Is there a pin-compatible replacement for 1239AS-H-2R2M=P2?

Yes, DFE252012P-2R2M=P2 is a pin-compatible upgrade in the same 2520 package. DFE252010P-2R2M=P2 is also pin-compatible but has a lower current rating and requires careful review.

What risks should I check before replacing 1239AS-H-2R2M=P2?

Before replacing, verify the substitute's inductance, DC resistance (DCR), saturation current (Isat), and especially the RMS current (Irms) to ensure they meet or exceed your application's requirements.

1239AS-H-2R2M=P2 Alternatives, Datasheet & Cross Reference | Murata Manufacturing Co., Ltd.

The Murata 1239AS-H-2R2M=P2 is a 2.2µH shielded power inductor in a 2520 package. This analysis identifies and compares potential replacements, including a direct upgrade path.

AI replacement insight

Package risklow

Several alternatives exist in the same 2520 package.

Electrical riskmedium

Care must be taken to select a part with equal or better current ratings (Isat and Irms).

Can it be replaced directly?

Yes, DFE252012P-2R2M=P2 is a strong candidate for direct replacement, providing improved efficiency and current handling.

Best replacement path

DFE252012P-2R2M=P2 is the recommended upgrade path, offering better performance in all key electrical parameters.

Main risk

The main risk when substituting is using a part with a lower RMS current rating (Irms), which can lead to overheating and failure.

Recommended alternatives

A strong upgrade with lower resistance and higher current ratings in the same 2520 package.

View details

Alternative comparison matrix

Feature / factor	1239AS-H-2R2M=P2	DFE252012P-2R2M=P2	DFE252010P-2R2M=P2	Compatibility / risk
Inductance	2.2µH	2.2µH	2.2µH	2.2µH — Inductance value matches.; DFE252010P-2R2M=P2: Inductance value matches.
Dcr Ohm	108mΩ	84mΩ	115mΩ	84mΩ / 115mΩ — Lower DCR improves efficiency.; DFE252010P-2R2M=P2: Higher DCR increases power loss.
Saturation Current A	2.2A	3.0A	2.6A	3.0A / 2.6A — Higher saturation current provides more headroom.; DFE252010P-2R2M=P2: Higher saturation current.
Current A	2.0A	2.2A	1.7A	2.2A / 1.7A — Higher RMS current rating.; DFE252010P-2R2M=P2: Lower RMS current rating is a significant risk.
Temperature	-40°C to +85°C	-40°C to +125°C	-	-40°C to +125°C — Wider operating temperature range.
Package	2520	2520	2520	2520 — Package size is identical.; DFE252010P-2R2M=P2: Package size is identical.

Application & sourcing insights

Questions & answers

DFE252012P-2R2M=P2 is the best alternative. It is a direct upgrade in the same package, with higher current ratings and lower resistance for better performance.