ELC-09D8R2F Equivalent & Substitute Parts

Part Overview

The ELC-09D8R2F is an 8.2 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 2.6 A continuous current with 24mOhm DC resistance. This through-hole radial component operates at 10 kHz test frequency and is housed in a vertical cylinder package measuring 9.50mm diameter by 8.90mm height. The part is classified as obsolete, necessitating identification of active equivalent components that maintain functional compatibility within the same electrical and mechanical specifications.

Substiute Parts

ELC-09D8R2F

Panasonic Electronic ComponentsIn Stock: 1090ELC-09D8R2F Datasheet

Current PartRFQ

B82144B2822K000

EPCOS - TDK ElectronicsIn Stock: 1752B82144B2822K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-09D8R2F is determined by the following critical parameters:

Primary Electrical Criteria:

• Inductance value: 8.2 µH (tolerance range ±20% allows 6.56–9.84 µH)
• Current rating: minimum 2.6 A continuous
• DC resistance: must not exceed 24mOhm to maintain circuit performance
• Unshielded configuration for EMI characteristics

Mechanical Criteria:

• Through-hole mounting compatibility
• Radial, vertical cylinder package orientation
• Physical dimensions compatible with 9.50mm diameter and 8.90mm height constraints

Compliance Criteria:

• ROHS3 compliance required for regulatory alignment

The substitute part B82144B2822K000 meets the primary electrical requirement of 8.2 µH inductance with 2.65 A current rating. However, the DC resistance specification of 105mOhm maximum exceeds the original 24mOhm value, representing a significant parameter deviation. Physical dimensions also differ, with 6.50mm diameter and 14.00mm height, requiring mechanical re-evaluation for board layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

The B82144B2822K000 provides functional electrical equivalence for inductance and current rating specifications. Both components maintain ROHS3 compliance and through-hole radial mounting compatibility.

Critical considerations for selection:

DC Resistance Deviation: The substitute exhibits 105mOhm maximum DCR compared to the original 24mOhm specification. This 4.4× increase in resistance will result in higher power dissipation and heat generation in the inductor. Circuit thermal analysis and current loop calculations must confirm acceptable performance under this condition.

Physical Dimension Variance: The substitute is smaller in diameter (6.50mm vs. 9.50mm) but taller (14.00mm vs. 8.90mm). PCB layout and component placement constraints must be re-evaluated to ensure mechanical fit within the available board space.

Product Status: The substitute is active production status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Selection of B82144B2822K000 is viable only when circuit design tolerates the increased DC resistance and when physical dimensions accommodate the taller profile.

Frequently Asked Questions (FAQ)

Q: Can B82144B2822K000 directly replace ELC-09D8R2F without circuit modification?

A: Electrical substitution is possible for inductance and current rating. However, the 4.4× increase in DC resistance will alter circuit behavior. Circuit simulation or testing is necessary to confirm performance acceptability in your specific application.

Q: What impact does the higher DC resistance have on circuit operation?

A: Increased DCR causes higher I²R power dissipation in the inductor, generating additional heat. In power supply or filtering applications, this may reduce efficiency and require thermal management review. In signal filtering applications, the impact is typically minimal.

Q: Are the physical dimensions compatible with my PCB layout?

A: The substitute is smaller in diameter but significantly taller. Verify that the 14.00mm height does not interfere with adjacent components or enclosure constraints. The 6.50mm diameter may allow tighter component spacing.

Q: Do both parts meet the same regulatory requirements?

A: Both components are ROHS3 compliant. Verify any additional compliance requirements specific to your application or region.

Q: What is the difference between wirewound and drum core construction?

A: The original ELC-09D8R2F uses wirewound construction. The substitute B82144B2822K000 uses drum core wirewound construction with ferrite material. Both are unshielded and suitable for through-hole mounting, but the ferrite core in the substitute contributes to the higher DC resistance specification.

Q: Can I use multiple substitute parts in parallel to reduce DC resistance?

A: Parallel connection of inductors reduces total inductance, not resistance. This approach is not suitable for direct substitution. Consult circuit design guidelines for parallel inductor applications.