DFEG10040D-220M=P3 Equivalent & Substitute Parts

Part Overview

The DFEG10040D-220M=P3 is a 22 µH shielded inductor manufactured by Murata Electronics, rated for 3.8 A continuous current with a maximum DC resistance of 70mOhm. This component is designed for surface mount applications in circuits requiring fixed inductance filtering, energy storage, or signal conditioning. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing production support and design continuity.

Substiute Parts

DFEG10040D-220M=P3

Murata ElectronicsIn Stock: 841DFEG10040D-220M=P3 Datasheet

Current PartRFQ

HCMA1305-220-R

Eaton - Electronics DivisionIn Stock: 1221HCMA1305-220-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DFEG10040D-220M=P3 is determined by the following critical parameters:

Inductance Value: 22 µH with ±20% tolerance is the primary functional requirement. Substitute parts must maintain this inductance specification.

Current Rating: The main part supports 3.8 A continuous current. Substitute parts must meet or exceed this current rating to ensure safe operation without thermal stress or saturation.

DC Resistance (DCR): The 70 mOhm maximum specification defines acceptable power loss characteristics. Substitute parts with lower DCR values provide improved efficiency and reduced heat generation.

Shielding: The shielded construction minimizes electromagnetic interference. Substitute parts must maintain shielded configuration for equivalent EMI performance.

Core Material: Iron powder core construction is specified. Substitute parts using equivalent core materials with similar saturation and temperature characteristics are acceptable.

Operating Temperature Range: The -40°C to 125°C range defines environmental compatibility. Substitute parts must support this temperature envelope.

Surface Mount Configuration: The component is surface mount only. Substitute parts must use compatible surface mount packaging.

Compliance Standards: AEC-Q200 rating and ROHS3 compliance are mandatory for automotive and regulated applications.

The HCMA1305-220-R from Eaton Electronics Division meets all critical substitution criteria while offering enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The HCMA1305-220-R is a direct functional substitute for the obsolete DFEG10040D-220M=P3. Both components maintain identical inductance values and tolerance specifications, ensuring equivalent circuit performance.

The substitute part provides superior electrical characteristics: the 6.2 A current rating exceeds the main part's 3.8 A specification by 63%, and the 51.8 mOhm maximum DCR is 26% lower than the main part's 70 mOhm specification. These improvements result in reduced thermal dissipation and enhanced design margin.

The HCMA1305-220-R operates across an extended temperature range (-55°C to 125°C versus -40°C to 125°C), providing broader environmental compatibility. Both components maintain AEC-Q200 certification and ROHS3 compliance, meeting automotive and regulated application requirements.

Physical dimensions differ: the substitute part measures 13.30mm × 12.20mm × 5.00mm compared to the main part's 10.90mm × 10.00mm × 4.00mm. PCB layout verification is required to confirm footprint compatibility before implementation.

The substitute part is actively manufactured and available in standard Tape & Reel packaging, ensuring supply chain continuity and production support.

Frequently Asked Questions (FAQ)

Q: Can the HCMA1305-220-R directly replace the DFEG10040D-220M=P3 in existing designs?

A: Electrical substitution is valid. Both components provide 22 µH inductance with ±20% tolerance and maintain identical core material and shielding specifications. Physical dimensions differ, requiring PCB layout verification before implementation. The substitute part's superior current rating and lower DCR provide improved performance margins.

Q: What are the key differences between these two inductors?

A: The primary differences are current rating (6.2 A versus 3.8 A), DC resistance (51.8 mOhm versus 70 mOhm), operating temperature range (-55°C to 125°C versus -40°C to 125°C), and physical dimensions. The substitute part offers enhanced electrical performance and broader environmental compatibility.

Q: Are both parts suitable for automotive applications?

A: Yes. Both components carry AEC-Q200 certification, qualifying them for automotive use. Both maintain ROHS3 compliance and MSL 1 moisture sensitivity rating.

Q: What is the impact of the larger package size of the HCMA1305-220-R?

A: The substitute part measures 13.30mm × 12.20mm × 5.00mm versus the main part's 10.90mm × 10.00mm × 4.00mm. PCB layout must accommodate the larger footprint. Verify available board space and component placement clearances before design implementation.

Q: Does the lower DC resistance of the substitute part affect circuit operation?

A: Lower DC resistance reduces power dissipation and heat generation, improving efficiency. This change is beneficial and does not negatively impact circuit function. The substitute part's 51.8 mOhm maximum DCR is within acceptable limits for equivalent inductor performance.

Q: What is the significance of the extended temperature range in the substitute part?

A: The HCMA1305-220-R operates from -55°C to 125°C compared to the main part's -40°C to 125°C range. This extended lower temperature limit provides additional design margin for applications operating in cold environments or with stringent thermal specifications.

Q: Is the substitute part available in the same packaging format?

A: The substitute part is supplied in Tape & Reel (TR) format, which is standard for high-volume production. The main part's packaging format was not specified. Verify packaging compatibility with your assembly process requirements.