ELF-20N030A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-20N030A is a 2-line common mode choke manufactured by Panasonic Electronic Components, rated for 3A maximum current with 56mOhm typical DC resistance. This through-hole component is designed for power line filtering applications in electronic equipment. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support, maintenance, and new production requirements where equivalent performance characteristics are required.

Substiute Parts

ELF-20N030A

Panasonic Electronic ComponentsIn Stock: 1112ELF-20N030A Datasheet

Current PartRFQ

SS26V-300028

KEMETIn Stock: 1030SS26V-300028 Datasheet

DirectRFQ

B82734R2322B030

EPCOS - TDK ElectronicsIn Stock: 1333B82734R2322B030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the ELF-20N030A are selected based on the following critical parameters that determine functional equivalence:

• Number of Lines: Must be 2-line configuration
• Current Rating (Max): Must support minimum 3A operation
• Mounting Type: Must be through-hole to maintain PCB compatibility
• Package / Case: Must be vertical, 4-pin configuration for footprint compatibility
• DC Resistance (DCR): Should be within acceptable range for power line filtering applications

The two substitute parts listed below meet these core substitution criteria while offering active product status and improved compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

SS26V-300028 (KEMET) is an active product with ROHS3 compliance and REACH unaffected status. This part maintains the 3A current rating and provides 250V AC voltage rating with operating temperature range of -25°C to 120°C. The 100mOhm DCR is higher than the original specification but remains acceptable for common mode choke applications. Physical dimensions differ slightly (26.00mm x 20.50mm vs. 20.00mm x 32.00mm), requiring PCB layout verification.

B82734R2322B030 (EPCOS - TDK Electronics) is an active product with ROHS3 compliance and REACH affected status. This part exceeds the current rating at 3.2A and provides superior DC resistance at 85mOhm (Typ), closer to the original specification. Operating temperature range extends to -40°C to 125°C. Approval agencies include ENEC, UR, and VDE. Physical dimensions are 32.50mm x 21.00mm, requiring PCB layout verification.

Both substitute parts are available in active production status with modern compliance certifications, addressing the obsolescence of the original ELF-20N030A component.

Frequently Asked Questions (FAQ)

Q: Can SS26V-300028 or B82734R2322B030 be used as direct replacements for ELF-20N030A?

A: Both parts meet the core substitution criteria of 2-line configuration, through-hole mounting, vertical 4-pin package, and current ratings at or above 3A. However, physical dimensions differ, requiring PCB layout verification before implementation. DC resistance values are higher than the original specification and must be evaluated for circuit performance impact.

Q: What are the key differences in DC resistance between the substitute parts and the original?

A: The ELF-20N030A specifies 56mOhm (Typ). SS26V-300028 provides 100mOhm, while B82734R2322B030 provides 85mOhm (Typ). Higher DC resistance increases power dissipation and heat generation. Circuit thermal analysis is necessary to confirm acceptability in the target application.

Q: Are there compliance differences between the substitute parts?

A: Both substitute parts are ROHS3 compliant, addressing the non-compliance status of the obsolete ELF-20N030A. SS26V-300028 has REACH unaffected status, while B82734R2322B030 has REACH affected status. B82734R2322B030 includes additional approvals from ENEC, UR, and VDE.

Q: Do the physical dimension differences affect PCB compatibility?

A: Yes. The original ELF-20N030A measures 20.00mm x 32.00mm with 30.00mm height. SS26V-300028 measures 26.00mm x 20.50mm with 30.50mm height. B82734R2322B030 measures 32.50mm x 21.00mm with 31.00mm height. PCB layout must be verified to confirm clearance and mounting compatibility for each substitute option.

Q: What is the inductance specification for the substitute parts?

A: SS26V-300028 specifies 2.8 mH @ 1 kHz. B82734R2322B030 specifies 6.8 mH @ 10 kHz. The original ELF-20N030A inductance value is not provided in the available data. Inductance requirements for the target application must be confirmed before selection.

Q: What operating temperature ranges do the substitute parts support?

A: SS26V-300028 operates from -25°C to 120°C. B82734R2322B030 operates from -40°C to 125°C, providing extended low-temperature capability. The original ELF-20N030A operating temperature is not specified. Application temperature requirements must be confirmed for proper part selection.