ELF-16M070A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-16M070A is a 2-line common mode choke (CMC) designed for through-hole mounting with a 700mA current rating and 550mOhm typical DC resistance. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. The part belongs to Panasonic Electronic Components' M series and is currently available in limited inventory (1020 pcs).

Substiute Parts

ELF-16M070A

Panasonic Electronic ComponentsIn Stock: 1129ELF-16M070A Datasheet

Current PartRFQ

B82731M2701A030

EPCOS - TDK ElectronicsIn Stock: 9146B82731M2701A030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-16M070A is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Current Rating: Minimum 700mA capability required
• Mounting Type: Through-hole mounting required for PCB compatibility
• Package Configuration: Vertical, 4-pin package format
• Physical Dimensions: Height compatibility at 0.807" (20.50mm) maximum
• DC Resistance: Electrical performance baseline at 550mOhm typical

The B82731M2701A030 from EPCOS - TDK Electronics meets these core substitution criteria while offering enhanced specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The B82731M2701A030 is a direct functional substitute for the obsolete ELF-16M070A based on matching core electrical and mechanical parameters: identical 2-line configuration, 700mA current rating, through-hole mounting, and vertical 4-pin package with matching height specifications.

The substitute part offers additional advantages in terms of product lifecycle status (active vs. obsolete), regulatory compliance certifications (ENEC, UR, VDE), and RoHS3 compliance. The B82731M2701A030 is currently available in higher inventory (9044 pcs) compared to the ELF-16M070A (1020 pcs), supporting long-term supply chain stability.

The DC resistance specification of the substitute (1Ohm typical) is higher than the original part (550mOhm typical). This parameter difference must be evaluated against specific circuit requirements and thermal performance expectations in the target application.

Frequently Asked Questions (FAQ)

Q: Can the B82731M2701A030 be used as a direct replacement for the ELF-16M070A?

A: Yes, the B82731M2701A030 meets the core substitution criteria: 2-line common mode choke, 700mA current rating, through-hole mounting, vertical 4-pin package, and matching height of 0.807" (20.50mm). Both parts are suitable for identical PCB footprints and mounting positions.

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

A: The ELF-16M070A has a typical DC resistance of 550mOhm, while the B82731M2701A030 has 1Ohm typical. This difference affects power dissipation and voltage drop across the component. Circuit designers must evaluate whether the higher resistance of the substitute part remains within acceptable performance parameters for the specific application.

Q: Why is the ELF-16M070A classified as obsolete?

A: Obsolete status indicates that Panasonic Electronic Components has discontinued this product line. While current inventory exists (1020 pcs), no future production is planned. The B82731M2701A030 from EPCOS - TDK Electronics is an active product with ongoing manufacturing support.

Q: Are there compliance or certification differences between these parts?

A: The B82731M2701A030 carries certifications from ENEC, UR, and VDE, and is RoHS3 compliant. The ELF-16M070A specifications do not list these certifications. Both parts share the same ECCN classification (EAR99).

Q: What is the packaging difference between these parts?

A: The ELF-16M070A is supplied in standard packaging, while the B82731M2701A030 is supplied in trays. Both maintain identical component dimensions and pin configurations for circuit board assembly.