ELC-18B180L Equivalent & Substitute Parts

Part Overview

The ELC-18B180L is an 18 µH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components. This through-hole component is rated for 5.6 A continuous current with a DC resistance of 22 mOhm and operates at a test frequency of 10 kHz. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Inductance	18 µH
Current Rating	5.6 A
DC Resistance (DCR)	22 mOhm
Tolerance	±20%
Core Type	Ferrite, Unshielded
Mounting Type	Through Hole
Package Type	Radial, Vertical Cylinder (Open)
Size	0.787" Dia (20.00 mm)
Height	1.063" (27.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-18B180L is determined by the following critical parameters:

Inductance Value: Must be 18 µH (exact match required)
Core Material & Shielding: Ferrite, unshielded construction
Mounting Configuration: Through-hole radial package
Current Rating: Must meet or exceed 5.6 A
DC Resistance: Should not significantly exceed 22 mOhm to maintain circuit performance
Regulatory Compliance: ROHS3 compliance required

The substitute part 1110-180K-RC from Bourns Inc. meets these criteria with improved electrical performance characteristics.

Parameter Comparison

Parameter	ELC-18B180L (Panasonic)	1110-180K-RC (Bourns)	Compatibility
Inductance	18 µH	18 µH	Match
Tolerance	±20%	±10%	Substitute tighter
Current Rating	5.6 A	7.2 A	Substitute exceeds
DC Resistance	22 mOhm	16 mOhm Max	Substitute lower
Core Type	Ferrite, Unshielded	Ferrite, Unshielded	Match
Mounting Type	Through Hole	Through Hole	Match
Package	Radial, Vertical Cylinder (Open)	Radial	Compatible
Operating Temperature	Not specified	-55°C ~ 105°C	Substitute specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Obsolete	Active	Substitute active

Engineering Selection Recommendations

The 1110-180K-RC from Bourns Inc. is a direct functional substitute for the obsolete ELC-18B180L. Both components share identical inductance values, ferrite core construction, and through-hole radial mounting configuration. The Bourns part offers superior electrical performance with a higher current rating (7.2 A versus 5.6 A), lower DC resistance (16 mOhm Max versus 22 mOhm), and tighter inductance tolerance (±10% versus ±20%). Both parts maintain ROHS3 compliance and are suitable for equivalent circuit applications. The Bourns component is currently in active production status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 1110-180K-RC directly replace the ELC-18B180L in existing designs?

A: Yes. Both components have identical 18 µH inductance values, ferrite unshielded cores, and through-hole radial mounting. The Bourns part meets all electrical requirements of the original Panasonic component.

Q: What are the physical dimension differences?

A: The ELC-18B180L measures 0.787" diameter × 1.063" height. The 1110-180K-RC measures 0.660" diameter × 0.840" height. The substitute is physically smaller and will fit in the same PCB footprint with clearance margin.

Q: Does the lower DC resistance of the substitute affect circuit operation?

A: No. Lower DC resistance (16 mOhm Max versus 22 mOhm) reduces power dissipation and improves efficiency. This is a beneficial characteristic for direct substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both the ELC-18B180L and 1110-180K-RC are ROHS3 compliant, meeting environmental and regulatory requirements.

Q: Why is the ELC-18B180L classified as obsolete?

A: Panasonic has discontinued this product line. The 1110-180K-RC from Bourns provides equivalent functionality with active production status and improved specifications.

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