ELF-18D650P Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D650P is a 2-line common mode choke (CMC) designed for power line filtering applications with a through-hole mounting configuration. Manufactured by Panasonic Electronic Components, this component is rated for 700mA maximum current and features a vertical 4-pin package with dimensions of 29.00mm × 21.00mm and a height of 34.60mm. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

ELF-18D650P

Panasonic Electronic ComponentsIn Stock: 796ELF-18D650P Datasheet

Current PartRFQ

B82734R2142B030

EPCOS - TDK ElectronicsIn Stock: 2641B82734R2142B030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-18D650P is determined by the following critical parameters:

Primary Compatibility Criteria:

• Filter type: Power line filtering application
• Number of lines: 2-line configuration
• Mounting type: Through hole
• Package configuration: Vertical, 4-pin package
• Current rating: Must support minimum 700mA operation
• Physical footprint: Compatible with PCB layout constraints

The identified substitute part B82734R2142B030 (EPCOS - TDK Electronics) satisfies these core requirements. This substitute maintains the 2-line common mode choke architecture, through-hole mounting, and vertical 4-pin package configuration. The substitute demonstrates enhanced electrical performance with a higher current rating (1.4A) and specified inductance value (39 mH @ 10 kHz), providing operational margin above the original part's 700mA specification.

Parameter Comparison

Engineering Selection Recommendations

The B82734R2142B030 substitute is suitable for applications currently using the obsolete ELF-18D650P based on the following factors:

Product Status: The substitute is an active product with ongoing manufacturer support, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Compliance & Certifications: The substitute carries ENEC, UR, and VDE approvals along with ROHS3 compliance and REACH compliance status, meeting modern regulatory requirements for power line filtering components in industrial and consumer applications.

Electrical Performance: The substitute provides enhanced current handling capability (1.4A versus 700mA), operating temperature range extension (-40°C to 125°C versus -20°C to 105°C), and specified electrical characteristics including 39 mH inductance at 10 kHz and 460 mOhm typical DC resistance.

Physical Compatibility: While the substitute exhibits a slight length increase (32.50mm versus 29.00mm) and reduced height (31.00mm versus 34.60mm), both components maintain the vertical 4-pin through-hole package configuration and identical width (21.00mm), allowing for PCB layout adaptation in most applications.

Frequently Asked Questions (FAQ)

Q: Can the B82734R2142B030 directly replace the ELF-18D650P without circuit modifications?

A: The substitute maintains identical functional architecture (2-line common mode choke, through-hole mounting, vertical 4-pin package) and exceeds the original part's current rating. Physical dimensions differ slightly (length and height), requiring verification of PCB layout compatibility. No circuit modifications are necessary if board space accommodates the substitute's footprint.

Q: What are the key differences in electrical performance between these parts?

A: The substitute provides specified inductance (39 mH @ 10 kHz), DC resistance (460 mOhm typical), and AC voltage rating (250V), whereas the original part specifications do not include these values. The substitute's higher current rating (1.4A) and extended operating temperature range (-40°C to 125°C) represent performance enhancements over the original specification.

Q: Are there compliance or certification differences?

A: The substitute carries ENEC, UR, and VDE approvals with ROHS3 and REACH compliance status. The original part's approval agency information is not specified. For applications requiring specific regulatory certifications, the substitute's documented compliance provides assurance for modern power line filtering standards.

Q: How should PCB layout be adjusted for the dimensional differences?

A: The substitute is 4.60mm longer and 3.60mm shorter in height than the original part, with identical width. Verify that the PCB layout accommodates the increased length (32.50mm) and confirm that the reduced height (31.00mm) does not conflict with adjacent components or enclosure constraints.

Q: Is the substitute available in the same packaging format?

A: Both parts use vertical 4-pin through-hole packages. The substitute is supplied in tray packaging, whereas the original part's packaging format is not specified. For production assembly, confirm that tray packaging is compatible with existing component handling and insertion equipment.