DFEH7030D-4R7M=P3 Equivalent & Substitute Parts

Part Overview

The DFEH7030D-4R7M=P3 is a 4.7 µH shielded inductor manufactured by Murata Electronics, rated for 4.2 A continuous current with a maximum DC resistance of 41mOhm. This component is classified as Not For New Designs, indicating it has been superseded in Murata's product line. Finding equivalent or substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this specific inductance value and current rating are required.

Substiute Parts

DFEH7030D-4R7M=P3

Murata ElectronicsIn Stock: 1065DFEH7030D-4R7M=P3 Datasheet

Current PartRFQ

HCM1A0703V2-3R3-R

Eaton - Electronics DivisionIn Stock: 1168HCM1A0703V2-3R3-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DFEH7030D-4R7M=P3 is determined by the following critical parameters:

Mechanical Compatibility: Identical package dimensions (7.00mm x 6.60mm x 3.00mm max height) and surface mount mounting type ensure physical interchangeability on PCBs.

Electrical Compatibility: The substitute part must operate within the same inductance tolerance band (±20%), maintain shielded construction to prevent electromagnetic interference, use iron powder core material for consistent performance characteristics, and support the required current rating and saturation current specifications.

Environmental & Compliance: Both parts must maintain AEC-Q200 automotive qualification, operate across the specified temperature range, comply with RoHS3 and REACH regulations, and maintain MSL 1 moisture sensitivity classification.

The substitute part HCM1A0703V2-3R3-R from Eaton - Electronics Division meets these mechanical and environmental criteria. However, the inductance value differs (3.3 µH versus 4.7 µH), which represents a functional deviation that must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The HCM1A0703V2-3R3-R qualifies as a mechanical and environmental substitute based on identical package dimensions, matching shielded iron powder core construction, AEC-Q200 certification, ROHS3 compliance, and MSL 1 classification. The Eaton part is currently in Active product status, ensuring ongoing availability and supply chain continuity compared to the Murata part's Not For New Designs classification.

Electrical performance differences exist: the HCM1A0703V2-3R3-R provides higher current rating (5 A versus 4.2 A), higher saturation current (7.5 A versus 5.6 A), and lower DC resistance (28.5 mOhm versus 41 mOhm). These characteristics represent performance improvements in thermal and current handling capacity.

The inductance differential (3.3 µH versus 4.7 µH) is a functional parameter that must be evaluated against specific circuit design requirements. This substitution is valid only when circuit operation is compatible with the lower inductance value or when design tolerance permits the change within the ±20% specification band.

Frequently Asked Questions (FAQ)

Q: Can the HCM1A0703V2-3R3-R directly replace the DFEH7030D-4R7M=P3 on existing PCBs?

A: Yes, from a mechanical and mounting perspective. Both parts share identical package dimensions (7.00mm x 6.60mm x 3.00mm) and surface mount configuration. However, the different inductance value (3.3 µH versus 4.7 µH) requires circuit-level evaluation to confirm functional compatibility.

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

A: The primary differences are inductance value (4.7 µH versus 3.3 µH), current rating (4.2 A versus 5 A), saturation current (5.6 A versus 7.5 A), DC resistance (41 mOhm versus 28.5 mOhm), and product status (Not For New Designs versus Active). Both maintain identical mechanical form factor, shielding, core material, temperature range, and compliance certifications.

Q: Why is the Murata part classified as Not For New Designs?

A: This classification indicates the DFEH7030D-4R7M=P3 has been superseded in Murata's product portfolio. The designation is used for legacy components that remain available for existing applications but are not recommended for new circuit designs. The Eaton HCM1A0703V2-3R3-R represents an active alternative from a different manufacturer.

Q: Are both parts AEC-Q200 qualified?

A: Yes. Both the DFEH7030D-4R7M=P3 and HCM1A0703V2-3R3-R carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity classification, making them suitable for automotive and industrial applications with equivalent environmental performance.

Q: What is the impact of the lower DC resistance in the substitute part?

A: The HCM1A0703V2-3R3-R exhibits lower DC resistance (28.5 mOhm versus 41 mOhm), resulting in reduced resistive losses and lower heat generation during operation. This represents an improvement in thermal performance and power efficiency compared to the original part.

Q: Does the substitute part support a wider temperature range?

A: Yes. The HCM1A0703V2-3R3-R operates from -55°C to 155°C, compared to the DFEH7030D-4R7M=P3 range of -40°C to 155°C. The substitute part provides extended low-temperature capability, making it suitable for applications requiring operation in colder environments.