Is there a pin-compatible replacement for IKW40N65H5?

Several parts like IKW40N120CS6 share the same TO-247-3 package, making them mechanically compatible. However, electrical differences mean they are not drop-in replacements and require engineering validation.

What risks should I check before replacing IKW40N65H5?

Key risks include changes in switching speed, gate drive needs, and thermal performance due to different technology and voltage ratings. Also, verify the replacement's diode characteristics match your application's needs.

IKW40N65H5 Alternatives, Datasheet & Cross Reference | Infineon

IKW40N65H5 is a 650V, 40A high-speed TRENCHSTOP 5 IGBT from Infineon in a TO-247 package. Finding a replacement requires matching its unique combination of voltage, current, and fast RAPID 1 diode performance.

AI replacement insight

Electrical riskhigh

Voltage and diode differences require circuit validation.

Package risklow

All candidates use the same TO-247-3 package.

Firmware riskmedium

Discrete component with no firmware.

Can it be replaced directly?

No direct drop-in replacement was found. All candidates have significant parametric differences, primarily in voltage rating and diode type, requiring engineering review.

Best replacement path

Upgrade to IKW40N120CS6 for better efficiency, but validate circuit for higher voltage rating and different diode.

Main risk

Electrical characteristic mismatch, particularly the much higher voltage rating (1200V vs 650V) and different diode technology, can affect switching behavior.

Recommended alternatives

A potential upgrade with newer TRENCHSTOP 6 technology and lower saturation voltage, but has a much higher 1200V rating.

View details

Alternative comparison matrix

Feature / factor	IKW40N65H5	IKW40N120CS6	IKW40N120H3	Compatibility / risk
Package	PG-TO247-3	PG-TO247-3	PG-TO247-3	PG-TO247-3 — Mechanically compatible package.; IKW40N120H3: Mechanically compatible package.
Voltage	650V	1200V	1200V	1200V — Significantly higher voltage may alter switching dynamics.; IKW40N120H3: Significantly higher voltage may alter switching dynamics.
Current	40A	40A	40A	40A — Collector current rating matches.; IKW40N120H3: Collector current rating matches.
Technology	TRENCHSTOP 5	TRENCHSTOP 6	TRENCHSTOP H3	TRENCHSTOP 6 / TRENCHSTOP H3 — Newer generation offers potentially better efficiency.; IKW40N120H3: Older generation may have higher losses.
Vce Sat	2.10V	1.85V	-	1.85V — Lower saturation voltage improves conduction losses.
Diode	RAPID 1	-	Soft, Fast Recovery	Soft, Fast Recovery — Diode characteristics differ from target's RAPID 1.

Application & sourcing insights

Questions & answers

IKW40N120CS6 is a potential upgrade from a newer technology generation (TRENCHSTOP 6) with lower losses, but its 1200V rating is much higher and requires careful design review.