ELL-CTV120M Equivalent & Substitute Parts

Part Overview

The ELL-CTV120M is a 12 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Rated for 3.7 A continuous current with 22mOhm DC resistance, this surface mount component is designed for applications requiring fixed inductance in compact form factors. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

ELL-CTV120M

Panasonic Electronic ComponentsIn Stock: 935ELL-CTV120M Datasheet

Current PartRFQ

SRR1260-120M

Bourns Inc.In Stock: 1868SRR1260-120M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-CTV120M is determined by the following critical parameters:

• Inductance Value: Must be 12 µH with ±20% tolerance
• Core Type & Shielding: Ferrite core with shielding required
• Mounting & Package: Surface mount, nonstandard package footprint
• Current Handling: Minimum 3.7 A continuous rating
• DC Resistance: Maximum 23mOhm acceptable (within engineering tolerance for equivalent performance)
• Frequency Characteristics: Inductance measured at 100 kHz

The SRR1260-120M from Bourns Inc. meets all substitution criteria. It maintains identical inductance specification, core material, shielding configuration, and mounting type. The substitute provides superior current rating (5.2 A vs. 3.7 A) and marginally higher DC resistance (23mOhm max vs. 22mOhm), both acceptable for equivalent circuit operation.

Parameter Comparison

Engineering Selection Recommendations

The SRR1260-120M is the qualified substitute for the obsolete ELL-CTV120M. Selection is based on:

• Functional Equivalence: Identical inductance value, tolerance, core material, and shielding configuration ensure direct circuit compatibility
• Compliance Alignment: Both components maintain ROHS3 compliance and MSL 1 rating, supporting equivalent environmental and regulatory requirements
• Active Product Status: The SRR1260-120M is actively manufactured by Bourns Inc., ensuring long-term availability and supply chain stability
• Performance Enhancement: The substitute provides increased current rating (5.2 A) and specified saturation current (5 A), offering design margin improvement over the original part
• Mechanical Compatibility: Nonstandard package footprints are maintained; physical dimensions require verification for specific PCB layouts (ELL-CTV120M: 12.00mm × 12.00mm × 4.50mm height; SRR1260-120M: 12.50mm × 12.50mm × 6.50mm height)

Frequently Asked Questions (FAQ)

Q: Can the SRR1260-120M directly replace the ELL-CTV120M without circuit modification?

A: Yes. Both components share identical inductance value (12 µH), tolerance (±20%), core material (ferrite), shielding, and mounting type. DC resistance difference (23mOhm max vs. 22mOhm) is within acceptable engineering tolerance for equivalent circuit operation.

Q: What is the impact of the higher current rating in the SRR1260-120M?

A: The SRR1260-120M's 5.2 A rating exceeds the original 3.7 A specification, providing additional design margin. This does not affect substitution compatibility; the component remains suitable for circuits designed for 3.7 A operation.

Q: Are there physical dimension differences between these parts?

A: Yes. The SRR1260-120M is slightly larger (12.50mm × 12.50mm × 6.50mm height) compared to the ELL-CTV120M (12.00mm × 12.00mm × 4.50mm height). PCB layout verification is required to confirm mechanical fit in existing designs.

Q: Do both parts meet the same regulatory and environmental standards?

A: Yes. Both components are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), supporting equivalent environmental and regulatory requirements.

Q: Why is the ELL-CTV120M listed as obsolete?

A: Panasonic has discontinued this product line. The SRR1260-120M from Bourns Inc. is an active, functionally equivalent alternative ensuring continued design support and component availability.