ELC-11D681DF Equivalent & Substitute Parts

Part Overview

The ELC-11D681DF is a 680 µH unshielded through-hole inductor manufactured by Panasonic Electronic Components, rated for 640 mA with a DC resistance of 780mOhm. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity. Substitute parts must maintain the same inductance value, voltage rating capability, and through-hole mounting configuration while meeting or exceeding the current handling requirements of the original specification.

Substiute Parts

ELC-11D681DF

Panasonic Electronic ComponentsIn Stock: 1098ELC-11D681DF Datasheet

Current PartRFQ

7447480681

Würth ElektronikIn Stock: 13587447480681 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-11D681DF is determined by the following critical parameters:

• Inductance Value: 680 µH ±10% tolerance
• Current Rating: Minimum 640 mA; higher ratings are acceptable
• DC Resistance: Maximum 780mOhm; lower values are acceptable
• Mounting Configuration: Through-hole radial, vertical cylinder package
• Shielding: Unshielded construction
• Compliance: ROHS3 compliant

The substitute part 7447480681 (Würth Elektronik WE-TI series) meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 7447480681 (Würth Elektronik WE-TI series) is a direct functional substitute for the obsolete ELC-11D681DF. Both components are ROHS3 compliant and carry MSL rating of 1 (Unlimited). The substitute part provides superior current handling capability (900 mA versus 640 mA) and equivalent DC resistance characteristics, making it suitable for direct replacement in through-hole applications requiring 680 µH inductance.

The Würth Elektronik part is currently in active production status with confirmed inventory availability, providing supply chain continuity for designs previously using the Panasonic component.

Frequently Asked Questions (FAQ)

Q: Can the 7447480681 be used as a direct pin-for-pin replacement?

A: Yes. Both components feature identical through-hole radial, vertical cylinder mounting configurations and equivalent electrical specifications for inductance and DC resistance. Physical dimensions are comparable, with the substitute part having a slightly larger diameter (10.50mm versus 9.50mm) and height (14.50mm versus 8.90mm). Verify PCB layout clearance before substitution.

Q: What is the significance of the higher current rating on the substitute part?

A: The 7447480681 is rated for 900 mA continuous current compared to the original 640 mA rating. This provides additional design margin and thermal headroom in the application. The substitute will not degrade performance in circuits designed for the lower current specification.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited). The substitute part includes REACH Unaffected status, providing additional regulatory documentation for supply chain compliance.

Q: How do the DC resistance values compare?

A: The ELC-11D681DF specifies 780mOhm, while the 7447480681 specifies 790mOhm maximum. This 10mOhm difference is within acceptable tolerance for inductor applications and will not produce measurable performance variation in typical circuit implementations.

Q: What packaging format is the substitute available in?

A: The 7447480681 is supplied in tray packaging, compared to the original part's unspecified packaging. Confirm packaging requirements with your procurement process.