ELC-09D2R7DF Equivalent & Substitute Parts

Part Overview

The ELC-09D2R7DF is a 2.7 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 3.3 A with 13mOhm DC resistance. This through-hole radial component operates at 10 kHz inductance test frequency and is housed in a vertical cylinder package measuring 0.374" diameter by 0.350" height.

The product is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for applications utilizing this inductor specification.

Substiute Parts

ELC-09D2R7DF

Panasonic Electronic ComponentsIn Stock: 1000ELC-09D2R7DF Datasheet

Current PartRFQ

B82144B2272K000

EPCOS - TDK ElectronicsIn Stock: 2106B82144B2272K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-09D2R7DF is determined by the following critical parameters:

Inductance Value: The substitute must maintain 2.7 µH inductance. Tolerance variations between ±20% (main part) and ±10% (substitute) are acceptable as both fall within standard inductor tolerance ranges and do not prevent functional equivalence.

Current Rating: The substitute current rating must meet or exceed the 3.3 A requirement. The B82144B2272K000 provides 4.65 A, satisfying this criterion with margin.

DC Resistance: The substitute DCR of 60mOhm is higher than the main part's 13mOhm. This represents a measurable difference in power dissipation characteristics but remains within acceptable substitution parameters for through-hole wirewound inductors in this inductance class.

Mounting and Package: Both parts are through-hole mounted in radial, vertical cylinder configurations, ensuring mechanical and electrical compatibility in PCB layouts designed for the original component.

Compliance: Both parts maintain ROHS3 compliance, supporting regulatory requirements for equivalent component selection.

Parameter Comparison

Engineering Selection Recommendations

The B82144B2272K000 is a direct functional equivalent for the obsolete ELC-09D2R7DF based on matching inductance value, compatible current rating, and identical mounting configuration. The substitute part is manufactured by EPCOS - TDK Electronics and maintains active product status, ensuring ongoing availability and supply chain support.

Both components are ROHS3 compliant, satisfying regulatory requirements for equivalent component substitution. The B82144B2272K000 offers improved tolerance specification (±10% versus ±20%), which may provide tighter inductance control in applications requiring precision.

The increased DC resistance of the substitute (60mOhm maximum versus 13mOhm) represents the primary electrical difference. Applications sensitive to inductor power dissipation or thermal performance should evaluate this parameter against circuit requirements before final selection.

Frequently Asked Questions (FAQ)

Q: Can the B82144B2272K000 directly replace the ELC-09D2R7DF in existing designs?

A: Yes. Both components share identical inductance value (2.7 µH), unshielded configuration, through-hole mounting, and radial vertical cylinder package geometry. The substitute meets the current rating requirement and maintains mechanical compatibility with PCB layouts designed for the original part.

Q: What is the significance of the DCR difference between these parts?

A: The ELC-09D2R7DF has 13mOhm DCR while the B82144B2272K000 has 60mOhm maximum DCR. This difference affects power dissipation and thermal characteristics. In applications where inductor losses are critical to circuit performance, thermal analysis should confirm the substitute's suitability.

Q: Are there packaging or inventory considerations for substitution?

A: The B82144B2272K000 is supplied in Cut Tape (CT) packaging and is currently in active production with 2031 pieces in stock. The original ELC-09D2R7DF is obsolete with 901 pieces available. The substitute's active status provides long-term supply security.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ELC-09D2R7DF and B82144B2272K000 are ROHS3 compliant. The substitute additionally carries REACH Affected status. Both share identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Q: What tolerance difference exists between these inductors?

A: The ELC-09D2R7DF specifies ±20% tolerance while the B82144B2272K000 specifies ±10% tolerance. The tighter tolerance of the substitute may provide improved inductance consistency in applications requiring precision control.