Infineon Technologies DT61N12KOFHPSA1

Overview

DT61N12KOFHPSA1 from Infineon Technologies is a phase-control thyristor module rated for 1200 V repetitive peak off-state voltage (VDRM/VRRM), 120 A RMS on-state current (ITRMSM), and 60 A average on-state current at TC = 85°C (ITAVM). It features a 150 A/µs critical rate of rise of on-state current (diT/dt)cr and 1000 V/µs critical off-state voltage rise rate (dvD/dt)cr, designed for industrial AC power control in motor drives and heating systems.

For engineers reviewing the DT61N12KOFHPSA1 datasheet, DT61N12KOFHPSA1 pinout, DT61N12KOFHPSA1 application, or DT61N12KOFHPSA1 equivalent, key selection criteria include gate trigger current (IGT ≤ 120 mA), holding current (IH ≤ 200 mA), thermal resistance junction-to-case (RthJC ≤ 0.26 °C/W per module), and UL listing (E83336) for safety-compliant high-power AC switching.

Technical Context

This double-sided, press-pack thyristor module integrates two anti-parallel thyristor arms in a single AlN-isolated ceramic housing, enabling bidirectional AC phase control without external reverse-blocking devices. Its 125 °C maximum junction temperature and 0.26 °C/W junction-to-case thermal resistance support high-reliability operation under forced-air or natural convection cooling with heatsink KM14.

The device uses silicon pellet with pressure contact construction and DIN 46244 A 2.8 × 0.8 control terminals. Gate triggering is optimized for 1 A pulse current with diG/dt ≥ 1 A/µs, achieving ≤ 3 µs gate-controlled delay time (tgd), while its 120 µs circuit-commutated turn-off time (tq) supports line-frequency commutation in B2 and B6 bridge configurations.

Key Specifications

Pinout & Package

DT61N12KOFHPSA1 is housed in a press-pack, double-sided ceramic module with AlN internal isolation and M1/M2 mechanical/electrical mounting screws. The package has no leads; power terminals are flat copper surfaces (anode/cathode per arm), and control terminals conform to DIN 46244 A 2.8 × 0.8 profile.

Key Features

Applications

Availability

DT61N12KOFHPSA1 is available at Aetrix Electronics and suitable for industrial motor drives, resistive heating systems, high-power DC supplies, and static VAR compensators requiring stable component supply across multi-year production cycles.

Supply support for DT61N12KOFHPSA1 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 security solutions, with global manufacturing and R&D infrastructure.

DT61N12KOFHPSA1 belongs to Infineon's BIP AC thyristor module product line, engineered for robust, high-efficiency AC power control in harsh industrial environments where reliability, thermal stability, and safety certification are critical.

FAQ

What is the maximum allowable case temperature for DT61N12KOFHPSA1?

The maximum allowable case temperature is not fixed but depends on operating current and cooling conditions. At ITAVM = 60 A and TC = 85°C, the device meets its rated average current. Thermal modeling using RthJC = 0.26 °C/W and RthCH = 0.08 °C/W shows TC reaches 105°C at ITAV = 76 A with natural cooling, remaining within the -40°C to +125°C operating range.

Does DT61N12KOFHPSA1 require a heatsink? If so, what type is recommended?

Yes, DT61N12KOFHPSA1 requires a heatsink for all applications above 10 A average current. Infineon specifies KM14 (50 W natural cooling) or KM14 with Papst 4650N fan (forced cooling) as reference heatsinks. Mounting torque must be 4 Nm ±15% on M1 screws and 4 Nm ±10% on M2 terminals to ensure optimal thermal contact and mechanical integrity.

Can DT61N12KOFHPSA1 be used in a single-phase application?

Yes - DT61N12KOFHPSA1 supports single-phase operation in B2 two-pulse bridge configuration. Its dual-arm architecture allows full-wave AC control with independent gate drives. For single-phase 230 V AC, maximum output current is limited by thermal design to ~85 A RMS (based on RthCA curves), with gate trigger parameters unchanged from three-phase use.

What is the gate drive requirement for reliable turn-on?

A minimum gate trigger current of 1 A with diG/dt ≥ 1 A/µs and pulse width ≥ 20 µs is required for guaranteed turn-on across temperature and voltage ranges. The datasheet specifies IGT ≤ 120 mA at vD = 6 V and Tvj = 25°C, but practical designs use higher-energy pulses to ensure margin at Tvj = 125°C and low-line conditions.