
Upgrade path for new designs with superior current ratings and lower DCR, but requires a larger PCB footprint.
Searching for a replacement for the Sunltech SLS6D38S330MTT 33µH inductor? This guide reviews alternatives, highlighting key differences in package, current, and resistance.
Most candidates have different footprints or heights.
Trade-offs between DCR and current ratings are common.
No direct drop-in replacement has been identified. All candidates have variations in package size, height, or DC resistance that require engineering review.
Consider CYA0650-33UH if a 1mm height increase is acceptable. For new designs, PSPMAA1040H-330M-ANP offers superior electricals in a larger package.
The primary risks are mechanical incompatibility due to different package dimensions (footprint or height) and increased power loss from higher DC resistance.

Upgrade path for new designs with superior current ratings and lower DCR, but requires a larger PCB footprint.
| Feature / factor | SLS6D38S330MTT | PSPMAA1040H-330M-ANP | CYA0650-33UH | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 6.6x6.6x4.0mm | 11.5x10x4.0mm | 6.8x6.8x5.0mm | 11.5x10x4.0mm / 6.8x6.8x5.0mm — Significantly larger footprint; not a drop-in replacement.; CYA0650-33UH: Footprint is similar, but candidate is 1mm taller. | |
| Dcr Ohm | 124mΩ max | 120mΩ typ | 200mΩ max | 120mΩ typ / 200mΩ max — Lower DCR reduces power loss.; CYA0650-33UH: Higher DCR increases power loss and heat. | |
| Current A | 1.1A | 4.0A | 2.3A | 4.0A / 2.3A — Significantly higher RMS current rating.; CYA0650-33UH: Higher RMS current rating. | |
| Saturation Current A | Not specified | 6.0A | 3.0A | 6.0A / 3.0A — Significantly higher saturation current.; CYA0650-33UH: Target Isat is unknown; candidate value is moderate. |
CYA0650-33UH is a close functional alternative, but is 1mm taller and has higher DCR. For a pure performance upgrade in a new layout, PSPMAA1040H-330M-ANP is a strong choice.