SWPA5040S2R2NT
Sunlord
Needs validationmedium risk
Performance upgrade with higher current and lower DCR, but in a larger 5.0x5.0mm package with wider tolerance.
Best Alternatives to WPN4012H2R2MT
The Sunlord WPN4012H2R2MT is a 2.2µH wire-wound power inductor in a 4.0x4.0mm package, suitable for DC-DC converters. While no direct pin-compatible replacements are confirmed, several functional alternatives with different footprints are available.
AI replacement insight
Package riskhigh
All candidates have different footprints (3x3mm, 5x5mm, etc.) requiring a new PCB layout.
Electrical riskmedium
Many alternatives have different heat rating currents (Irms) or DC resistance (DCR), affecting thermal performance and efficiency.
Can it be replaced directly?
No direct drop-in replacement is confirmed. All alternatives require engineering review and likely a board respin.
Best replacement path
For an upgrade, consider Sunlord's SWPA5040S2R2NT for higher current handling, if a larger 5.0x5.0mm footprint is acceptable. For size reduction, consider TDK's VLS3012HBX-2R2M, but verify the lower heat rating current.
Main risk
Package incompatibility is the main risk; all reviewed alternatives require a PCB layout change.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | WPN4012H2R2MT | SWPA5040S2R2NT | TFM252012ALVA2R2MTAA | VLS3012HBX-2R2M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4012 (4.0x4.0mm) | 5040 (5.0x5.0mm) | 2520 (2.5x2.0mm) | 3030 (3.0x3.0mm) | 5040 (5.0x5.0mm) / 2520 (2.5x2.0mm) / 3030 (3.0x3.0mm) / 3012 (3.0x3.0mm) — Requires PCB layout change.; TFM252012ALVA2R2MTAA: Requires PCB layout change.; VLS3012HBX-2R2M: Requires PCB layout change.; WPN3012H2R2MT: Requires PCB layout change. |
| Inductance | 2.2µH ±20% | 2.2µH ±30% | 2.2µH ±20% | 2.2µH ±20% | 2.2µH ±30% / 2.2µH ±20% — Wider tolerance.; TFM252012ALVA2R2MTAA: matched; VLS3012HBX-2R2M: matched; WPN3012H2R2MT: matched |
| Saturation Current A | 2.8A | 5.5A | 2.8A | 3.35A | 5.5A / 2.8A / 3.35A — Higher saturation current (Isat).; TFM252012ALVA2R2MTAA: Saturation current (Isat) matches.; VLS3012HBX-2R2M: Higher saturation current (Isat).; WPN3012H2R2MT: Saturation current (Isat) matches. |
| Current A | 3.2A | 4.3A | 2.6A | 2.84A | 4.3A / 2.6A / 2.84A / 2.05A — Higher heat rating current (Irms).; TFM252012ALVA2R2MTAA: Heat rating current (Itemp) is lower.; VLS3012HBX-2R2M: Heat rating current (Itemp) is lower.; WPN3012H2R2MT: Heat rating current (Irms) is lower. |
| Dcr Ohm | 0.066Ω | 0.019Ω | 0.084Ω | 0.106Ω | 0.019Ω / 0.084Ω / 0.106Ω / 0.09Ω — Lower DCR improves efficiency.; TFM252012ALVA2R2MTAA: Higher DCR may reduce efficiency.; VLS3012HBX-2R2M: Higher DCR may reduce efficiency.; WPN3012H2R2MT: Higher DCR may reduce efficiency. |
Application & sourcing insights
Questions & answers
The best alternative depends on design priorities. For higher performance, SWPA5040S2R2NT offers better current ratings and lower DCR but in a larger 5.0x5.0mm package with wider tolerance. For smaller footprints, options like TDK's VLS3012HBX-2R2M exist but with lower current ratings.