ELL-CTV8R2N Equivalent & Substitute Parts

Part Overview

The ELL-CTV8R2N is an 8.2 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Designed for surface mount applications, this component delivers 4.4 A current rating with 15mOhm DC resistance in a compact 12.00mm × 12.00mm footprint. The part carries obsolete product status, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

ELL-CTV8R2N

Panasonic Electronic ComponentsIn Stock: 980ELL-CTV8R2N Datasheet

Current PartRFQ

744771008

Würth ElektronikIn Stock: 1862744771008 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-CTV8R2N is determined by the following core electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance value: 8.2 µH (exact match required)
• Core type: Ferrite, shielded drum core (construction method)
• Mounting type: Surface mount (assembly compatibility)
• Package footprint: 12.00mm × 12.00mm (PCB layout compatibility)

Allowable Variation Parameters:

• Current rating: Substitute must equal or exceed 4.4 A
• DC resistance: Substitute may vary within circuit design tolerances
• Inductance tolerance: Substitute tolerance may differ
• Height: Substitute height may vary if within assembly clearance limits

The Würth Elektronik 744771008 qualifies as a functional substitute based on matching inductance (8.2 µH), identical core construction (ferrite shielded drum core), matching mounting type (surface mount), and identical footprint dimensions (12.00mm × 12.00mm). The substitute provides superior current rating (6.25 A vs. 4.4 A) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744771008 is the qualified substitute for the obsolete ELL-CTV8R2N. Selection is supported by:

• Electrical Equivalence: Identical 8.2 µH inductance and matching ferrite shielded drum core construction ensure functional performance in existing circuit designs.
• Mechanical Compatibility: Identical 12.00mm × 12.00mm footprint and surface mount package enable direct PCB layout compatibility without redesign.
• Enhanced Performance Margin: The 6.25 A current rating exceeds the original 4.4 A specification, providing additional design margin for thermal and stress conditions.
• Active Product Status: The substitute maintains active manufacturing status with established supply chain availability, eliminating obsolescence risk.
• Compliance Alignment: Both ROHS3 compliance and MSL 1 rating match the original specification. The substitute adds AEC-Q200 automotive qualification, extending application scope.
• Height Consideration: The substitute height of 6.00mm (vs. 4.50mm original) requires verification against PCB assembly clearance constraints. Footprint compatibility remains unchanged.

Frequently Asked Questions (FAQ)

Q: Can the 744771008 be used as a direct replacement for the ELL-CTV8R2N?

A: Yes, the 744771008 qualifies as a functional substitute. Both components share identical inductance (8.2 µH), core construction (ferrite shielded drum core), mounting type (surface mount), and PCB footprint (12.00mm × 12.00mm). The substitute's higher current rating (6.25 A) and active product status make it suitable for direct substitution in existing designs.

Q: What is the impact of the increased height (6.00mm vs. 4.50mm)?

A: The 1.50mm height increase must be evaluated against PCB assembly clearance specifications. If vertical space is constrained, alternative components with matching inductance and footprint but lower profile may be required. Footprint compatibility remains unchanged.

Q: Does the higher DC resistance (20mOhm vs. 15mOhm) affect circuit performance?

A: The 5mOhm increase in DC resistance is within typical design tolerance ranges for inductor substitution. Circuit impact depends on application-specific current levels and thermal requirements. For designs operating near the original 4.4 A specification, the substitute's 6.25 A rating provides adequate margin to accommodate the resistance increase.

Q: What compliance certifications apply to the substitute?

A: The 744771008 maintains ROHS3 compliance and MSL 1 rating, matching the original specification. The substitute additionally carries AEC-Q200 automotive qualification, enabling use in automotive and high-reliability applications beyond the original part's scope.

Q: Are there packaging differences between the two parts?

A: The ELL-CTV8R2N is supplied as standard SMD packaging. The 744771008 is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated production environments.