Infineon Technologies IPA60R125C6E8191XKSA1

Overview

IPA60R125C6E8191XKSA1 from Infineon Technologies is a 600 V, 125 mΩ CoolMOS™ C6 superjunction MOSFET optimized for hard-switched and resonant SMPS topologies. It delivers 14 A continuous drain current at T_c = 100 °C, features ultra-low gate charge (Q_g = 27 nC), and achieves R_DS(on) × Q_g figure-of-merit of 3.375 Ω·nC - enabling high-efficiency 1–3 kW server PSUs and telecom rectifiers.

For engineers reviewing the IPA60R125C6E8191XKSA1 datasheet, IPA60R125C6E8191XKSA1 pinout, IPA60R125C6E8191XKSA1 application, or IPA60R125C6E8191XKSA1 equivalent, key selection criteria include its 600 V V_DSS, 125 mΩ R_DS(on), 27 nC total gate charge, 14 A I_D rating, and TO-220FP package thermal performance under forced-air cooling.

Technical Context

This device implements Infineon's CoolMOS™ C6 technology based on superjunction charge compensation, delivering significantly lower switching and conduction losses than previous generations. Its gate threshold voltage (V_GS(th)) is tightly specified at 3.0–4.0 V, and it supports fast, low-loss hard switching up to 100 kHz with minimal gate drive requirements.

The MOSFET integrates avalanche-rated ruggedness (E_AS = 410 mJ) and exhibits extremely low reverse recovery charge (Q_rr = 22 nC) in body diode operation - critical for PFC boost stages and LLC primary-side switching where diode commutation losses dominate efficiency.

Key Specifications

Pinout & Package

IPA60R125C6E8191XKSA1 is housed in a TO-220FP (Full-Pak) package: isolated plastic case, vertical lead frame, single-drain tab, and 3-pin configuration optimized for PCB-mounting with thermal pad soldered directly to copper pour.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power switching applications.

Compared with STP60N60DM6 and IXFH60N60X3, IPA60R125C6E8191XKSA1 offers the best balance of low Q_g-driven efficiency, integrated thermal isolation, and proven reliability in high-volume telecom/server SMPS - making it optimal for space-constrained, high-efficiency designs where gate drive simplicity and thermal management are critical.

Availability

IPA60R125C6E8191XKSA1 is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, and industrial UPS systems requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for IPA60R125C6E8191XKSA1 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 leader specializing in power management, automotive microcontrollers, and security ICs, with global manufacturing and R&D infrastructure.

The CoolMOS™ C6 series targets high-efficiency AC/DC conversion in datacenter, telecom, and industrial power supplies - engineered to replace older superjunction MOSFETs with superior R_DS(on) × Q_g and ruggedness.

FAQ

What is the maximum recommended gate-source voltage for IPA60R125C6E8191XKSA1?

The absolute maximum V_GS is ±20 V, but Infineon specifies 10 V as the optimal gate drive voltage for full enhancement while minimizing gate oxide stress. Driving above 15 V provides negligible R_DS(on) improvement (<2%) but accelerates gate oxide degradation under repeated thermal cycling.

Can IPA60R125C6E8191XKSA1 be used in synchronous rectification configurations?

No - this is a unidirectional N-channel MOSFET with an intrinsic body diode optimized for hard-switched primary-side operation. It lacks the low reverse recovery Q_rr and symmetrical conduction characteristics required for secondary-side synchronous rectification; dedicated SR controllers and logic-level MOSFETs are required instead.

Does IPA60R125C6E8191XKSA1 require a gate resistor, and what value is recommended?

Yes - a gate resistor is mandatory to control dV/dt and prevent oscillation. For typical 100–200 kHz operation with a 1-A gate driver, a 22 Ω non-inductive resistor is recommended. Lower values (10–15 Ω) improve switching speed but increase EMI; higher values (>47 Ω) reduce EMI but raise switching losses proportionally.

How does the TO-220FP package affect thermal design compared to standard TO-220?

The TO-220FP isolates the drain tab electrically from the leads, allowing direct heatsink mounting without insulating pads - reducing thermal resistance by up to 0.3 K/W. However, its plastic body limits maximum case temperature to 100 °C (vs. 150 °C for metal-can TO-220), requiring careful PCB copper area design to maintain safe junction temperatures.