Infineon Technologies IKW25N120T2FKSA1

Overview

IKW25N120T2FKSA1 from Infineon is a 1200 V, 25 A TrenchStop® 2nd generation IGBT with integrated soft-fast anti-parallel emitter-controlled diode in PG-TO-247-3 package. It delivers 1.7 V V_CE(sat) at 25 °C, 10 µs short-circuit withstand time, and 120 nC total gate charge - optimized for frequency converters and uninterruptible power supplies requiring rugged switching under high-voltage, medium-current conditions.

For engineers reviewing the IKW25N120T2FKSA1 datasheet, IKW25N120T2FKSA1 pinout, IKW25N120T2FKSA1 application, or IKW25N120T2FKSA1 equivalent, key selection criteria include its positive V_CE(sat) temperature coefficient for stable paralleling, low EMI profile, and JEDEC1-qualified reliability for industrial UPS and motor drive systems.

Technical Context

This IGBT uses TrenchStop® 2nd generation silicon technology to achieve tight parameter distribution and temperature-stable behavior up to 175 °C junction temperature. Its integrated emitter-controlled diode features 195 ns reverse recovery time (T_j = 25 °C) and 2.05 µC Q_rr, enabling low-loss commutation in hard-switched topologies.

The device operates with ±20 V gate-emitter voltage rating and exhibits 13.5 S transconductance at 25 °C. Its thermal resistance from junction-to-case is 0.43 K/W (IGBT) and 0.81 K/W (diode), supporting high-power density designs when mounted on heatsinks with controlled thermal interface resistance.

Key Specifications

Pinout & Package

PG-TO-247-3 package with isolated mounting hole, standard lead frame geometry, and creepage/clearance compliant with IEC 61800-5-1 for 1200 V systems.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT switching applications.

Compared with IKW25N120H3 and FGA25N120ANTD, the IKW25N120T2FKSA1 offers the optimal balance of short-circuit robustness, gate drive simplicity, and thermal stability for industrial UPS and frequency converter designs operating at 10–16 kHz.

Availability

IKW25N120T2FKSA1 is available at Aetrix Electronics and suitable for industrial UPS systems, three-phase motor drives, solar string inverters, and energy storage system bi-directional converters requiring stable component supply across multi-year production cycles.

Supply support for IKW25N120T2FKSA1 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 AG is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and renewable energy markets.

The TrenchStop® 2nd generation IGBT product line was engineered specifically for high-voltage industrial inverters demanding ruggedness, predictable short-circuit behavior, and simplified thermal design in frequency converters and UPS systems.

FAQ

What is the maximum recommended gate resistor value for reliable switching?

A 16.4 Ω gate resistor is specified in the datasheet for dynamic characterization at T_j = 175 °C. Using >25 Ω increases turn-off delay (265 ns → 340 ns) and total switching energy (2.9 mJ → 4.3 mJ), risking thermal overload at high frequencies. For 12–16 kHz operation, 12–18 Ω is optimal to balance EMI and loss.

Does this IGBT require an external freewheeling diode?

No. The IKW25N120T2FKSA1 integrates a soft, fast emitter-controlled diode with 195 ns trr and 2.05 µC Q_rr at 25 °C. This diode is co-packaged and thermally coupled to the IGBT die, eliminating the need for discrete antiparallel diodes in standard inverter leg configurations.

How does the positive V_CE(sat) temperature coefficient improve paralleling performance?

As junction temperature rises, V_CE(sat) increases - causing current to naturally shift away from hotter devices. This self-balancing effect prevents thermal runaway during parallel operation, allowing up to four devices to share current within ±10% without active current sensing or ballasting resistors.

Is the PG-TO-247-3 package compatible with standard TO-247 heatsink mounts?

Yes. The PG-TO-247-3 follows JEDEC TO-247 outline standards with identical mechanical dimensions, mounting hole position, and lead pitch. It uses standard M3 screws and thermal interface materials; no adapter or custom fixture is required for legacy TO-247 heatsink integration.