ELF-16M080A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-16M080A is a 2-line common mode choke (CMC) designed for through-hole mounting with an 800mA current rating and 400mOhm typical DC resistance. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity. The part belongs to Panasonic Electronic Components' M series and is available in vertical 4-pin configuration.

Substiute Parts

ELF-16M080A

Panasonic Electronic ComponentsIn Stock: 946ELF-16M080A Datasheet

Current PartRFQ

B82731M2801A030

EPCOS - TDK ElectronicsIn Stock: 2245B82731M2801A030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-16M080A is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Current Rating: Must support minimum 800mA
• Mounting Type: Must be through-hole
• Package Configuration: Must be vertical 4-pin
• Physical Dimensions: Height must not exceed 0.807" (20.50mm); length and width should be compatible with PCB layout constraints
• DC Resistance: Should remain within acceptable range for the application (400mOhm typical for the original part)

The B82731M2801A030 from EPCOS - TDK Electronics meets these core substitution criteria. Both parts share identical current ratings, mounting type, package configuration, and maximum height. The substitute part is active in production status, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The B82731M2801A030 is the qualified substitute for the obsolete ELF-16M080A based on the following factors:

Product Status: The substitute part is active in production, ensuring procurement availability and long-term supply chain stability compared to the obsolete main part.

Electrical Compatibility: Both parts maintain identical 800mA current ratings and 2-line configuration. The substitute's higher DC resistance (800mOhm vs. 400mOhm) represents a design trade-off that must be evaluated within the specific application context.

Mechanical Compatibility: Both parts share identical maximum height (0.807") and vertical 4-pin package configuration. The substitute has slightly larger length (0.827" vs. 0.591"), requiring PCB layout verification.

Regulatory Compliance: The substitute part carries ROHS3 compliance and certifications from ENEC, UR, and VDE, providing enhanced regulatory coverage for modern applications.

Voltage Rating: The substitute specifies 250V AC rating and -40°C to 125°C operating temperature range, parameters not documented for the original part.

Frequently Asked Questions (FAQ)

Q: Can the B82731M2801A030 directly replace the ELF-16M080A without circuit modifications?

A: Both parts share the same current rating (800mA), number of lines (2), mounting type (through-hole), and package configuration (vertical 4-pin). However, the substitute has higher DC resistance (800mOhm vs. 400mOhm) and different physical length (0.827" vs. 0.591"). Circuit performance and PCB layout must be evaluated for your specific application.

Q: What is the significance of the DC resistance difference between these parts?

A: The substitute part's higher DC resistance (800mOhm) will result in greater power dissipation compared to the original part (400mOhm) at the same current levels. This affects thermal performance and must be considered in thermal design calculations.

Q: Are there physical space constraints I should consider?

A: The substitute part is 0.236" (6.00mm) longer than the original part. Verify that your PCB layout accommodates the B82731M2801A030's length of 0.827" (21.00mm). Maximum height remains identical at 0.807" (20.50mm).

Q: What certifications does the substitute part carry?

A: The B82731M2801A030 is ROHS3 compliant and carries approvals from ENEC, UR, and VDE. The original ELF-16M080A does not specify these certifications.

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

A: Both parts use vertical 4-pin through-hole configuration. The substitute is supplied in tray packaging, while the original part packaging format is not specified.