ELL-CTV561M Equivalent & Substitute Parts

Part Overview

The ELL-CTV561M is a 560 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Designed for surface mount applications, this component operates at 540 mA with a DC resistance of 810mOhm and is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

ELL-CTV561M

Panasonic Electronic ComponentsIn Stock: 981ELL-CTV561M Datasheet

Current PartRFQ

SRR1260-561K

Bourns Inc.In Stock: 2390SRR1260-561K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELL-CTV561M is based on the following critical parameters:

• Inductance Value: 560 µH (primary electrical requirement)
• Current Rating: Minimum 540 mA (functional requirement for circuit operation)
• Core Material & Shielding: Ferrite, shielded construction (electromagnetic performance)
• Mounting Type: Surface mount (assembly compatibility)
• Package Footprint: Nonstandard 12.00mm x 12.00mm base dimensions (PCB layout constraint)
• DC Resistance: Maximum acceptable DCR for circuit performance
• Compliance: ROHS3 and MSL ratings for manufacturing and environmental requirements

The SRR1260-561K from Bourns Inc. meets these substitution criteria with equivalent inductance, higher current rating capability, and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SRR1260-561K is a qualified substitute for the ELL-CTV561M based on the following factors:

• Electrical Equivalence: Both components provide 560 µH inductance at 100 kHz test frequency with ferrite shielded drum core construction.
• Current Capability: The SRR1260-561K supports 880 mA, exceeding the ELL-CTV561M requirement of 540 mA, providing operational margin.
• Compliance Alignment: Both parts maintain ROHS3 compliance and MSL Level 1 rating, meeting manufacturing and environmental standards.
• Product Status: The SRR1260-561K is active and in production, ensuring long-term availability and supply chain stability compared to the obsolete ELL-CTV561M.
• Packaging: Both use nonstandard surface mount packages with compatible footprints. The SRR1260-561K footprint is 0.50mm larger in length and width with 2.00mm additional height; PCB layout verification is required.

Frequently Asked Questions (FAQ)

Q: Can the SRR1260-561K directly replace the ELL-CTV561M without circuit modification?

A: Electrical substitution is valid based on matching inductance value and core type. However, the SRR1260-561K has a larger footprint (12.50mm x 12.50mm vs. 12.00mm x 12.00mm) and greater height (6.50mm vs. 4.50mm). PCB layout compatibility must be confirmed before implementation.

Q: What is the significance of the inductance tolerance difference (±20% vs. ±10%)?

A: The SRR1260-561K provides tighter tolerance control, which may improve circuit performance consistency. If the original design relied on the ±20% tolerance band, the tighter tolerance of the substitute is acceptable and beneficial.

Q: Does the higher current rating of the SRR1260-561K affect circuit operation?

A: No. A higher current rating indicates greater thermal and saturation margin. The substitute will operate safely at the original circuit current of 540 mA.

Q: Are there packaging differences that affect assembly?

A: The SRR1260-561K is supplied in Tape & Reel (TR) format, while the ELL-CTV561M packaging format is not specified. Confirm reel compatibility with assembly equipment and handling procedures.

Q: What is the impact of the DCR difference (810mOhm vs. 1Ohm Max)?

A: The SRR1260-561K has slightly higher maximum DC resistance. In circuits sensitive to resistive losses, this 190mOhm difference may require thermal or efficiency analysis. For most applications, this difference is negligible.