ELL-6SH121M Equivalent & Substitute Parts

Part Overview

The ELL-6SH121M is a 120 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 370 mA with a DC resistance of 750mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part is surface mount, nonstandard package, and ROHS3 compliant with MSL 1 rating.

Substiute Parts

ELL-6SH121M

Panasonic Electronic ComponentsIn Stock: 884ELL-6SH121M Datasheet

Current PartRFQ

SPD62R-124M

API Delevan Inc.In Stock: 1009SPD62R-124M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-6SH121M is determined by the following critical parameters:

• Inductance value: 120 µH (±20% tolerance acceptable)
• Current rating: minimum 370 mA
• Shielding: required
• Mounting type: Surface Mount
• RoHS compliance: ROHS3 Compliant
• Package form factor: nonstandard surface mount

The SPD62R-124M meets these substitution criteria with matching inductance (120 µH), higher current rating (390 mA), shielded construction, surface mount configuration, and ROHS3 compliance. The substitute part uses a drum core ferrite construction versus the original wirewound design, which is acceptable within the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The SPD62R-124M is qualified as a direct substitute for the ELL-6SH121M based on the following factors:

• Both parts maintain identical inductance specifications (120 µH ±20%)
• The substitute provides equal or superior current handling (390 mA vs. 370 mA)
• Both components are ROHS3 compliant and carry MSL 1 rating
• The substitute part is in active production status, ensuring long-term availability
• Physical dimensions are compatible within typical PCB layout tolerances (footprint variation <0.01" in length and width)
• Both parts feature shielded construction for EMI performance

The primary design consideration is the increased DC resistance of the substitute part (1.7Ohm Max vs. 750mOhm). This parameter must be evaluated against circuit requirements for power dissipation and voltage drop characteristics.

Frequently Asked Questions (FAQ)

Q: Can SPD62R-124M directly replace ELL-6SH121M without PCB modification?

A: Physical footprint compatibility is high, with dimensional variation within 0.01" for length and width. Height difference (3.00mm vs. 3.30mm) is negligible for most applications. PCB layout verification is recommended to confirm clearance.

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

A: The SPD62R-124M exhibits 1.7Ohm Max DCR compared to 750mOhm in the original part. This 2.27x increase affects power dissipation and voltage drop. Circuit analysis is required to determine if this parameter change is acceptable for the application.

Q: Are both parts suitable for the same operating temperature range?

A: The ELL-6SH121M does not specify an operating temperature range in the provided data. The SPD62R-124M operates from -55°C to 125°C. Temperature performance must be verified against application requirements.

Q: What is the difference between wirewound and drum core construction?

A: The original ELL-6SH121M uses wirewound construction, while the SPD62R-124M uses drum core ferrite construction. Both achieve the same inductance and current specifications. Core material differences may affect frequency response and EMI characteristics, which should be evaluated for specific circuit applications.

Q: Are both parts available in the same packaging format?

A: The ELL-6SH121M is supplied in nonstandard package configuration. The SPD62R-124M is available in Tape & Reel (TR) packaging. Reel specifications and tape format should be confirmed with the supplier for automated assembly compatibility.