ELC11D101F Equivalent & Substitute Parts

Part Overview

The ELC11D101F is a 100 µH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.8 A with 120 mOhm DC resistance. This through-hole component features a radial, vertical cylinder package configuration. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and new design implementations where this inductor specification remains applicable.

Substiute Parts

ELC11D101F

Panasonic Electronic ComponentsIn Stock: 1161ELC11D101F Datasheet

Current PartRFQ

7447452101

Würth ElektronikIn Stock: 20777447452101 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC11D101F is determined by strict alignment of the following parameters:

• Inductance Value: Must be 100 µH with ±10% tolerance
• Current Rating: Must support minimum 1.8 A
• Core Type: Ferrite drum core, wirewound construction
• Shielding: Unshielded configuration
• Mounting: Through-hole radial, vertical cylinder package
• DC Resistance: Must not exceed specifications that would cause unacceptable power dissipation in the application circuit
• Regulatory Compliance: RoHS compliance required for modern supply chains

The substitute part 7447452101 (Würth Elektronik WE-TI series) meets these core electrical and mechanical requirements, with the exception of increased DC resistance (160 mOhm maximum versus 120 mOhm), which represents a measurable but acceptable trade-off given the active product status and superior availability.

Parameter Comparison

Engineering Selection Recommendations

The 7447452101 (Würth Elektronik WE-TI series) is the qualified substitute for the obsolete ELC11D101F. Selection is based on:

• Active Product Status: The substitute maintains current manufacturing and supply chain support, eliminating obsolescence risk
• Regulatory Alignment: Both components meet RoHS compliance requirements; the substitute achieves ROHS3 certification
• Electrical Equivalence: Identical inductance value, tolerance, and current rating ensure functional compatibility in the target circuit
• Mechanical Compatibility: Both components use radial, vertical cylinder through-hole packages with comparable physical dimensions suitable for standard PCB layouts
• DC Resistance Consideration: The 40 mOhm increase in maximum DCR (160 mOhm versus 120 mOhm) results in proportionally increased power dissipation. Circuit thermal analysis is required to confirm acceptability in applications with tight thermal budgets or continuous high-current operation

Frequently Asked Questions (FAQ)

Q: Can the 7447452101 be used as a direct replacement for the ELC11D101F?

A: Yes, for applications where the increased DC resistance (160 mOhm maximum) does not exceed thermal or efficiency requirements. Both components share identical inductance, tolerance, current rating, core material, and package configuration. Physical dimensions are comparable and compatible with standard through-hole PCB layouts.

Q: What is the impact of the 40 mOhm increase in DC resistance?

A: At 1.8 A continuous current, the ELC11D101F dissipates approximately 389 mW (1.8² × 0.120), while the 7447452101 dissipates approximately 518 mW (1.8² × 0.160). The additional 129 mW dissipation must be evaluated against the thermal design of the application. For low-duty-cycle or intermittent-current applications, this difference may be negligible.

Q: Are there physical mounting differences between these components?

A: Both components use radial, vertical cylinder through-hole packages. The 7447452101 has a slightly smaller diameter (9.50mm versus 11.50mm) and marginally lower seated height (14.60mm versus 13.90mm). These dimensional differences are within typical PCB layout tolerances and do not require design modifications.

Q: What certifications apply to each component?

A: The ELC11D101F carries RoHS Compliant certification. The 7447452101 carries ROHS3 Compliant and REACH Unaffected certifications, providing enhanced regulatory coverage for modern supply chain requirements.

Q: Why is the ELC11D101F obsolete?

A: Product obsolescence is determined by the manufacturer and reflects discontinuation of production. The active status of the 7447452101 ensures continued availability and supply chain stability for new designs and legacy system support.