ELL-ATV390M Equivalent & Substitute Parts

Part Overview

The ELL-ATV390M is a 39 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Designed for surface mount applications, this component delivers 1.6 A current rating with 74 mOhm 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 procurement continuity.

Substiute Parts

ELL-ATV390M

Panasonic Electronic ComponentsIn Stock: 1055ELL-ATV390M Datasheet

Current PartRFQ

SRR1050A-390Y

Bourns Inc.In Stock: 1406SRR1050A-390Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SRR1050A-390Y from Bourns Inc. qualifies as a functional substitute based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Inductance: 39 µH (identical specification)
• Inductance Test Frequency: 100 kHz (identical)
• Core Material: Ferrite, shielded drum core (identical construction)
• Mounting Type: Surface Mount (identical)
• Package Dimensions: 10.20mm L × 10.00mm W × 5.10mm H (within acceptable mechanical envelope)
• RoHS Status: ROHS3 Compliant (equivalent compliance)
• Moisture Sensitivity Level: MSL 1 (identical)

Allowable Parameter Variations:

• Current Rating: 2.25 A (higher than 1.6 A requirement; acceptable for applications requiring ≤1.6 A)
• DC Resistance: 106 mOhm Max (higher than 74 mOhm; acceptable where power dissipation margin exists)
• Inductance Tolerance: ±30% (wider than ±20%; acceptable for non-critical tolerance applications)

Parameter Comparison

Engineering Selection Recommendations

The SRR1050A-390Y is suitable as a direct substitute for the obsolete ELL-ATV390M in applications where the following conditions are met:

• Circuit design accommodates the higher DC resistance (106 mOhm vs. 74 mOhm), with thermal analysis confirming acceptable power dissipation at operating current levels ≤1.6 A
• PCB layout permits the slightly increased package height (5.10mm vs. 4.50mm) and length (10.20mm vs. 10.00mm)
• Application tolerates the wider inductance tolerance specification (±30% vs. ±20%)
• ROHS3 compliance requirement is satisfied by the substitute part
• Active product status of the SRR1050A-390Y ensures long-term availability and supply chain continuity

Frequently Asked Questions (FAQ)

Q: Can the SRR1050A-390Y be used as a drop-in replacement for the ELL-ATV390M?

A: The SRR1050A-390Y is electrically and mechanically compatible for most applications. Verify that your PCB layout accommodates the slightly larger package dimensions (10.20mm × 10.00mm × 5.10mm vs. 10.00mm × 10.00mm × 4.50mm). Confirm that the higher DC resistance (106 mOhm) does not exceed thermal or power dissipation limits at your operating current.

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

A: The SRR1050A-390Y exhibits 106 mOhm maximum DC resistance compared to 74 mOhm in the original part. At 1.6 A, this results in approximately 0.17 W additional power dissipation. Evaluate thermal management in your application to ensure this increase is acceptable.

Q: Does the wider inductance tolerance of the SRR1050A-390Y affect circuit performance?

A: The substitute part specifies ±30% inductance tolerance versus ±20% for the original. Applications with strict inductance requirements should evaluate whether this tolerance range remains within acceptable circuit performance margins. For non-critical inductance applications, this variation is typically acceptable.

Q: Are both parts RoHS compliant?

A: Yes. Both the ELL-ATV390M and SRR1050A-390Y are ROHS3 compliant and carry MSL 1 moisture sensitivity rating, ensuring equivalent environmental and regulatory compliance.

Q: What is the availability status of these parts?

A: The ELL-ATV390M is obsolete. The SRR1050A-390Y is actively manufactured by Bourns Inc., ensuring continued availability and supply chain reliability for new designs and production runs.