ELL-ATV102M Equivalent & Substitute Parts Reference

Part Overview

The Panasonic ELL-ATV102M is a 1 mH shielded drum core wirewound inductor rated for 320 mA with 1.75Ω DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates at 100 kHz inductance test frequency and is housed in a nonstandard 10.00mm × 10.00mm surface mount package with 4.50mm maximum seated height.

Substiute Parts

ELL-ATV102M

Panasonic Electronic ComponentsIn Stock: 1008ELL-ATV102M Datasheet

Current PartRFQ

NS10145T102MNA

Taiyo YudenIn Stock: 1981NS10145T102MNA Datasheet

SimilarRFQ

SDR1045-102K

Bourns Inc.In Stock: 5792SDR1045-102K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-ATV102M is determined by the following critical parameters:

• Inductance Value: Must be 1 mH (±20% tolerance acceptable)
• Current Rating: Minimum 320 mA required
• Core Material: Ferrite drum core construction
• Mounting Type: Surface mount only
• Package Footprint: Nonstandard 10.00mm × 10.00mm base dimensions
• Shielding Requirement: Shielded construction preferred for EMI-sensitive applications
• DC Resistance: Lower DCR values reduce power dissipation; higher values acceptable if current rating is maintained
• Compliance: ROHS3 compliance required

Two substitute parts meet these criteria with documented compatibility:

1. Taiyo Yuden NS10145T102MNA — Maintains shielded construction, identical inductance and current rating, higher DCR (3.096Ω max)
2. Bourns SDR1045-102K — Unshielded variant, higher current rating (380 mA), higher DCR (4.7Ω max), active product status

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The Taiyo Yuden NS10145T102MNA provides the closest functional equivalence to the ELL-ATV102M. Both components maintain shielded construction, identical 1 mH inductance, and 320 mA current rating. The higher DC resistance (3.096Ω max versus 1.75Ω) results in increased power dissipation but remains acceptable for applications where the original part was specified. This substitute is ROHS3 compliant and carries MSL 1 rating. However, the product status is "Not For New Designs," limiting its use to legacy system maintenance.

For New Designs or Long-Term Availability:

The Bourns SDR1045-102K is the only active-status substitute and provides superior long-term availability. It maintains the 1 mH inductance specification with tighter tolerance (±10% versus ±20%), higher current rating (380 mA), and higher saturation current (400 mA). The unshielded construction may introduce EMI considerations in noise-sensitive circuits. The increased DC resistance (4.7Ω max) requires thermal analysis in power-constrained applications. This part is ROHS3 compliant, MSL 1 rated, and available in Tape & Reel packaging.

Substitution Constraints:

• Shielded construction is not available in active-status alternatives; unshielded substitution requires EMI assessment
• All substitutes exhibit higher DC resistance, increasing power dissipation proportionally
• Package dimensions vary slightly (height up to 4.85mm); PCB layout clearance verification is required
• Inductance tolerance tightens in the Bourns part (±10%), improving circuit performance predictability

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR1045-102K replace the ELL-ATV102M in shielded applications?

A: The SDR1045-102K is unshielded, whereas the ELL-ATV102M is shielded. Substitution is possible only if EMI performance is not critical to circuit operation. Shielded alternatives are limited to the Taiyo Yuden NS10145T102MNA, which carries "Not For New Designs" status.

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

A: Higher DC resistance increases I²R power dissipation. At 320 mA, the ELL-ATV102M dissipates 0.179 W, while the NS10145T102MNA dissipates 0.317 W, and the SDR1045-102K dissipates 0.475 W. Thermal management and component derating must be reassessed for applications with tight thermal budgets.

Q: Are the package dimensions compatible with existing PCB layouts?

A: The ELL-ATV102M footprint is 10.00mm × 10.00mm × 4.50mm (max height). The NS10145T102MNA is 10.10mm × 10.10mm × 4.85mm (max height), and the SDR1045-102K is 10.00mm × 10.00mm × 4.80mm (max height). Verify PCB layout clearances, particularly for height-constrained designs.

Q: Which substitute is recommended for new product designs?

A: The Bourns SDR1045-102K is the only active-status part and is recommended for new designs requiring long-term supply chain stability. The Taiyo Yuden NS10145T102MNA is suitable only for legacy system maintenance due to its "Not For New Designs" classification.

Q: Do all substitutes meet RoHS and MSL requirements?

A: Yes. All three parts (ELL-ATV102M, NS10145T102MNA, and SDR1045-102K) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting standard industrial compliance requirements.

Q: What is the difference between shielded and unshielded construction?

A: Shielded inductors (ELL-ATV102M, NS10145T102MNA) contain a ferrite shield that reduces radiated EMI and susceptibility to external magnetic fields. Unshielded inductors (SDR1045-102K) offer lower cost and smaller profile but may couple noise into adjacent circuits. Selection depends on circuit EMI requirements.