ELF-18D450D Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D450D is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 1.4A current handling capability. This component features a typical DC resistance of 191mOhm and is part of the V series product line.

The ELF-18D450D has reached obsolete product status. Identifying qualified substitute parts is essential for maintaining design continuity, ensuring supply chain reliability, and supporting ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

ELF-18D450D

Panasonic Electronic ComponentsIn Stock: 845ELF-18D450D Datasheet

Current PartRFQ

B82734R2142B030

EPCOS - TDK ElectronicsIn Stock: 2641B82734R2142B030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELF-18D450D is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Current Rating (Max): Must support minimum 1.4A
• Mounting Type: Must be through-hole compatible
• Package / Case: Must be vertical, 4 PC pin configuration
• Physical Compatibility: Dimensions and height must accommodate existing PCB layouts

The B82734R2142B030 manufactured by EPCOS - TDK Electronics meets these core substitution criteria. Both components share identical line count, current rating, mounting type, and pin configuration. Physical dimensions are comparable within typical PCB assembly tolerances. The substitute part maintains through-hole vertical mounting compatibility and supports the required 1.4A current specification.

Parameter Comparison

Engineering Selection Recommendations

The B82734R2142B030 is an active product with confirmed availability (2606 pcs in stock) and represents a viable substitute for the obsolete ELF-18D450D. Both components satisfy the core functional requirements: 2-line configuration, 1.4A current capacity, through-hole mounting, and vertical 4-pin package orientation.

The substitute part carries multiple compliance certifications (ENEC, UR, VDE) and is RoHS3 compliant, supporting modern manufacturing and regulatory requirements. The EPCOS - TDK component includes specified operating temperature range (-40°C ~ 125°C) and AC voltage rating (250V), providing additional design margin documentation compared to the original part.

Physical dimensions of the substitute are slightly larger (32.50mm x 21.00mm vs. 25.00mm x 18.00mm), requiring verification of available PCB footprint space. The DC resistance specification differs (460mOhm vs. 191mOhm typical), which may impact thermal performance and power dissipation characteristics in the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the B82734R2142B030 directly replace the ELF-18D450D in existing designs?

A: Both components share identical line count (2), current rating (1.4A), mounting type (through-hole), and pin configuration (vertical, 4 PC). Physical dimensions require verification to confirm PCB layout compatibility. The substitute part is dimensionally larger and should be evaluated for available board space.

Q: What is the significance of the different DC resistance values?

A: The ELF-18D450D specifies 191mOhm typical DCR, while the B82734R2142B030 specifies 460mOhm typical DCR. This difference affects power dissipation and thermal characteristics. Applications sensitive to resistive losses require circuit analysis to confirm acceptable performance with the higher resistance value.

Q: Does the substitute part meet current compliance standards?

A: The B82734R2142B030 carries RoHS3 compliance certification and REACH compliance status. It holds approvals from ENEC, UR, and VDE. The original ELF-18D450D approval agency information is not specified in available documentation.

Q: Are there inventory considerations for this substitution?

A: The ELF-18D450D is obsolete with 771 pcs currently in stock. The B82734R2142B030 is an active product with 2606 pcs available, providing superior long-term supply chain security and future availability assurance.

Q: What packaging format is the substitute supplied in?

A: The B82734R2142B030 is supplied in tray packaging, compared to the original part's unspecified packaging format. Confirm compatibility with receiving and assembly processes.