ELL-6RH7R5M Equivalent & Substitute Parts

Part Overview

The ELL-6RH7R5M is a 7.5 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.25 A with 80mOhm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part is RoHS compliant and features unlimited moisture sensitivity rating (MSL 1), suitable for surface mount assembly in compact form factors.

Substiute Parts

ELL-6RH7R5M

Panasonic Electronic ComponentsIn Stock: 1030ELL-6RH7R5M Datasheet

Current PartRFQ

744052007

Würth ElektronikIn Stock: 1223744052007 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-6RH7R5M is determined by the following critical parameters:

• Inductance Value: Must match 7.5 µH at 100 kHz test frequency
• Current Rating: Must meet or exceed 1.25 A minimum requirement
• DC Resistance: Must not significantly exceed 80mOhm to maintain circuit performance
• Shielding: Must be shielded to prevent electromagnetic interference
• Mounting Type: Must be surface mount compatible
• Physical Compatibility: Package dimensions and height must accommodate existing PCB layouts

The Würth Elektronik 744052007 qualifies as a functional equivalent based on matching inductance value, exceeding current rating (1.35 A vs. 1.25 A), comparable DC resistance (90mOhm vs. 80mOhm), and shielded construction. The substitute maintains surface mount compatibility with active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744052007 is the primary substitute for the obsolete ELL-6RH7R5M. Selection should be based on the following factors:

Product Status: The ELL-6RH7R5M is obsolete, while the 744052007 maintains active product status with ongoing manufacturer support and availability.

Compliance: Both parts are RoHS compliant. The 744052007 carries ROHS3 compliance with REACH unaffected status, providing enhanced regulatory alignment for current manufacturing standards.

Electrical Performance: The 744052007 exceeds the current rating requirement (1.35 A vs. 1.25 A) and provides saturation current specification (1.5 A), offering improved design margin. DC resistance is marginally higher (90mOhm vs. 80mOhm), representing a 12.5% increase that remains acceptable for most applications requiring 7.5 µH inductance.

Physical Considerations: The substitute features a smaller footprint (5.80mm x 5.80mm vs. 6.40mm x 6.00mm) and reduced height (2.00mm vs. 2.80mm). PCB layout verification is required to confirm compatibility with existing design constraints.

Temperature Range: The 744052007 specifies operating temperature range (-40°C ~ 125°C), whereas the original part does not. This provides defined thermal performance for applications requiring temperature stability.

Frequently Asked Questions (FAQ)

Q: Can the 744052007 directly replace the ELL-6RH7R5M without circuit modification?

A: The 744052007 matches the critical electrical parameters (7.5 µH inductance, shielded construction, surface mount compatibility). However, physical dimensions differ: the substitute is smaller in footprint and height. PCB layout compatibility must be verified before implementation. The 12.5% higher DC resistance (90mOhm vs. 80mOhm) may require thermal analysis in current-limited applications.

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

A: The primary differences are product status (obsolete vs. active), core construction (wirewound vs. drum core wirewound with ferrite), inductance tolerance (±20% vs. ±30%), and physical dimensions. The 744052007 provides saturation current specification and defined operating temperature range, which the original part does not specify.

Q: Is the higher DC resistance of the 744052007 a concern?

A: The 90mOhm DCR of the 744052007 represents a 12.5% increase over the 80mOhm specification of the ELL-6RH7R5M. For applications operating at or near the 1.25 A rating, this difference results in proportionally higher resistive losses. Circuit thermal analysis is recommended for current-critical designs.

Q: Are there packaging considerations for PCB assembly?

A: Yes. The ELL-6RH7R5M uses a nonstandard package, while the 744052007 uses the standardized 2323 (5858 Metric) package. The substitute is physically smaller (5.80mm x 5.80mm footprint, 2.00mm height vs. 6.40mm x 6.00mm footprint, 2.80mm height). Verify PCB land pattern compatibility and clearance requirements before design implementation.

Q: What is the inductance tolerance difference impact?

A: The ELL-6RH7R5M specifies ±20% tolerance, while the 744052007 specifies ±30%. This wider tolerance on the substitute may affect circuit performance in applications with tight inductance requirements. Measure or select parts within tighter tolerance bands if circuit design margins are limited.

Q: Are both parts suitable for high-frequency applications?

A: The 744052007 specifies a self-resonant frequency of 45 MHz, providing defined high-frequency performance. The ELL-6RH7R5M does not specify this parameter. For applications operating above 10 MHz, the 744052007 offers better-defined performance characteristics.