Is there a pin-compatible replacement for MWSA1004S-330MT?

While parts like MWSA1004S-220MT share the same package and pinout, their electrical characteristics, specifically inductance, are different. They are not electrically pin-compatible without design changes.

What risks should I check before replacing MWSA1004S-330MT?

When substituting, verify the new inductor's inductance, saturation current (Isat), and DC resistance (DCR). A different inductance will alter power converter performance. Also confirm physical dimensions fit your layout.

MWSA1004S-330MT Alternatives, Datasheet & Cross Reference | Shenzhen Sunlord Electronics Co., Ltd.

The Sunlord MWSA1004S-330MT is a 33µH molded power inductor in a 10x11.5x4.0mm package. Finding a replacement requires matching inductance, current ratings, and physical size.

AI replacement insight

Electrical riskhigh

Inductance difference requires circuit redesign and validation.

Package risklow

Most candidates are in the same package family, but height can vary.

Can it be replaced directly?

No direct, drop-in replacement for the MWSA1004S-330MT has been found in this review. All candidates have different inductance values.

Best replacement path

Evaluate same-family parts like MWSA1004S-220MT if the design tolerates lower inductance, or search for 33µH inductors from other vendors.

Main risk

The primary risk is the significant inductance mismatch in all reviewed candidates, which will alter circuit behavior.

Recommended alternatives

A power inductor with identical package, lower inductance, and improved current/DCR ratings.

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Alternative comparison matrix

Feature / factor	MWSA1004S-330MT	MWSA1004S-220MT	MWSA1004S-150MT	Compatibility / risk
Inductance	33µH	22µH	15µH	22µH / 15µH — Significantly lower, requires circuit re-evaluation.; MWSA1004S-150MT: Significantly lower, requires circuit re-evaluation.
Saturation Current A	4.8A	5.5A	6.5A	5.5A / 6.5A — Higher saturation current provides more margin.; MWSA1004S-150MT: Higher saturation current provides more margin.
Current	2.65A	4.2A	-	4.2A — Higher heat rating current.
Dcr Ohm	160mΩ	66mΩ	65mΩ	66mΩ / 65mΩ — Lower DCR improves efficiency.; MWSA1004S-150MT: Lower DCR improves efficiency.
Package	10x11.5x4.0mm	10x11.5x4.0mm	4.8mm	10x11.5x4.0mm / 4.8mm — Identical package dimensions.; MWSA1004S-150MT: Candidate is taller, check mechanical clearance.

Application & sourcing insights

Questions & answers

Currently, no direct drop-in replacement has been identified. Alternatives like MWSA1004S-220MT exist within the same product family but have a different inductance (22µH) which requires circuit redesign.