ELL-5PM470M Equivalent & Substitute Parts

Part Overview

The ELL-5PM470M is a 47 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 450 mA with a DC resistance of 440mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part is designed for surface mount applications in compact form factors and operates at a test frequency of 100 kHz.

Substiute Parts

ELL-5PM470M

Panasonic Electronic ComponentsIn Stock: 1193ELL-5PM470M Datasheet

Current PartRFQ

VLCF4028T-470MR48-2

TDK CorporationIn Stock: 1741VLCF4028T-470MR48-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELL-5PM470M is based on the following critical parameters:

• Inductance Value: 47 µH (exact match required)
• Tolerance: ±20% (must be maintained)
• Current Rating: Minimum 450 mA (equal or higher acceptable)
• DC Resistance: Maximum 440mOhm baseline (minor variations acceptable within engineering tolerance)
• Shielding: Shielded construction (required for EMI performance)
• Mounting Type: Surface Mount (form factor compatibility)
• Test Frequency: 100 kHz (electrical characterization standard)

The VLCF4028T-470MR48-2 from TDK Corporation qualifies as a direct substitute based on matching inductance, tolerance, shielding, and mounting specifications. The substitute demonstrates improved current rating (480 mA vs. 450 mA) and active product status, providing enhanced availability and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The VLCF4028T-470MR48-2 is the qualified substitute for the obsolete ELL-5PM470M based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical inductance (47 µH) and tolerance (±20%) at the 100 kHz test frequency. The substitute provides higher current rating (480 mA vs. 450 mA), ensuring adequate headroom for the original design specification of 450 mA.

DC Resistance: The substitute exhibits 490mOhm maximum DCR compared to the original 440mOhm. This 50mOhm increase represents a 11.4% variance and falls within acceptable engineering tolerance for inductor substitution in most applications.

Compliance and Availability: The TDK substitute is active in production with ROHS3 compliance and improved moisture sensitivity rating (MSL 1 vs. MSL 2), providing superior long-term reliability and procurement continuity.

Physical Considerations: The substitute features a smaller footprint (4.00mm x 4.00mm vs. 5.20mm x 5.20mm) with slightly increased height (2.80mm vs. 2.00mm). PCB layout verification is required to confirm mechanical fit within the original design envelope.

Frequently Asked Questions (FAQ)

Q: Can the VLCF4028T-470MR48-2 directly replace the ELL-5PM470M without circuit modification?

A: Electrical substitution is valid based on matching inductance, tolerance, and current rating specifications. Physical PCB layout must be verified due to dimensional differences (smaller footprint, increased height).

Q: What is the significance of the DC resistance difference (440mOhm vs. 490mOhm)?

A: The 50mOhm increase represents approximately 11.4% higher resistance. For applications sensitive to inductor losses, thermal performance and power dissipation should be recalculated using the substitute's DCR value.

Q: Why is the substitute smaller in footprint but taller in height?

A: The VLCF4028T-470MR48-2 uses drum core construction with ferrite material, enabling more compact lateral dimensions while requiring greater vertical space for the winding structure.

Q: Does the improved moisture sensitivity rating (MSL 1 vs. MSL 2) affect compatibility?

A: No. MSL 1 (unlimited shelf life) is superior to MSL 2 (1 year) and provides better long-term storage stability. This is a performance advantage with no compatibility concerns.

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

A: The substitute is ROHS3 compliant with REACH unaffected status. The original part's compliance certifications are not specified. Both parts carry EAR99 ECCN classification.