Infineon Technologies IKW40N65H5FKSA1

Overview

IKW40N65H5FKSA1 from Infineon is a 650V, 40A high-speed TRENCHSTOP™ 5 IGBT copacked with a RAPID 1 fast/soft antiparallel diode in PG-TO247-3 package. It delivers 1.65V V_CE(sat) at 40A and 25°C, supports 175°C maximum junction temperature, and achieves 19ns turn-on delay and 62ns diode reverse recovery time at 25°C - optimized for solar converters and UPS inverters.

For engineers reviewing the IKW40N65H5FKSA1 datasheet, IKW40N65H5FKSA1 pinout, IKW40N65H5FKSA1 application, or IKW40N65H5FKSA1 equivalent, key selection criteria include hard-switching energy efficiency (E_ts = 0.14 mJ @ 5A), low gate charge (Q_G = 95 nC), thermal resistance (R_th(j-c) = 0.60 K/W), and JEDEC-qualified reliability for industrial power control.

Technical Context

This IGBT employs TRENCHSTOP™ 5 trench-gate field-stop structure with optimized carrier lifetime control to reduce switching losses while maintaining low conduction loss. Its integrated RAPID 1 diode features soft recovery (dI_rr/dt = −700 A/µs @ 5A) and low Q_rr (0.22 µC), minimizing voltage overshoot and EMI in high-frequency bridge legs.

The device operates across −40°C to +175°C junction range and is rated for 650V DC blocking with 120A pulsed collector current capability. Gate threshold voltage (V_GE(th) = 3.2–4.8 V) ensures robust noise immunity, and ±30V transient gate-emitter rating supports reliable drive in noisy industrial environments.

Key Specifications

Pinout & Package

IKW40N65H5FKSA1 uses the PG-TO247-3 package: insulated plastic case with isolated collector tab (backside), 3-pin through-hole configuration, and M3 screw-mounting interface. Thermal performance is enhanced by low R_th(j-c) and direct metal-to-heatsink contact via the collector tab.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed IGBT applications.

Compared with IKW40N65ES5 and FGH40N60UF, IKW40N65H5FKSA1 offers balanced conduction–switching trade-off, integrated soft-recovery diode, and proven field reliability in 400 V industrial inverters - making it optimal for solar, UPS, and welding applications demanding robustness and ease of layout.

Availability

IKW40N65H5FKSA1 is available at Aetrix Electronics and suitable for solar string inverters, uninterruptible power supplies, and industrial welding converters requiring stable component supply, long-term lifecycle support, and JEDEC-qualified reliability.

Supply support for IKW40N65H5FKSA1 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, sensor, and automotive ICs, with leadership in silicon and wide-bandgap power devices.

IKW40N65H5FKSA1 belongs to the TRENCHSTOP™ 5 High-Speed Switching series, designed specifically for industrial motor drives, renewable energy inverters, and UPS systems requiring high efficiency, ruggedness, and thermal resilience.

FAQ

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

The datasheet specifies RG(on) = RG(off) = 15 Ω for characterization. For 40 A operation at 20 kHz, a 10–22 Ω gate resistor balances switching speed and voltage overshoot. Lower values (<10 Ω) increase dV/dt stress on gate driver and parasitic inductance; higher values (>33 Ω) raise E_on/E_off and thermal load. Use active Miller clamp if operating above 100 kHz.

Does IKW40N65H5FKSA1 require a negative gate voltage for turn-off?

No. The device is fully compatible with 0 V/15 V gate drive and does not require negative bias. Its V_GE(th) (3.2–4.8 V) and low IGES (<100 nA) ensure safe turn-off at 0 V. Negative gate voltage (e.g., −5 V) may be used to improve noise immunity in high-dI/dt environments but is not necessary for functional operation.

Can this IGBT replace IKW40N65H3 in existing designs?

Yes - IKW40N65H5FKSA1 is a direct plug-and-play replacement for IKW40N65H3. It shares identical pinout, package (PG-TO247-3), voltage/current ratings, and thermal footprint. Key improvements include 25% lower E_ts, 15% lower V_CE(sat), and enhanced diode softness - all achievable without PCB or gate drive changes.

What is the short-circuit withstand time at 400 V bus voltage?

Per Infineon application note AN2015-05, IKW40N65H5FKSA1 sustains 10 µs short-circuit time at V_CE = 400 V, T_vj = 150°C, and V_GE = 15 V before entering desaturation. This enables implementation of fast-desat protection using standard comparators and blanking timers, without requiring external current sensors.