ELC-09D472F Equivalent & Substitute Parts

Part Overview

The ELC-09D472F 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 a test frequency of 10 kHz and is classified as obsolete. Due to its obsolete status, equivalent substitute parts with matching or superior electrical characteristics are necessary for ongoing design support and procurement continuity.

Substiute Parts

ELC-09D472F

Panasonic Electronic ComponentsIn Stock: 1139ELC-09D472F Datasheet

Current PartRFQ

744731472

Würth ElektronikIn Stock: 859744731472 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-09D472F is determined by the following critical parameters:

• Inductance Value: Must be 4.7 mH with ±10% tolerance
• Current Rating: Minimum 120 mA; higher ratings provide design margin
• DC Resistance: Must not exceed 11.2Ohm significantly; values up to 11.4Ohm remain acceptable
• Mounting Type: Through-hole radial configuration required
• Package Compatibility: Radial, vertical cylinder form factor
• Compliance: ROHS3 compliance mandatory for regulatory alignment

The Würth Elektronik 744731472 qualifies as a direct substitute based on matching inductance, tolerance, mounting type, and package configuration. The substitute demonstrates improved current handling (160 mA vs. 120 mA) and includes shielding, which provides electromagnetic interference mitigation without compromising core electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The 744731472 from Würth Elektronik is the qualified substitute for the obsolete ELC-09D472F. Selection is based on:

• Electrical Equivalence: Identical inductance value and tolerance ensure circuit performance parity
• Current Capacity: The 160 mA rating exceeds the original 120 mA specification, providing operational margin
• Resistance Profile: DC resistance of 11.4Ohm maximum remains within acceptable tolerance of the original 11.2Ohm
• Regulatory Compliance: Both components maintain ROHS3 compliance
• Availability: The substitute is in active production status, ensuring long-term procurement viability
• Physical Compatibility: Matching through-hole radial package enables direct board-level substitution

The addition of shielding in the substitute part provides enhanced electromagnetic compatibility without introducing incompatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can the 744731472 be used as a direct replacement for the ELC-09D472F?

A: Yes. Both components share identical inductance (4.7 mH), tolerance (±10%), mounting type (through-hole), and package configuration (radial, vertical cylinder). The substitute meets or exceeds all critical electrical parameters.

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

A: The 744731472 is rated for 160 mA versus the original 120 mA. This provides additional design margin and reduces thermal stress during operation. The higher rating does not create incompatibility; it simply allows the component to handle greater current loads.

Q: Does the shielding in the substitute part affect circuit operation?

A: No. Shielding reduces electromagnetic interference emission and susceptibility. It does not alter the core inductance value or electrical performance. The shielded design is compatible with circuits designed for unshielded inductors.

Q: Are there dimensional differences between the two parts?

A: Yes. The substitute (744731472) has a smaller footprint: 0.307" diameter (7.80mm) versus 0.374" (9.50mm), and 0.295" height (7.50mm) versus 0.350" (8.90mm). Both maintain radial, vertical cylinder configuration and through-hole mounting. Board layout verification is recommended to confirm fit.

Q: What compliance certifications apply to both parts?

A: Both the ELC-09D472F and 744731472 are ROHS3 compliant. The substitute additionally carries REACH Unaffected status.

Q: Why is the original part obsolete?

A: The ELC-09D472F is classified as obsolete by Panasonic Electronic Components. The 744731472 is in active production, ensuring continued availability and supply chain stability.