SM5845-100MT
SXN
Needs validationmedium risk
Functional alternative with slightly better electricals, but in a larger package.
Best Alternatives to SM4532-100MT
SM4532-100MT is a 10uH unshielded power inductor in a 4532 package. While no direct drop-in replacements were found, several functional alternatives exist with superior electrical performance, but they require board redesign due to larger package sizes.
AI replacement insight
Package riskhigh
No candidates match the 4.5x4.0mm 4532 package. Board redesign is required.
Electrical risklow
All kept candidates offer superior current handling and lower DCR, which is generally safe.
Sourcing risklow
The target and candidates are from common catalog manufacturers, but availability should be checked.
Can it be replaced directly?
No direct pin-for-pin replacements were found in this review. All candidates with matching inductance have different physical packages, requiring a board layout change.
Best replacement path
Search for 10uH inductors in a 4532 (1812 imperial) package with Isat >= 1.45A and DCR <= 0.15 Ohm. The candidate SM5845-100MT is a functional upgrade but requires verifying if its slightly larger package (5.8x5.2mm) fits the PCB layout.
Main risk
The primary risk is physical incompatibility. All electrically suitable candidates are larger than the target and will not fit on the existing PCB footprint without modification.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SM4532-100MT | SM5845-100MT | PNLS8040-100M 10UH | SMMS1040-100M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4532 (4.5x4.0x3.2mm) | SM5845 (5.8x5.2x4.5mm) | 8040 (8.0x8.0x4.2mm) | 1040 (11.5x10.0x4.0mm) | SM5845 (5.8x5.2x4.5mm) / 8040 (8.0x8.0x4.2mm) / 1040 (11.5x10.0x4.0mm) / 1360 (13.8x12.6x6.5mm) — Candidate is larger, not form-fit.; PNLS8040-100M 10UH: Candidate is significantly larger, not form-fit.; SMMS1040-100M: Candidate is significantly larger, not form-fit.; SMMS1360-100M: Candidate is significantly larger, not form-fit. |
| Inductance | 10uH | 10uH | 10uH | 10uH | 10uH — Inductance matches.; PNLS8040-100M 10UH: Inductance matches.; SMMS1040-100M: Inductance matches.; SMMS1360-100M: Inductance matches. |
| Saturation Current A | 1.45A | 1.6A | 4.3A | 8.5A | 1.6A / 4.3A / 8.5A / 12.5A — Slightly higher current rating.; PNLS8040-100M 10UH: Higher current rating provides more margin.; SMMS1040-100M: Higher current rating provides more margin.; SMMS1360-100M: Higher current rating provides more margin. |
| Dcr Ohm | 0.15 Ohm | 0.10 Ohm | 0.04 Ohm | 0.034 Ohm | 0.10 Ohm / 0.04 Ohm / 0.034 Ohm / 0.018 Ohm — Lower DCR improves efficiency.; PNLS8040-100M 10UH: Lower DCR improves efficiency.; SMMS1040-100M: Lower DCR improves efficiency.; SMMS1360-100M: Lower DCR improves efficiency. |
| Shielding | Unshielded | - | - | - | Molded (Shielded) — May reduce EMI but affect performance. |
Application & sourcing insights
Questions & answers
No direct drop-in replacement was found. The best functional alternative is SM5845-100MT, which offers better current handling and lower resistance. However, its package is larger (5.8x5.2mm vs 4.5x4.0mm) and requires verifying PCB layout compatibility.