Equivalent & Substitute Parts for 0420CDMCDS-4R7MC

Part Overview

The 0420CDMCDS-4R7MC is a 4.7 µH shielded wirewound inductor manufactured by Sumida America Components Inc., rated for 3.1 A continuous current with 67 mOhm DC resistance. This component is classified as obsolete, necessitating identification of active substitute parts that maintain electrical and mechanical compatibility for surface mount applications in the 1816 (4540 Metric) package class.

Substiute Parts

0420CDMCDS-4R7MC

Sumida America Components Inc.In Stock: 180280420CDMCDS-4R7MC Datasheet

Current PartRFQ

MPLCG0530L4R7

KEMETIn Stock: 3970MPLCG0530L4R7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0420CDMCDS-4R7MC is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value: 4.7 µH at 100 kHz test frequency
• Inductance tolerance: ±20%
• Current rating: minimum 3.1 A continuous
• DC resistance: within acceptable range for application (reference 67 mOhm)
• Saturation current: minimum 3.0 A

Mechanical Compatibility Criteria:

• Mounting type: Surface Mount
• Shielding: Shielded construction required
• Operating temperature range: minimum -40°C to 105°C

Compliance Criteria:

• RoHS3 compliance required
• ECCN classification: EAR99

The MPLCG0530L4R7 from KEMET meets all electrical parameters within specified tolerances. Physical package dimensions differ from the original 1816 form factor; however, the substitute maintains equivalent electrical performance and surface mount compatibility.

Parameter Comparison

Engineering Selection Recommendations

The MPLCG0530L4R7 is an active substitute for the obsolete 0420CDMCDS-4R7MC based on the following factors:

Product Status: The original part is obsolete. The MPLCG0530L4R7 is active and available with 3,896 units in stock, ensuring supply continuity.

Electrical Parameters: All critical electrical specifications align within acceptable tolerances. DC resistance increases from 67 mOhm to 74 mOhm maximum, representing a 10.4% increase. Saturation current decreases from 3.4 A to 3.0 A, remaining above the 3.1 A rated current. Both variations fall within normal engineering margins for inductor substitution.

Compliance: Both parts carry ECCN EAR99 classification. The substitute maintains regulatory compliance for RoHS requirements.

Thermal Performance: The KEMET substitute extends the upper operating temperature limit to 125°C, providing enhanced thermal margin compared to the original 105°C specification.

Physical Considerations: The substitute uses a nonstandard package (5.50mm × 5.00mm × 3.00mm) compared to the original 1816 form factor (4.50mm × 4.10mm × 2.00mm). PCB layout and thermal management must account for the larger footprint and increased height.

Frequently Asked Questions (FAQ)

Q: Can the MPLCG0530L4R7 directly replace the 0420CDMCDS-4R7MC without circuit modification?

A: Electrical substitution is valid. The inductance value, tolerance, current rating, and shielding are equivalent. However, the larger physical dimensions require PCB layout verification to confirm mechanical fit within the available space.

Q: What is the significance of the 7 mOhm increase in DC resistance?

A: The KEMET substitute specifies 74 mOhm maximum DCR compared to 67 mOhm for the original. This 10.4% increase results in marginally higher resistive losses. For applications where DCR is critical to performance, thermal and efficiency analysis is required to confirm acceptability.

Q: Does the lower saturation current of 3.0 A in the substitute create a limitation?

A: The substitute's 3.0 A saturation current remains above the 3.1 A rated continuous current. However, transient current spikes exceeding 3.0 A will cause inductor saturation. Circuit design must ensure peak currents remain below this threshold.

Q: Are there package compatibility concerns?

A: Yes. The substitute uses a nonstandard package measuring 5.50mm × 5.00mm × 3.00mm, compared to the original 1816 (4.50mm × 4.10mm × 2.00mm). The substitute is 1.0 mm wider, 0.9 mm longer, and 1.0 mm taller. PCB footprint and clearance to adjacent components must be verified before implementation.

Q: What is the inventory status for the substitute part?

A: The MPLCG0530L4R7 has 3,896 units in stock as new original inventory, providing adequate supply for production requirements.