ELC-09D470DF Equivalent & Substitute Parts

Part Overview

The ELC-09D470DF is a 47 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.2 A with 110mOhm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, maintenance, and production continuity. The part operates in through-hole radial vertical cylinder configuration and is ROHS3 compliant.

Substiute Parts

ELC-09D470DF

Panasonic Electronic ComponentsIn Stock: 903ELC-09D470DF Datasheet

Current PartRFQ

RL875-470K-RC

Bourns Inc.In Stock: 1162RL875-470K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-09D470DF is determined by the following critical parameters:

Inductance Value: 47 µH (±10% tolerance band allows 42.3 µH to 51.7 µH)

Current Rating: Minimum 1.2 A required; substitute parts with equal or higher current ratings are acceptable

DC Resistance: 110mOhm baseline; substitutes with DCR ≤ 150mOhm are functionally compatible within circuit thermal and efficiency margins

Mounting Configuration: Through-hole radial vertical cylinder package required for PCB footprint compatibility

Shielding: Unshielded specification must be maintained to preserve circuit performance characteristics

Compliance: ROHS3 compliance required for regulatory alignment

The RL875-470K-RC from Bourns Inc. meets all substitution criteria: identical 47 µH inductance, higher current rating (1.3 A vs. 1.2 A), compatible DCR (150mOhm max vs. 110mOhm), matching through-hole radial vertical cylinder package, unshielded configuration, and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The RL875-470K-RC qualifies as a direct substitute for the obsolete ELC-09D470DF based on electrical parameter alignment and regulatory compliance. Both components are ROHS3 compliant and maintain identical inductance and tolerance specifications. The Bourns part provides superior current handling (1.3 A vs. 1.2 A), offering design margin for thermal and reliability considerations. The DCR differential (150mOhm max vs. 110mOhm) remains within acceptable engineering tolerances for most power conversion and filtering applications. The RL875-470K-RC is currently active in production with confirmed inventory availability, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the RL875-470K-RC be used as a direct replacement for the ELC-09D470DF?

A: Yes. Both components share identical inductance (47 µH), tolerance (±10%), shielding (unshielded), and through-hole radial vertical cylinder package configuration. The Bourns part meets or exceeds all electrical requirements of the Panasonic component.

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

A: The RL875-470K-RC is rated for 1.3 A compared to the ELC-09D470DF at 1.2 A. This provides additional thermal margin and design headroom without compromising circuit performance. The substitute can safely handle the original design current with reduced thermal stress.

Q: How does the DCR difference affect circuit performance?

A: The RL875-470K-RC specifies 150mOhm maximum DCR versus 110mOhm for the original part. This 40mOhm increase results in minimal power dissipation change in typical applications. At 1.2 A operation, the additional loss is approximately 0.058 mW, which is negligible in most filtering and power conversion circuits.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the ELC-09D470DF and RL875-470K-RC are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the physical size difference between these inductors?

A: The ELC-09D470DF measures 0.374" diameter (9.50mm) with 0.350" seated height (8.90mm). The RL875-470K-RC is slightly smaller at 0.307" diameter (7.80mm) with 0.295" seated height (7.50mm). Both maintain radial vertical cylinder configuration and are compatible with standard through-hole PCB layouts, though the smaller footprint of the substitute may provide minor board space benefits.