Is there a pin-compatible replacement for MAI4020S-100MT?

MDA4020-100M and SMNR4020-10UH share the same 4020 package and pinout, but both have lower current ratings than the original. Careful review of the application's current requirements is essential before substitution.

What risks should I check before replacing MAI4020S-100MT?

Key risks include package mismatch and lower current ratings. Ensure the replacement's saturation current (Isat) and DC resistance (DCR) meet your design needs to avoid overheating or performance loss. Verify the physical dimensions for PCB compatibility.

MAI4020S-100MT Alternatives, Datasheet & Cross Reference | Ceaiya

MAI4020S-100MT is a 10µH shielded power inductor in a compact 4020 package, rated for 2.8A saturation current. Finding a replacement requires matching the package size and ensuring current ratings are met.

AI replacement insight

Electrical riskhigh

Form-fit candidates have lower current ratings.

Package riskhigh

Electrically superior parts require a different PCB layout.

Can it be replaced directly?

No direct drop-in replacement has been identified. Same-package options are downgrades in current rating.

Best replacement path

Evaluate same-package candidates for current handling; if insufficient, consider a board spin for a larger, higher-rated functional alternate.

Main risk

Saturation current (Isat) mismatch is the primary risk, potentially leading to circuit instability under load.

Recommended alternatives

Same package but lower saturation current (1.9A vs 2.8A), posing a performance risk. Review application current loads.

View details

Alternative comparison matrix

Feature / factor	MAI4020S-100MT	MDA4020-100M	TMPA1265SP-100MN-D	Compatibility / risk
Package	4020	4020	12.6x13.5mm	4020 / 12.6x13.5mm — Package size matches.; TMPA1265SP-100MN-D: Package is much larger and not compatible.
Inductance	10µH	10µH	10µH	10µH — Inductance matches.; TMPA1265SP-100MN-D: Inductance matches.
Saturation Current A	2.8A	1.9A	17.0A	1.9A / 17.0A — Significantly lower saturation current.; TMPA1265SP-100MN-D: Significantly higher saturation current.
Dcr Ohm	0.22Ω	0.215Ω	0.013Ω	0.215Ω / 0.013Ω — Slightly lower DCR is beneficial.; TMPA1265SP-100MN-D: Significantly lower DCR.
Temperature	-40°C to +125°C	-55°C to +155°C	-	-55°C to +155°C — Wider operating temperature range.

Application & sourcing insights

Questions & answers

There are no direct drop-in replacements with superior or equal performance. Candidates like MDA4020-100M have the same package but lower current ratings, posing a downgrade risk. Functional alternates with better electricals exist but require a different PCB layout.