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Best Alternatives to SLF12575T-330M3R2-PF

Package: NonstandardTDK Electronics AGChokesSeries: SLFPackage: Tape & Reel (TR) Cut Tape (CT) Digi-Reel®Type: Drum Core, WirewoundInductance: 33 µHTolerance: ±20%

SLF12575T-330M3R2-PF is an End-of-Life 33µH power inductor. Finding a replacement requires careful evaluation of functional alternatives, as no direct drop-in options are available.

AI replacement insight

Package riskhigh

All candidates have different footprints, requiring a mandatory PCB layout change.

Electrical riskmedium

All candidates have higher DC Resistance (DCR), which will increase power loss and heat. This must be evaluated in the application.

Can it be replaced directly?

No, there are no direct, drop-in replacements for SLF12575T-330M3R2-PF. All suitable alternatives have different package footprints.

Best replacement path

Redesign the PCB for a modern inductor. FCH1050-330M offers a strong current upgrade with a manageable DCR increase.

Main risk

The primary risk is package incompatibility, which mandates a printed circuit board (PCB) redesign.

Recommended alternatives

4
FCH1050-330M package
FCH1050-330M

FC

Needs validationhigh risk

Functional alternative with much higher current ratings but different package and higher DCR.

View details

Alternative comparison matrix

Feature / factorSLF12575T-330M3R2-PFFCH1050-330MPSPMAA0805-330M-ANPPSPMAA1040H-330M-ANPCompatibility / risk
Package12.5 x 12.5 x 7.5 mm1050 (~10x10mm)SMD, 8.0mm x 8.5mmSMD, 1040H (~11.5x10mm)1050 (~10x10mm) / SMD, 8.0mm x 8.5mm / SMD, 1040H (~11.5x10mm) / 7.5mm x 7.0mm — Requires PCB redesign.; PSPMAA0805-330M-ANP: Requires PCB redesign.; PSPMAA1040H-330M-ANP: Requires PCB redesign.; SPM7054VT-330M-D: Requires PCB redesign.
Inductance33µH33µH33µH33µH33µH — matched; PSPMAA0805-330M-ANP: matched; PSPMAA1040H-330M-ANP: matched; SPM7054VT-330M-D: matched
Saturation Current A3.2A6.0A6.0A6.0A6.0A / 3.6A — Significantly higher current handling.; PSPMAA0805-330M-ANP: Significantly higher current handling.; PSPMAA1040H-330M-ANP: Significantly higher current handling.; SPM7054VT-330M-D: Higher is generally better.
Current A3.4A5.0A3.5A4.0A5.0A / 3.5A / 4.0A / 3.4A — Itemp rating is much higher.; PSPMAA0805-330M-ANP: Itemp rating is slightly higher.; PSPMAA1040H-330M-ANP: Itemp rating is higher.; SPM7054VT-330M-D: Itemp rating.
Dcr Ohm39.5mΩ72mΩ111mΩ120mΩ72mΩ / 111mΩ / 120mΩ / 97.7mΩ — Higher DCR increases power loss.; PSPMAA0805-330M-ANP: Significantly higher DCR increases power loss.; PSPMAA1040H-330M-ANP: Significantly higher DCR increases power loss.; SPM7054VT-330M-D: Higher DCR increases power loss.

Application & sourcing insights

Questions & answers

No direct drop-in replacement has been identified. The best functional alternative is likely FCH1050-330M, which offers superior current ratings but requires a PCB redesign and has higher DCR.