Is there a pin-compatible replacement for SWPA4030S2R2MT?

SWPA4030S2R2NT shares the same 4030 package and pinout, making it a potential form-fit replacement. However, it has a wider inductance tolerance of ±30% compared to the target's ±20%, which requires careful engineering review before use.

What risks should I check before replacing SWPA4030S2R2MT?

Before replacing, you must verify the inductance tolerance, saturation current (Isat), and heat rating current (Irms) meet your circuit's requirements. Also, check the physical dimensions, especially package height, to ensure it fits on your PCB.

SWPA4030S2R2MT Alternatives, Datasheet & Cross Reference | Shenzhen Sunlord Electronics Co., Ltd.

The Sunlord SWPA4030S2R2MT is a common 2.2µH shielded power inductor in a 4.0x4.0x3.0mm package, widely used in DC-DC converters. While no exact drop-in is identified, several functional alternatives exist that may be suitable after engineering review.

AI replacement insight

Electrical riskmedium

Candidates may have different tolerance or current ratings that can affect circuit stability and efficiency.

Package risklow

Alternatives may have a different height, requiring mechanical verification even if the footprint matches.

Can it be replaced directly?

No exact drop-in replacement is listed. SWPA4030S2R2NT is the closest in form-factor but has a wider inductance tolerance (±30% vs ±20%) and requires engineering validation.

Best replacement path

For an electrical upgrade, consider WPN4020H2R2MT if its lower profile fits. For a closer form-fit, SWPA4030S2R2NT is an option but requires tolerance review.

Main risk

The primary risks are mismatched electrical parameters like inductance tolerance and current ratings, and physical incompatibility from different package dimensions.

Recommended alternatives

Shares the same package and key specs, but has a wider inductance tolerance that needs review.

View details

Alternative comparison matrix

Feature / factor	SWPA4030S2R2MT	SWPA4030S2R2NT	WPN4020H2R2MT	Compatibility / risk
Package	4030	4030	4020 (4x4x2.0mm)	4030 / 4020 (4x4x2.0mm) — Same 4.0x4.0mm footprint and 3.0mm height.; WPN4020H2R2MT: Same footprint but lower profile (2.0mm vs 3.0mm height).
Inductance	2.2 µH	2.2 µH	2.2 µH	2.2 µH — Nominal inductance is identical.; WPN4020H2R2MT: Nominal inductance is identical.
Tolerance	±20%	±30%	-	±30% — Candidate has wider tolerance, may affect circuit performance.
Saturation Current A	5.8 A	5.8 A	7.6 A	5.8 A / 7.6 A — Saturation current matches.; WPN4020H2R2MT: Candidate has higher saturation current.
Current A	3.2 A	Not specified	4.3 A	Not specified / 4.3 A — Heat rating current (Irms) is missing for candidate.; WPN4020H2R2MT: Candidate has higher heat rating current.
Dcr Ohm	39 mΩ	-	40 mΩ	40 mΩ — DCR is negligibly higher.

Application & sourcing insights

Questions & answers

The best alternative depends on your design priorities. WPN4020H2R2MT offers superior current ratings in a lower-profile package. SWPA4030S2R2NT matches the package size exactly but has a wider inductance tolerance that needs to be verified for your application.