ELL-ATV391M Equivalent & Substitute Parts

Part Overview

The ELL-ATV391M is a 390 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Designed for surface mount applications, this component operates at 520 mA with a DC resistance of 690mOhm and features ferrite core construction with ±20% inductance tolerance. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

ELL-ATV391M

Panasonic Electronic ComponentsIn Stock: 798ELL-ATV391M Datasheet

Current PartRFQ

SRR1210-391M

Bourns Inc.In Stock: 1651SRR1210-391M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELL-ATV391M is determined by the following critical parameters:

• Inductance Value: 390 µH at 100 kHz test frequency with ±20% tolerance
• Current Rating: Minimum 520 mA continuous current capability
• DC Resistance: Maximum 690mOhm to maintain circuit performance
• Core Construction: Ferrite drum core, wirewound configuration
• Shielding: Shielded design to minimize electromagnetic interference
• Mounting: Surface mount technology on nonstandard package footprint
• Compliance: RoHS compliance and MSL 1 rating

The SRR1210-391M from Bourns Inc. meets these substitution criteria with equivalent inductance, superior current rating, and compatible DC resistance specifications.

Parameter Comparison

Engineering Selection Recommendations

The SRR1210-391M is a direct functional substitute for the obsolete ELL-ATV391M. Selection is supported by:

• Electrical Equivalence: Identical inductance value and tolerance at the specified test frequency
• Current Capability: The SRR1210-391M provides 1.3 A rating, exceeding the original 520 mA requirement with design margin
• Resistance Performance: DC resistance of 600mOhm maximum is lower than the original 690mOhm, resulting in improved efficiency
• Compliance Status: Both components maintain RoHS compliance; the substitute carries ROHS3 certification with REACH unaffected status
• Availability: The SRR1210-391M is in active production with confirmed inventory, ensuring supply chain continuity
• Moisture Sensitivity: Both components share MSL 1 rating, requiring no change to handling or storage procedures

Physical dimensions differ (12.00mm x 12.00mm x 10.00mm for the substitute versus 10.00mm x 10.00mm x 4.50mm for the original), requiring PCB layout verification before implementation.

Frequently Asked Questions (FAQ)

Q: Can the SRR1210-391M directly replace the ELL-ATV391M without circuit modification?

A: Electrical substitution is valid based on inductance, tolerance, and DC resistance parameters. However, the larger footprint (12mm x 12mm versus 10mm x 10mm) and increased height (10mm versus 4.50mm) require PCB layout verification and potential redesign of the component placement area.

Q: What is the significance of the higher current rating on the SRR1210-391M?

A: The 1.3 A rating on the substitute exceeds the original 520 mA specification, providing additional design margin and thermal headroom. This does not affect substitution validity; the component will operate safely within the original circuit's current requirements.

Q: Are there any compliance differences between the two parts?

A: Both components are RoHS compliant. The SRR1210-391M carries ROHS3 certification and is REACH unaffected, meeting current regulatory requirements. The original ELL-ATV391M is RoHS compliant without additional certifications listed.

Q: How does the lower DC resistance of the substitute affect circuit performance?

A: The SRR1210-391M's 600mOhm maximum DCR is lower than the original 690mOhm specification. This results in reduced resistive losses and improved efficiency. No negative effects on circuit function are expected; performance will be equivalent or improved.

Q: What packaging considerations apply to this substitution?

A: The original ELL-ATV391M uses nonstandard packaging in tape and reel format. The SRR1210-391M is supplied in tape and reel (TR) packaging. Both components maintain MSL 1 rating, requiring no change to moisture control procedures during storage or assembly.

Q: Is the SRR1210-391M suitable for the same operating temperature range?

A: The SRR1210-391M operates across -40°C to 125°C. The original part's operating temperature range is not specified in available documentation. The substitute's temperature range covers standard industrial and commercial applications.