ProjectsPricingInsights

Best Alternatives to SWPA4030S470MT

Package: NonstandardShenzhen Sunlord Electronics Co., Ltd.ChokesSeries: SWPAPackage: Tape & Reel (TR)Type: Drum Core, WirewoundInductance: 47 µHTolerance: ±20%

Finding a replacement for the Sunlord SWPA4030S470MT 47µH inductor requires careful review of package size. While functional alternatives exist with better electrical performance, none are direct drop-in replacements.

AI replacement insight

Package riskhigh

All candidates have larger footprints, requiring PCB redesign. Not a drop-in replacement.

Electrical risklow

Candidates are upgrades (higher current, lower DCR), but changes may affect circuit tuning.

Can it be replaced directly?

No direct, pin-compatible replacement has been identified. All candidates require a change in the PCB layout due to larger package sizes.

Best replacement path

Find a 47µH inductor in a 4030 (4x4mm) package. If board space allows, Sunlord's SWPA6045S470MT offers better performance in a 6x6mm footprint.

Main risk

The primary risk is the physical package mismatch. The target is a 4x4mm inductor, while all proposed alternatives are significantly larger.

Recommended alternatives

5
SWPA6045S470MT package
SWPA6045S470MT

Sunlord

Needs validationhigh risk

A functional alternative with higher current and lower resistance, but in a larger physical package.

View details

Alternative comparison matrix

Feature / factorSWPA4030S470MTSWPA6045S470MTSLO0650H470MTTSLO1040H470MTTCompatibility / risk
Inductance H47 µH47 µH47 µH47 µH47 µH — Inductance matches target.; SLO0650H470MTT: Inductance matches target.; SLO1040H470MTT: Inductance matches target.; SMMS0650-470M: Inductance matches target.
Saturation Current A1.15 A1.4 A2.8 A3.7 A1.4 A / 2.8 A / 3.7 A — Higher saturation current is an upgrade.; SLO0650H470MTT: Higher saturation current is an upgrade.; SLO1040H470MTT: Significantly higher saturation current.; SMMS0650-470M: Higher saturation current is an upgrade.
Dcr Ohm1.3 Ω0.13 Ω0.252 Ω0.101 Ω0.13 Ω / 0.252 Ω / 0.101 Ω / 0.26 Ω — Lower DCR improves efficiency.; SLO0650H470MTT: Lower DCR improves efficiency.; SLO1040H470MTT: Lower DCR improves efficiency.; SMMS0650-470M: Lower DCR improves efficiency.
Package4030 (4x4mm)6045 (6x6mm)0650 (~7x7mm)1040 (~10x10mm)6045 (6x6mm) / 0650 (~7x7mm) / 1040 (~10x10mm) — Larger package requires PCB redesign.; SLO0650H470MTT: Larger package requires PCB redesign.; SLO1040H470MTT: Much larger package requires PCB redesign.; SMMS0650-470M: Larger package requires PCB redesign.

Application & sourcing insights

Questions & answers

The best functional alternative is SWPA6045S470MT, offering higher current and lower DCR, but it requires a larger 6x6mm footprint on the PCB.