

The device operates across -40 °C to +125 °C junction temperature, with DC and sinusoidal conduction-angle derating curves provided for ITAVM and case temperature limits. Thermal design relies on validated RthJC (0.17 K/W per module) and RthCH (0.02 K/W per module) values, plus analytical ZthJC transient models for short-duration load pulses.

Key Specifications

Pinout & Package

TD170N12KOFHPSA1 uses an industrial-standard press-pack module package with electrically insulated baseplate (AlN ceramic), 50 mm × 50 mm footprint, and M1 mechanical mounting (5 Nm torque). Terminals are arranged for dual-arm B2 bridge topology.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TT170N12KOFHPSA1, TD170N12KOFHPSA1 eliminates external insulation hardware via integrated AlN baseplate, reducing assembly steps and improving thermal reliability; versus TD170N16KOFHPSA1, it trades 400 V blocking headroom for lower conduction loss and tighter voltage margin in 400–690 VAC applications.

Availability

TD170N12KOFHPSA1 is available at Aetrix Electronics and suitable for soft starter systems, UPS rectifiers, crowbar protection circuits, and static switch designs requiring stable component supply, long-life thermal cycling performance, and certified 125 °C junction operation.

Supply support for TD170N12KOFHPSA1 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 high-power thyristor module product line, engineered for ruggedized industrial AC power control-specifically targeting applications demanding high surge immunity, long-term thermal stability, and press-pack reliability in harsh environments.

FAQ

What is the maximum allowable case temperature for continuous operation?

The TD170N12KOFHPSA1 supports continuous operation up to TC = 85 °C for its rated ITAVM = 170 A. At higher case temperatures, derating is required per published ITAVM vs. TC curves for conduction angles Θ = 30°–180°, with absolute maximum case temperature limited to 125 °C under transient conditions.

Does this module require external snubber circuits?

Snubbers are not mandatory due to the device's high (dvD/dt)cr = 1000 V/µs and (diT/dt)cr = 150 A/µs ratings, but may still be recommended in high-noise industrial environments or when driving highly inductive loads to suppress voltage overshoot during commutation.

How is gate triggering implemented for dual-arm synchronization?

Each arm has independent gate terminals (G1, G2) requiring matched gate drive signals with precise timing alignment. Synchronization is achieved using isolated gate drivers referenced to respective cathodes (K1, K2), with propagation delay matching ≤100 ns to prevent shoot-through in bridge configurations.

What mechanical mounting torque values apply to terminals and baseplate?

Mechanical mounting torque for baseplate screws is 5 Nm ±15% (M1 thread), while electrical terminal torque for main current paths (A1, K1, A2, K2) is 12 Nm ±10% (M2 thread). Control terminals follow DIN 46244 A 2.8×0.8 specification and require 0.5–0.7 Nm torque for reliable signal integrity.