ELC-18B330L Equivalent & Substitute Parts

Part Overview

The ELC-18B330L is a 33 µH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 4.6 A continuous current with 30mOhm DC resistance. This through-hole component is designed for radial, vertical cylinder mounting in applications requiring fixed inductance filtering and energy storage.

The ELC-18B330L carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for legacy systems and new designs requiring compatible performance characteristics.

Substiute Parts

ELC-18B330L

Panasonic Electronic ComponentsIn Stock: 1027ELC-18B330L Datasheet

Current PartRFQ

AIUR-15-330K

Abracon LLCIn Stock: 770AIUR-15-330K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELC-18B330L are identified based on the following critical parameters that determine functional equivalence:

• Inductance Value: 33 µH (exact match required)
• Inductance Tolerance: ±10% (matching tolerance band)
• Current Rating: Minimum 4.6 A (equal or greater acceptable)
• DC Resistance (DCR): Maximum 30mOhm baseline (higher values acceptable within design margin)
• Core Material: Ferrite drum core, unshielded
• Mounting Type: Through hole
• Package / Case: Radial, vertical cylinder (open)
• Compliance: ROHS3 compliant, MSL 1

The AIUR-15-330K from Abracon LLC meets all substitution criteria with equivalent inductance, tolerance, and mounting configuration. The substitute part provides higher current rating (4.8 A vs. 4.6 A) and operates within specified temperature range, making it suitable for direct replacement in applications where the ELC-18B330L is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The AIUR-15-330K is a direct functional substitute for the ELC-18B330L based on matching inductance value, tolerance, core material, and mounting configuration. Both components are ROHS3 compliant with MSL 1 rating, ensuring regulatory and environmental compatibility.

The AIUR-15-330K carries active product status, providing assured long-term availability compared to the obsolete ELC-18B330L. The substitute part's higher current rating (4.8 A) and operating temperature range (-25°C ~ 85°C) support broader application flexibility without performance degradation.

The 8mOhm increase in maximum DC resistance (38mOhm vs. 30mOhm) remains within acceptable design margins for most filtering and energy storage applications. Physical dimensions differ slightly (0.709" Dia vs. 0.787" Dia; 0.787" Height vs. 1.063" Height), requiring verification of PCB layout and mechanical clearance in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the AIUR-15-330K replace the ELC-18B330L in existing designs?

A: Yes. Both components share identical inductance value (33 µH), tolerance (±10%), core material (ferrite drum core, unshielded), and mounting type (through hole). The substitute part's higher current rating (4.8 A) and active product status make it suitable for direct replacement. Physical dimensions must be verified for PCB layout compatibility.

Q: What is the impact of the 8mOhm increase in DC resistance?

A: The AIUR-15-330K maximum DCR of 38mOhm compared to the ELC-18B330L 30mOhm represents an 8mOhm increase. This difference is acceptable for filtering and energy storage applications where DCR tolerance is typically ±20% or greater. Circuit performance impact depends on application-specific current levels and thermal requirements.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the ELC-18B330L and AIUR-15-330K are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level). The AIUR-15-330K additionally carries REACH Unaffected status, confirming compliance with chemical substance regulations.

Q: What are the physical dimension differences?

A: The ELC-18B330L measures 0.787" diameter (20.00mm) with 1.063" seated height (27.00mm). The AIUR-15-330K measures 0.709" diameter (18.00mm) with 0.787" seated height (20.00mm). The substitute part is smaller in both dimensions, requiring verification that existing PCB footprints and mechanical clearances accommodate the reduced size.

Q: Is the AIUR-15-330K available in the same packaging format?

A: The AIUR-15-330K is supplied in bulk packaging, while the ELC-18B330L packaging format is not specified in available data. Both components use identical through-hole radial, vertical cylinder (open) case style suitable for standard PCB assembly processes.