ELL-ATV821M Equivalent & Substitute Parts

Part Overview

The ELL-ATV821M is a 820 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Rated for 340 mA with a DC resistance of 1.27Ohm, this surface mount component is designed for applications requiring fixed inductance in compact form factors. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Substiute Parts

ELL-ATV821M

Panasonic Electronic ComponentsIn Stock: 1093ELL-ATV821M Datasheet

Current PartRFQ

SRR1260-821K

Bourns Inc.In Stock: 1051SRR1260-821K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-ATV821M is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 820 µH (exact match required)
• Core type: Ferrite drum core, wirewound construction
• Shielding: Shielded configuration
• Mounting: Surface mount technology
• Current handling capability: Minimum 340 mA rating

Secondary Compatibility Factors:

• DC resistance within acceptable operating range
• Inductance tolerance compatible with circuit requirements
• Physical dimensions permitting PCB layout accommodation
• RoHS3 compliance for regulatory alignment

The SRR1260-821K from Bourns Inc. meets all primary matching criteria with identical inductance specification and core material. The substitute demonstrates enhanced current rating (730 mA vs. 340 mA) and improved tolerance (±10% vs. ±20%), providing design margin for applications originally specified for the ELL-ATV821M.

Parameter Comparison

Engineering Selection Recommendations

The SRR1260-821K qualifies as a direct functional substitute for the ELL-ATV821M based on matching inductance specification, identical core material, and equivalent shielding configuration. Both components maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and moisture sensitivity alignment.

The substitute demonstrates superior electrical performance with doubled current rating capacity (730 mA vs. 340 mA) and tighter inductance tolerance (±10% vs. ±20%). These characteristics provide enhanced design margin without compromising original circuit function.

Physical dimension differences require PCB layout verification. The SRR1260-821K occupies a larger footprint (12.50mm x 12.50mm vs. 10.00mm x 10.00mm) with increased height (6.50mm vs. 4.50mm). Space-constrained applications must confirm accommodation before implementation.

The active product status of the SRR1260-821K ensures long-term supply availability, addressing the obsolescence constraint of the original ELL-ATV821M component.

Frequently Asked Questions (FAQ)

Q: Can the SRR1260-821K directly replace the ELL-ATV821M without circuit modification?

A: Yes, for applications within the original 340 mA current specification. The matching 820 µH inductance, ferrite core material, and shielded configuration ensure functional equivalence. PCB layout must accommodate the larger physical dimensions.

Q: What are the key differences between these components?

A: The SRR1260-821K provides higher current rating (730 mA), tighter tolerance (±10%), and active product status. Physical size is larger, and DC resistance is specified as maximum 1.5Ohm versus 1.27Ohm nominal.

Q: Is the increased DC resistance of the SRR1260-821K acceptable?

A: The 0.23Ohm difference (1.5Ohm max vs. 1.27Ohm) must be evaluated against circuit power dissipation requirements. For low-current applications, this variance typically remains within acceptable operating margins.

Q: Will the larger package size affect circuit performance?

A: Package size affects PCB layout only. Electrical performance remains equivalent when inductance, core material, and shielding specifications match. Physical accommodation must be verified during design integration.

Q: Are both components suitable for high-temperature applications?

A: The SRR1260-821K specifies -40°C to 125°C operating range. The ELL-ATV821M operating temperature is not specified in available documentation. Temperature requirements must be confirmed against application specifications.

Q: What is the significance of the ±10% tolerance improvement in the substitute?

A: Tighter tolerance reduces inductance variation across production batches, improving circuit consistency and reducing design margin requirements. This benefits applications with strict inductance specifications.