ELF-18D650K Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D650K is a 2-line common mode choke (CMC) designed for power line filtering applications with a maximum current rating of 1.8A and through-hole mounting. Manufactured by Panasonic Electronic Components as part of the V series, this component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts from active manufacturers is essential for ongoing design support, production continuity, and system reliability in applications requiring power line EMI filtering.

Substiute Parts

ELF-18D650K

Panasonic Electronic ComponentsIn Stock: 1046ELF-18D650K Datasheet

Current PartRFQ

B82732R2172B030

EPCOS - TDK ElectronicsIn Stock: 18299B82732R2172B030 Datasheet

SimilarRFQ

B82734R2322B030

EPCOS - TDK ElectronicsIn Stock: 1333B82734R2322B030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELF-18D650K are identified based on the following critical parameters that define functional equivalence in power line common mode choke applications:

Primary Substitution Criteria:

• Filter Type: Power Line
• Number of Lines: 2 (dual-line configuration)
• Mounting Type: Through Hole
• Package / Case: Vertical, 4 PC Pin configuration
• Current Rating compatibility: Substitute parts must support the application's maximum current requirement

Secondary Compatibility Factors:

• Operating temperature range overlap
• DC Resistance (DCR) characteristics
• Voltage rating (AC 250V for power line applications)
• Physical dimensions and footprint compatibility
• RoHS and regulatory compliance status

The two identified substitute parts (B82732R2172B030 and B82734R2322B030) from EPCOS - TDK Electronics maintain the core functional architecture of 2-line common mode chokes with through-hole vertical mounting, ensuring PCB layout compatibility and electrical performance in power line filtering circuits.

Parameter Comparison

Engineering Selection Recommendations

For B82732R2172B030 (EPCOS - TDK Electronics): This substitute is suitable for applications where the current requirement does not exceed 1.7A. The part maintains active product status with ROHS3 compliance and international certifications (ENEC, UR, VDE), providing long-term supply assurance. The smaller physical footprint (24.00mm x 16.50mm) may require PCB layout verification for the original ELF-18D650K design. The 190mOhm typical DCR and 6.8 mH inductance @ 10 kHz provide specified electrical performance for power line filtering.

For B82734R2322B030 (EPCOS - TDK Electronics): This substitute accommodates higher current applications up to 3.2A, providing design margin above the original 1.8A specification. Active product status with ROHS3 compliance and international certifications ensures supply continuity and regulatory compliance. The larger physical dimensions (32.50mm x 21.00mm) require verification against PCB layout constraints. The lower DCR (85mOhm typical) and 6.8 mH inductance @ 10 kHz deliver improved electrical performance characteristics.

Both substitute parts from EPCOS - TDK Electronics offer superior regulatory compliance (ROHS3 vs. RoHS non-compliant) and active product status, addressing the obsolescence of the ELF-18D650K while maintaining functional equivalence in 2-line common mode choke power line filtering applications.

Frequently Asked Questions (FAQ)

Q: Can B82732R2172B030 or B82734R2322B030 directly replace ELF-18D650K without PCB modifications?

A: Both substitute parts maintain the same package configuration (Vertical, 4 PC Pin through-hole) and functional architecture (2-line common mode choke). However, physical dimensions differ. B82732R2172B030 is smaller (24.00mm x 16.50mm vs. 29.00mm x 21.00mm), while B82734R2322B030 is larger (32.50mm x 21.00mm). PCB layout verification is required to confirm pin-to-pin compatibility and mounting clearance.

Q: Which substitute should be selected for a 1.8A application?

A: B82734R2322B030 is recommended for 1.8A applications due to its 3.2A current rating, providing adequate design margin. B82732R2172B030 operates at its maximum 1.7A rating in this scenario, leaving minimal headroom. Current rating selection depends on application thermal management and reliability requirements.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both B82732R2172B030 and B82734R2322B030 are ROHS3 compliant, whereas the original ELF-18D650K is RoHS non-compliant. This represents an improvement in regulatory compliance for new designs or production transitions.

Q: What are the inductance specifications for the substitute parts?

A: Both substitute parts specify 6.8 mH @ 10 kHz inductance. The original ELF-18D650K does not provide inductance data in the available specifications. This inductance value is typical for 2-line common mode chokes in power line filtering applications.

Q: Do the substitute parts have international certifications?

A: Yes. Both B82732R2172B030 and B82734R2322B030 carry ENEC, UR, and VDE approvals, providing compliance for European and North American power line applications. The original ELF-18D650K does not specify approval agencies.

Q: What is the temperature operating range difference?

A: The original ELF-18D650K operates from -20°C to 105°C. Both substitute parts operate from -40°C to 125°C, providing extended temperature range capability suitable for industrial and harsh environment applications.