HEI252012A-1R0M-Q8
Chilisin
Needs validationmedium risk
A form-fit compatible 1.0µH inductor with matching DCR but slightly lower RMS current and a commercial temperature range.
Best Alternatives to TFM252012ALMA1R0MTAA
TDK's TFM252012ALMA1R0MTAA is a 1.0µH automotive-grade power inductor in a 2520 package, designed for high-reliability applications. When seeking alternatives, it's crucial to match its current ratings, low DCR, and wide operating temperature range.
AI replacement insight
Application riskhigh
Target is AEC-Q200 qualified; using a non-automotive part is a major compliance and reliability risk.
Electrical riskmedium
Some form-fit substitutes have slightly lower RMS current ratings that require verification.
Package risklow
Several candidates match the 2520 footprint, making physical replacement straightforward.
Can it be replaced directly?
No direct, one-to-one replacement has been identified. All form-fit compatible candidates have parametric differences, such as lower current ratings or narrower temperature ranges, and lack automotive-grade qualification.
Best replacement path
For form-fit compatibility, consider WPN252012E1R0MT, but verify thermal performance and non-automotive grade. For new designs, WPN4020H1R0MT offers superior electricals in a larger package.
Main risk
The primary risk is replacing an automotive-grade component with a commercial-grade one, which may not meet the required reliability and temperature standards for automotive applications.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | TFM252012ALMA1R0MTAA | HEI252012A-1R0M-Q8 | WPN252012E1R0MT | WPN4020H1R0MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2520 (1008 Metric) | 2520 (1008 Metric) | 2520 (1008 Metric) | 4020 (4.0x4.0mm) | 2520 (1008 Metric) / 4020 (4.0x4.0mm) / 2520 (1.0mm height) — Same footprint and pinout.; WPN252012E1R0MT: Same footprint and pinout.; WPN4020H1R0MT: Larger package, not a drop-in replacement.; WPN252010H1R0MT: Same footprint, lower profile. |
| Inductance | 1.0 µH | 1.0 µH | 1.0 µH | 1.0 µH | 1.0 µH — Inductance value matches.; WPN252012E1R0MT: Inductance value matches.; WPN4020H1R0MT: Inductance value matches. |
| Current | 3.7 A | 3.6 A | 3.5 A | 5.8 A | 3.6 A / 3.5 A / 5.8 A / 2.5 A — Slightly lower RMS current rating (Itemp).; WPN252012E1R0MT: Lower RMS current rating (Itemp).; WPN4020H1R0MT: Significantly higher RMS current rating.; WPN252010H1R0MT: Significantly lower RMS current rating. |
| Saturation Current A | 4.2 A | 4.4 A | 5.0 A | 8.7 A | 4.4 A / 5.0 A / 8.7 A / 3.5 A — Slightly higher saturation current (Isat).; WPN252012E1R0MT: Higher saturation current (Isat).; WPN4020H1R0MT: Significantly higher saturation current.; WPN252010H1R0MT: Lower saturation current. |
| Dcr Ohm | 0.042 Ω | 0.042 Ω | 0.037 Ω | 0.026 Ω | 0.042 Ω / 0.037 Ω / 0.026 Ω / 0.063 Ω — DCR matches target's max value.; WPN252012E1R0MT: Lower DCR improves efficiency.; WPN4020H1R0MT: Lower DCR improves efficiency.; WPN252010H1R0MT: Higher DCR increases power loss. |
| Temperature | -55°C to +150°C | -40°C to +125°C | -40°C to +125°C | - | -40°C to +125°C — Narrower operating range.; WPN252012E1R0MT: Narrower operating range. |
Application & sourcing insights
Questions & answers
For applications that can tolerate commercial grade and a slightly lower RMS current, Sunlord's WPN252012E1R0MT and Chilisin's HEI252012A-1R0M-Q8 are strong candidates with the same package and inductance. Always verify performance in your circuit.