ELF-11M100E Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-11M100E is a 2-line common mode choke (CMC) designed for through-hole mounting with a maximum current rating of 1A and typical DC resistance of 250mOhm. Manufactured by Panasonic Electronic Components, this component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

ELF-11M100E

Panasonic Electronic ComponentsIn Stock: 906ELF-11M100E Datasheet

Current PartRFQ

B82730U3102A020

EPCOS - TDK ElectronicsIn Stock: 1159B82730U3102A020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-11M100E is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Current Rating: Must support minimum 1A
• Mounting Type: Must be through-hole
• Package Configuration: Must be vertical, 4-pin package
• Physical Dimensions: Must be compatible with PCB layout constraints
• DC Resistance: Should remain within acceptable operating parameters for the application

The B82730U3102A020 from EPCOS - TDK Electronics meets these core substitution criteria while maintaining functional equivalence for common mode filtering applications.

Parameter Comparison

Engineering Selection Recommendations

The B82730U3102A020 is an active substitute for the obsolete ELF-11M100E. Both components share identical 2-line configuration, 1A current rating, through-hole mounting, and vertical 4-pin package format. Physical dimensions are comparable with minimal variation (approximately 0.02" in length and width, 0.019" in height), permitting direct PCB layout compatibility.

The B82730U3102A020 provides additional specifications including 300V AC voltage rating and defined operating temperature range (-40°C ~ 125°C), along with ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment.

The DC resistance differential (340mOhm versus 250mOhm) represents a 36% increase and must be evaluated against application-specific power dissipation and filtering requirements.

Frequently Asked Questions (FAQ)

Q: Can the B82730U3102A020 directly replace the ELF-11M100E without PCB modification?

A: Physical dimensions are sufficiently similar to permit direct mounting in existing through-hole footprints. Verify that the 0.02" length and width variations and 0.019" height reduction do not conflict with adjacent component placement or clearance requirements.

Q: What is the impact of the 90mOhm increase in DC resistance?

A: The B82730U3102A020 exhibits 340mOhm typical DCR compared to 250mOhm for the ELF-11M100E. Power dissipation increases proportionally with current squared. At 1A, this represents an additional 90mW of dissipation. Thermal performance must be evaluated for the specific application.

Q: Are there compliance differences between these parts?

A: The B82730U3102A020 carries ROHS3 compliance certification and defined operating temperature specifications. The ELF-11M100E specifications do not include these details. Both share EAR99 export classification.

Q: Why is the ELF-11M100E obsolete?

A: Panasonic has discontinued this product line. The B82730U3102A020 from EPCOS - TDK Electronics remains in active production and serves equivalent filtering applications.

Q: Are packaging differences significant?

A: Both components use vertical, 4-pin through-hole packages. The ELF-11M100E ships in standard packaging while the B82730U3102A020 is supplied in trays. This affects procurement and handling but not electrical or mechanical compatibility.