
Chilisin
A Chilisin upgrade in the same package with higher current ratings (4.4A Isat, 3.6A Irms) and lower DCR.
Find pin-compatible upgrades and functional alternatives for the Sunlord SWPA252012S1R0MT 1.0µH power inductor. Review top replacements from TDK, Chilisin, and Sunlord with improved current ratings and efficiency.
Most alternatives offer superior current and DCR ratings, reducing electrical stress.
Multiple options match the 2520 package. Risk is high only if a functional alternate with a different package is chosen.
Alternatives are available from multiple major manufacturers like TDK and Chilisin, improving supply chain resilience.
Yes, several pin-compatible replacements exist for SWPA252012S1R0MT. Parts like WPN252012E1R0MT and TFM252012ALMA1R0MTAA offer the same 1.0µH inductance in a 2520 package with superior current ratings.
Use a pin-compatible upgrade like WPN252012E1R0MT or TFM252012ALMA1R0MTAA for improved performance without board changes.
The main risk is minimal if a pin-compatible upgrade is chosen. For functional alternatives, the primary risk is the required PCB redesign due to different package footprints.

Chilisin
A Chilisin upgrade in the same package with higher current ratings (4.4A Isat, 3.6A Irms) and lower DCR.
| Feature / factor | SWPA252012S1R0MT | HEI252012A-1R0M-Q8 | TFM252012ALMA1R0MTAA | WPN252012E1R0MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2520 | 2520 (1008 Metric) | 2520 (1008 Metric) | 2520 (1008 Metric) | 2520 (1008 Metric) — Same package family ensures form and fit compatibility.; TFM252012ALMA1R0MTAA: Same package family ensures form and fit compatibility.; WPN252012E1R0MT: Same package family ensures form and fit compatibility.; WPN252010H1R0MT: Same package family ensures form and fit compatibility. |
| Saturation Current A | 2.9 A | 4.4 A | 4.2 A | 5.0 A | 4.4 A / 4.2 A / 5.0 A / 3.5 A — Higher saturation current provides more margin.; TFM252012ALMA1R0MTAA: Higher saturation current provides more margin.; WPN252012E1R0MT: Higher saturation current provides more margin against core saturation.; WPN252010H1R0MT: Higher saturation current provides more margin. |
| Current A | 2.1 A | 3.6 A | 3.7 A | 3.5 A | 3.6 A / 3.7 A / 3.5 A / 2.5 A — Higher RMS current rating allows for higher continuous current.; TFM252012ALMA1R0MTAA: Higher RMS current rating allows for higher continuous current.; WPN252012E1R0MT: Higher RMS current rating allows for higher continuous current.; WPN252010H1R0MT: Higher RMS current rating. |
| Dcr Ohm | 0.069 Ω | 0.042 Ω | 0.042 Ω | 0.037 Ω | 0.042 Ω / 0.037 Ω / 0.063 Ω — Lower DCR improves efficiency.; TFM252012ALMA1R0MTAA: Lower DCR improves efficiency.; WPN252012E1R0MT: Lower DCR improves efficiency by reducing copper losses.; WPN252010H1R0MT: Slightly lower DCR improves efficiency. |
| Application | Commercial | - | AEC-Q200 | - | AEC-Q200 — Automotive qualification may be beneficial for high-reliability applications. |
The best alternatives are pin-compatible upgrades that offer better performance. WPN252012E1R0MT from Sunlord and TFM252012ALMA1R0MTAA from TDK are excellent choices with higher current ratings and lower DCR.