ELL-ATV181M Equivalent & Substitute Parts

Part Overview

The ELL-ATV181M is a 180 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Designed for surface mount applications, this component delivers 750 mA current rating with 320mOhm DC resistance in a compact 10.00mm × 10.00mm footprint. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

ELL-ATV181M

Panasonic Electronic ComponentsIn Stock: 1001ELL-ATV181M Datasheet

Current PartRFQ

SRR1050A-181Y

Bourns Inc.In Stock: 2941SRR1050A-181Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELL-ATV181M is determined by the following critical parameters:

• Inductance Value: Must match 180 µH at 100 kHz test frequency
• Current Rating: Must support minimum 750 mA continuous operation
• DC Resistance: Must not exceed 320mOhm to maintain circuit performance
• Core Construction: Ferrite shielded drum core configuration required
• Mounting: Surface mount package with compatible footprint dimensions
• Compliance: ROHS3 compliance and MSL 1 rating required

The SRR1050A-181Y from Bourns Inc. qualifies as a functional equivalent based on matching inductance value, shielded ferrite core construction, surface mount configuration, and regulatory compliance. While the substitute exhibits higher current rating (1 A vs. 750 mA) and increased DC resistance (420mOhm Max vs. 320mOhm), these parameters remain within acceptable substitution tolerances for applications designed around the original specification.

Parameter Comparison

Engineering Selection Recommendations

The SRR1050A-181Y serves as the primary equivalent for ELL-ATV181M replacement. Selection is supported by:

• Regulatory Compliance: Both components maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with current manufacturing and environmental standards
• Active Product Status: The Bourns substitute is actively manufactured and stocked, providing supply continuity and long-term availability
• AEC-Q200 Certification: The SRR1050A-181Y carries automotive-grade qualification, indicating enhanced reliability and quality assurance
• Functional Equivalence: Matching inductance value and ferrite shielded core construction preserve circuit functionality
• Dimensional Compatibility: Minor dimensional variations (0.20mm length increase, 0.60mm height increase) remain within typical PCB layout tolerances for surface mount applications

Applications requiring the original ELL-ATV181M specification should transition to SRR1050A-181Y for production continuity.

Frequently Asked Questions (FAQ)

Q: Can SRR1050A-181Y directly replace ELL-ATV181M in existing designs?

A: Yes, for applications operating at or below 750 mA. The substitute provides higher current capability (1 A) and maintains the same 180 µH inductance value at 100 kHz. Verify PCB layout accommodates the slightly larger package dimensions (10.20mm × 10.00mm × 5.10mm vs. 10.00mm × 10.00mm × 4.50mm).

Q: What is the impact of increased DC resistance in the substitute?

A: The SRR1050A-181Y exhibits 420mOhm maximum DCR compared to 320mOhm in the original. This 100mOhm increase results in proportionally higher resistive losses. For circuits sensitive to power dissipation, thermal analysis is required to confirm acceptable operating conditions.

Q: Are there packaging differences between these components?

A: Both components use surface mount nonstandard packages. The Bourns substitute is supplied in Tape & Reel (TR) format, while the Panasonic original packaging is not specified. Verify reel compatibility with assembly equipment before production transition.

Q: Does inductance tolerance affect substitution?

A: The ELL-ATV181M specifies ±20% tolerance while SRR1050A-181Y specifies ±30%. For applications with tight inductance requirements, the wider tolerance of the substitute may impact circuit performance. Confirm tolerance requirements against design specifications.

Q: What certifications apply to the substitute part?

A: The SRR1050A-181Y carries AEC-Q200 automotive qualification and REACH Unaffected status, in addition to ROHS3 compliance. These certifications support use in automotive and regulated applications.