ELC-09D472DF Equivalent & Substitute Parts

Part Overview

The ELC-09D472DF is a 4.7 mH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 120 mA continuous current with 11.2Ohm DC resistance. This through-hole radial component operates at 10 kHz test frequency and is classified as obsolete. Due to its discontinued status, equivalent substitute parts with matching or superior electrical characteristics are necessary for design continuity and procurement.

Substiute Parts

ELC-09D472DF

Panasonic Electronic ComponentsIn Stock: 1005ELC-09D472DF Datasheet

Current PartRFQ

744731472

Würth ElektronikIn Stock: 859744731472 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ELC-09D472DF is determined by the following critical parameters:

• Inductance Value: 4.7 mH (±10% tolerance acceptable)
• Current Rating: Minimum 120 mA; higher ratings provide design margin
• DC Resistance: Maximum 11.2Ohm; values up to 11.4Ohm remain within acceptable operating range
• Mounting Type: Through-hole radial configuration required
• Package Compatibility: Radial, vertical cylinder form factor
• Regulatory Compliance: ROHS3 compliance mandatory

The Würth Elektronik 744731472 meets all substitution criteria with equivalent inductance, higher current rating (160 mA), comparable DC resistance (11.4Ohm max), and active product status ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744731472 is the qualified substitute for the obsolete ELC-09D472DF. Selection rationale:

• Electrical Equivalence: Identical inductance value and tolerance with marginally higher DC resistance (0.2Ohm difference) within acceptable limits
• Current Capacity: 160 mA rating exceeds the original 120 mA requirement, providing operational headroom
• Regulatory Compliance: Both parts maintain ROHS3 compliance; substitute adds REACH Unaffected status
• Product Availability: Active status ensures sustained procurement and supply chain reliability
• Form Factor Compatibility: Identical through-hole radial mounting and package geometry permit direct board-level substitution

Frequently Asked Questions (FAQ)

Q: Can the 744731472 be used as a direct replacement for the ELC-09D472DF?

A: Yes. Both inductors share identical inductance values, tolerance specifications, mounting type, and package geometry. The substitute's higher current rating and active product status make it suitable for direct substitution.

Q: What is the significance of the 0.2Ohm difference in DC resistance?

A: The DC resistance difference (11.2Ohm vs. 11.4Ohm) represents a 1.8% variance, well within the ±10% inductance tolerance band. This minimal difference does not affect circuit performance in standard applications.

Q: Does the shielding difference impact substitution?

A: The substitute (744731472) features shielded construction versus the original unshielded design. Shielding reduces electromagnetic interference emission and susceptibility, making it suitable for noise-sensitive applications. In applications where unshielded operation is specifically required, shielding does not create incompatibility.

Q: Are there packaging considerations for PCB assembly?

A: Both parts use identical radial, vertical cylinder packaging for through-hole mounting. No PCB layout modifications are required for substitution.

Q: What is the operating temperature range for the substitute?

A: The 744731472 operates across -40°C to 125°C, providing extended temperature coverage compared to the original part's unspecified range.