ELL-4LM3R3N Equivalent & Substitute Parts

Part Overview

The ELL-4LM3R3N is a 3.3 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.1 A with a DC resistance of 62 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates at a test frequency of 100 kHz and is housed in a nonstandard surface mount package measuring 3.80mm x 3.80mm x 1.80mm (max height).

Substiute Parts

ELL-4LM3R3N

Panasonic Electronic ComponentsIn Stock: 820ELL-4LM3R3N Datasheet

Current PartRFQ

CDRH3D16NP-3R3NC

Sumida America Components Inc.In Stock: 16775CDRH3D16NP-3R3NC Datasheet

SimilarRFQ

LMLP04B4N3R3CTAS

KYOCERA AVXIn Stock: 848LMLP04B4N3R3CTAS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELL-4LM3R3N are qualified based on the following critical parameters:

• Inductance Value: 3.3 µH (exact match required)
• Current Rating: Minimum 1.1 A (equal or higher acceptable)
• DC Resistance: Maximum 85 mOhm (within acceptable operating range)
• Shielding: Shielded construction required
• Mounting Type: Surface mount configuration
• Package Footprint: 3.80mm x 3.80mm base dimensions with compatible height
• Tolerance: ±30% (standard for this category)
• Test Frequency: 100 kHz

The two qualified substitutes meet these electrical and mechanical requirements while offering active product status and improved availability compared to the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

CDRH3D16NP-3R3NC (Sumida America Components Inc.) is the primary substitute option. This part maintains identical inductance, current rating, and package footprint dimensions as the ELL-4LM3R3N. The DC resistance of 85 mOhm maximum is within acceptable tolerance for this application category. The part carries active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory alignment.

LMLP04B4N3R3CTAS (KYOCERA AVX) is an alternative substitute with enhanced specifications. This part provides a higher current rating of 1.23 A and lower DC resistance of 70 mOhm, offering improved thermal performance. The extended operating temperature range of -40°C to 125°C provides additional margin for demanding environments. The package footprint is slightly larger at 4.00mm x 4.00mm, requiring PCB layout verification. This part also carries ROHS3 compliance and active product status.

Both substitutes are qualified for direct replacement based on electrical parameters and mechanical compatibility. Selection between them depends on PCB layout constraints and thermal performance requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can CDRH3D16NP-3R3NC be used as a direct replacement for ELL-4LM3R3N?

A: Yes. Both parts share identical inductance (3.3 µH), current rating (1.1 A), and package footprint (3.80mm x 3.80mm). The DC resistance difference (85 mOhm vs. 62 mOhm) falls within acceptable operating parameters for this inductor category.

Q: What is the difference between the two substitute parts?

A: CDRH3D16NP-3R3NC maintains the exact package footprint of the original part (3.80mm x 3.80mm). LMLP04B4N3R3CTAS has a slightly larger footprint (4.00mm x 4.00mm) but offers higher current rating (1.23 A), lower DC resistance (70 mOhm), and extended temperature range (-40°C to 125°C). Both meet the core electrical requirements.

Q: Does the DC resistance difference affect circuit performance?

A: DC resistance affects power dissipation and thermal characteristics. The CDRH3D16NP-3R3NC has higher DCR (85 mOhm max) compared to the original (62 mOhm), resulting in increased resistive losses. The LMLP04B4N3R3CTAS (70 mOhm) provides a middle ground. Circuit simulation or thermal analysis may be required for power-sensitive applications.

Q: Are both substitutes RoHS compliant?

A: Yes. Both CDRH3D16NP-3R3NC and LMLP04B4N3R3CTAS carry ROHS3 compliance certification, meeting current regulatory requirements for electronic components.

Q: What is the impact of the package size difference?

A: LMLP04B4N3R3CTAS uses a 4.00mm x 4.00mm footprint versus the 3.80mm x 3.80mm footprint of the original and CDRH3D16NP-3R3NC. PCB layout must accommodate this larger footprint. Height remains compatible at 1.80mm maximum for all parts.

Q: Which substitute should be selected for new designs?

A: For direct footprint compatibility, select CDRH3D16NP-3R3NC. For applications requiring enhanced thermal performance or extended temperature operation, select LMLP04B4N3R3CTAS if PCB layout permits the larger footprint.