Is there a pin-compatible replacement for VLS6045EX-680M?

SMNR6045-680MT from SXN uses the same 6045 package and is a potential form-fit replacement. However, its lower saturation current must be verified for your application's peak current requirements.

What risks should I check before replacing VLS6045EX-680M?

Key risks include package size mismatch, which requires PCB redesign, and lower current ratings (Isat/Irms), which can lead to inductor saturation or overheating. Always verify the candidate's datasheet.

VLS6045EX-680M Alternatives, Datasheet & Cross Reference | TDK Electronics AG

VLS6045EX-680M is a 68µH power inductor from TDK in a 6.0x6.0mm package, used in DC-DC converters. Finding a replacement involves balancing package size with current ratings.

AI replacement insight

Electrical riskmedium

Candidates often have lower current ratings or require derating.

Package riskhigh

Electrically superior options may come in a much larger package, requiring PCB redesign.

Can it be replaced directly?

No direct drop-in replacement has been identified without caveats. SMNR6045-680MT is the closest form-fit option but has a lower saturation current.

Best replacement path

For form-fit, evaluate SMNR6045-680MT, accepting a minor current derating. For a performance upgrade, redesign for the larger FCH1365-680M.

Main risk

The main risk is finding a part that matches both the 6045 package and the 1.4A saturation current. Most same-package alternatives have different electrical specs.

Recommended alternatives

A form-fit alternative in the same 6045 package, but with a lower saturation current that requires careful review.

View details

Alternative comparison matrix

Feature / factor	VLS6045EX-680M	SMNR6045-680MT	FCH1365-680M	Compatibility / risk
Package	6045 (6.0 mm x 6.0 mm)	6045	13.7mm x 12.8mm	6045 / 13.7mm x 12.8mm — Package is form-fit compatible.; FCH1365-680M: Not form-fit compatible, requires PCB redesign.
Inductance	68µH	68µH	68µH	68µH — Inductance value matches.; FCH1365-680M: Inductance value matches.
Saturation Current A	1.4A	1.2A	5.5A	1.2A / 5.5A — Lower saturation current is a risk.; FCH1365-680M: Significantly higher saturation current.
Current A	1.0A	1.0A	4.5A	1.0A / 4.5A — Rated current matches.; FCH1365-680M: Significantly higher rated current.
Dcr Ohm	0.31Ω	0.286Ω	0.103Ω	0.286Ω / 0.103Ω — Slightly lower DCR.; FCH1365-680M: Lower DCR improves efficiency.

Application & sourcing insights

Questions & answers

SMNR6045-680MT offers the same package and inductance but has a slightly lower saturation current (1.2A vs 1.4A). For higher performance in a larger package, FCH1365-680M is a functional alternative.