ELC11D103F Equivalent & Substitute Parts

Part Overview

The ELC11D103F is a 10 mH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 160 mA with 11.8Ω 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 inductance value and current rating are required.

Substiute Parts

ELC11D103F

Panasonic Electronic ComponentsIn Stock: 1159ELC11D103F Datasheet

Current PartRFQ

RLB9012-103KL

Bourns Inc.In Stock: 20074RLB9012-103KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC11D103F is determined by the following critical parameters:

• Inductance Value: Must be 10 mH ±10% tolerance
• Current Rating: Must support minimum 160 mA operation
• Core Material & Type: Ferrite, unshielded drum core construction
• Mounting Configuration: Through-hole, radial lead orientation
• Package Form Factor: Radial, vertical cylinder geometry
• Electrical Compliance: RoHS compliance status

The RLB9012-103KL from Bourns Inc. meets these substitution criteria. Both components share identical inductance specifications, ferrite drum core construction, through-hole mounting, and radial vertical cylinder packaging. The substitute part exceeds the current rating requirement (170 mA vs. 160 mA) and maintains RoHS compliance through ROHS3 certification.

Parameter Comparison

Engineering Selection Recommendations

The RLB9012-103KL is a qualified substitute for the obsolete ELC11D103F based on the following factors:

Electrical Compatibility: Both components deliver 10 mH inductance with ±10% tolerance. The substitute's 170 mA current rating exceeds the original 160 mA requirement, providing operational margin. The higher DC resistance (25.1Ω vs. 11.8Ω) represents a design trade-off that must be evaluated within the specific circuit context, as increased resistance will affect power dissipation and Q factor characteristics.

Physical & Mechanical Compatibility: Identical through-hole mounting, radial lead configuration, and vertical cylinder package geometry ensure direct PCB footprint compatibility without layout modifications.

Regulatory & Compliance Status: The RLB9012-103KL holds ROHS3 certification, meeting current environmental compliance requirements. The original ELC11D103F carries RoHS Compliant status. Both components satisfy regulatory requirements for new designs and legacy system support.

Availability & Supply Chain: The RLB9012-103KL is in active production with substantial inventory availability (20,000 pcs), whereas the ELC11D103F is obsolete with limited remaining stock (1,099 pcs). This availability differential supports long-term design continuity and procurement reliability.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-103KL directly replace the ELC11D103F in existing designs?

A: Yes, from a mechanical and electrical standpoint. Both components share identical inductance values, core construction, and through-hole radial package geometry. However, the substitute's higher DC resistance (25.1Ω vs. 11.8Ω) will increase power dissipation in the inductor. Circuit performance must be validated to confirm this resistance increase does not adversely affect system operation, particularly in applications sensitive to inductor losses.

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

A: The primary differences are DC resistance (25.1Ω vs. 11.8Ω), current rating (170 mA vs. 160 mA), physical dimensions (9.00mm vs. 11.50mm diameter), and product status (active vs. obsolete). The substitute provides higher current capacity and is currently manufactured, while the original offers lower resistance characteristics.

Q: Are there any package or footprint concerns with substitution?

A: No. Both inductors use identical through-hole radial lead configuration with vertical cylinder geometry. PCB footprints are compatible without modification. Physical dimensions differ slightly (9.00mm vs. 11.50mm diameter, 12.20mm vs. 13.90mm height), but these variations remain within standard through-hole component spacing tolerances.

Q: Does the substitute meet the same compliance standards?

A: Both components are RoHS compliant. The ELC11D103F carries RoHS Compliant certification, while the RLB9012-103KL holds ROHS3 Compliant status, representing current regulatory alignment. Both satisfy environmental compliance requirements for new and legacy applications.

Q: How does the inductance test frequency difference affect compatibility?

A: The ELC11D103F is tested at 10 kHz while the RLB9012-103KL is tested at 1 kHz. Both components are specified at 10 mH with ±10% tolerance. The inductance value remains valid across the frequency range typical for these component types. Application-specific frequency response should be verified if the circuit operates at frequencies significantly different from the test conditions.