0420CDMCBDS-3R3MC Equivalent & Substitute Parts

Part Overview

The 0420CDMCBDS-3R3MC is a 3.3 µH shielded wirewound inductor manufactured by Sumida America Components Inc., rated for 3.3 A continuous current with 49mOhm DC resistance. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 105°C and is RoHS3 compliant with MSL 1 rating.

Substiute Parts

0420CDMCBDS-3R3MC

Sumida America Components Inc.In Stock: 8840420CDMCBDS-3R3MC Datasheet

Current PartRFQ

MPLCG0530L3R3

KEMETIn Stock: 786MPLCG0530L3R3 Datasheet

SimilarRFQ

UP2.8B-3R3-R

Eaton - Electronics DivisionIn Stock: 1117UP2.8B-3R3-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0420CDMCBDS-3R3MC is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.3 µH at 100 kHz test frequency
• Inductance tolerance: ±20%
• Mounting type: Surface Mount
• Shielding requirement: Shielded
• Operating temperature compatibility: Minimum -40°C to 105°C

Secondary Compatibility Factors:

• Current rating: Minimum 3.3 A continuous
• DC resistance: Maximum 49mOhm (lower values acceptable)
• Saturation current: Minimum 4.1 A
• RoHS compliance status
• Moisture sensitivity level

Substitute parts must maintain the shielded configuration and surface mount form factor. Variations in package dimensions, core material, and manufacturer are acceptable provided electrical parameters remain within specified tolerances and operational limits.

Parameter Comparison

Engineering Selection Recommendations

MPLCG0530L3R3 (KEMET) - Primary Substitute:

The MPLCG0530L3R3 is the preferred substitute for the obsolete 0420CDMCBDS-3R3MC. This part maintains shielded configuration, matches the 3.3 µH inductance specification, and provides superior current rating (3.6 A versus 3.3 A). The extended operating temperature range (-40°C to 125°C) exceeds the original specification. DC resistance of 58 mOhm is marginally higher but remains within acceptable tolerance for most applications. Active product status ensures long-term availability and supply chain stability. REACH compliance status confirms regulatory alignment.

UP2.8B-3R3-R (Eaton) - Secondary Substitute:

The UP2.8B-3R3-R is a secondary option with specific application constraints. This part is listed as the original substitute in the 0420CDMCBDS-3R3MC documentation. However, the unshielded configuration differs from the main part's shielded design, which may impact electromagnetic compatibility in noise-sensitive applications. The 2.8 A current rating is below the original 3.3 A specification, limiting use to lower-current designs. The operating temperature maximum of 85°C is also reduced compared to the original 105°C rating. DC resistance of 47.4 mOhm is favorable. This part is suitable only when shielding is not required and current demands do not exceed 2.8 A.

Compliance and Regulatory Status:

Both substitute parts maintain RoHS compliance. The KEMET part carries REACH Unaffected status, while the Eaton part is RoHS Compliant. Both are suitable for applications requiring environmental regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can MPLCG0530L3R3 directly replace 0420CDMCBDS-3R3MC in existing designs?

A: The MPLCG0530L3R3 is electrically compatible at the 3.3 µH inductance specification with matching tolerance. Both parts are shielded surface mount inductors with compatible current ratings. Physical dimensions differ (5.50mm x 5.00mm versus 4.50mm x 4.10mm), requiring PCB layout verification. Electrical performance is equivalent for applications operating within 3.3 A continuous current.

Q: Why is UP2.8B-3R3-R listed as a substitute if it has lower current rating?

A: The UP2.8B-3R3-R is documented as an original substitute in the 0420CDMCBDS-3R3MC specification. This part is suitable for applications where continuous current does not exceed 2.8 A. The unshielded design may be acceptable in applications without electromagnetic interference constraints. Selection depends on specific circuit requirements.

Q: What are the key differences between shielded and unshielded inductors?

A: Shielded inductors (0420CDMCBDS-3R3MC and MPLCG0530L3R3) contain magnetic field within the component, reducing electromagnetic interference with adjacent circuits. Unshielded inductors (UP2.8B-3R3-R) allow magnetic field radiation, which may couple with nearby components. Shielded designs are required in noise-sensitive applications and high-density PCB layouts.

Q: Are there temperature range limitations when substituting?

A: The original part operates -40°C to 105°C. The MPLCG0530L3R3 extends this to -40°C to 125°C, providing additional margin. The UP2.8B-3R3-R is limited to -40°C to 85°C, which is below the original specification. For applications requiring the full -40°C to 105°C range, the MPLCG0530L3R3 is the appropriate choice.

Q: How does DC resistance affect circuit performance?

A: DC resistance (DCR) determines resistive losses in the inductor. The original part specifies 49 mOhm. The MPLCG0530L3R3 has 58 mOhm maximum, resulting in approximately 18% higher losses. The UP2.8B-3R3-R has 47.4 mOhm maximum, providing lower losses. For power-sensitive applications, lower DCR is preferable. For signal filtering applications, the difference is typically negligible.

Q: What is the significance of saturation current (Isat)?

A: Saturation current indicates the point at which inductor core saturates and inductance degrades. The original part saturates at 4.1 A. The MPLCG0530L3R3 saturates at 3.1 A, requiring derating in high-current transient conditions. The UP2.8B-3R3-R saturates at 4.5 A, providing additional margin. For applications with current transients, saturation current must exceed peak current levels.

Q: Is MSL (Moisture Sensitivity Level) 1 critical for selection?

A: MSL 1 indicates unlimited shelf life without moisture control requirements. Both the original part and UP2.8B-3R3-R specify MSL 1. The MPLCG0530L3R3 does not specify MSL rating. For applications with extended storage or high-humidity environments, MSL 1 rated parts are preferred.