CDEP106NP-1R4MC-88 Equivalent & Substitute Parts

Part Overview

The CDEP106NP-1R4MC-88 is a 1.4 µH shielded drum core, wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 17.5 A continuous current with a maximum DC resistance of 2.3 mOhm and operates across the temperature range of -40°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Significance for Substitution
Inductance	1.4 µH	Core electrical specification; must match exactly
Current Rating (Amps)	17.5 A	Thermal and saturation performance; substitute must meet or exceed
DC Resistance (DCR)	2.3 mOhm Max	Power loss and thermal characteristics; lower values preferred
Current - Saturation (Isat)	12 A	Maximum usable current before inductance degradation
Shielding	Shielded	EMI containment; must be maintained
Mounting Type	Surface Mount	PCB assembly compatibility
Operating Temperature	-40°C ~ 105°C	Environmental operating range
RoHS Status	ROHS3 Compliant	Regulatory compliance requirement

Substitute Part Grouping Explanation

Substitution of the CDEP106NP-1R4MC-88 is based on the following critical parameters:

Mandatory Matching Criteria:

Inductance value: 1.4 µH (±20% tolerance acceptable)
Core type: Drum core, wirewound, ferrite material
Shielding: Shielded configuration
Mounting: Surface mount technology

Performance Criteria:

Current rating must equal or exceed 17.5 A
DC resistance should not exceed 2.3 mOhm to maintain thermal performance
Saturation current (Isat) should support the application's peak current requirements

Compliance Criteria:

RoHS3 compliance required
Operating temperature range must encompass -40°C to 105°C minimum

The identified substitute B82559A0142A013 meets all mandatory matching criteria and demonstrates improved electrical performance characteristics.

Parameter Comparison

Parameter	CDEP106NP-1R4MC-88	B82559A0142A013	Compatibility Assessment
Inductance	1.4 µH	1.4 µH	Exact match
Inductance Tolerance	±20%	±10%	Substitute offers tighter tolerance
Current Rating (Amps)	17.5 A	22 A	Substitute exceeds requirement by 4.5 A
Current - Saturation (Isat)	12 A	22 A	Substitute provides higher saturation margin
DC Resistance (DCR)	2.3 mOhm Max	1.5 mOhm	Substitute offers 35% lower resistance
Shielding	Shielded	Shielded	Equivalent
Core Material	Ferrite	Ferrite	Equivalent
Type	Drum Core, Wirewound	Drum Core, Wirewound	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature	-40°C ~ 105°C	-40°C ~ 130°C	Substitute supports extended range
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Obsolete	Active	Substitute actively manufactured
Size / Dimension	0.394" L x 0.394" W (10.00mm x 10.00mm)	0.512" L x 0.421" W (13.00mm x 10.70mm)	Substitute is larger; PCB layout verification required
Height - Seated (Max)	0.256" (6.50mm)	0.236" (6.00mm)	Substitute is 0.5mm lower

Engineering Selection Recommendations

The B82559A0142A013 manufactured by EPCOS - TDK Electronics is a direct functional substitute for the obsolete CDEP106NP-1R4MC-88. Selection is supported by the following engineering factors:

Electrical Performance: The substitute meets all electrical requirements with improved specifications. The 1.4 µH inductance value is identical, current rating is increased from 17.5 A to 22 A, and DC resistance is reduced from 2.3 mOhm to 1.5 mOhm, resulting in lower power dissipation and improved thermal performance.

Regulatory Compliance: Both components maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity), ensuring compatibility with standard manufacturing and storage protocols.

Product Availability: The substitute is classified as active product with confirmed inventory of 4226 pieces, providing long-term procurement security compared to the obsolete original part.

Physical Considerations: The substitute component is slightly larger in length and width (13.00mm x 10.70mm versus 10.00mm x 10.00mm) but 0.5mm lower in height. PCB layout verification is necessary to confirm footprint compatibility within the available board space.

Temperature Performance: The substitute operates across -40°C to 130°C, exceeding the original -40°C to 105°C range and providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can B82559A0142A013 be used as a direct replacement for CDEP106NP-1R4MC-88 without circuit modification?

A: Yes, from an electrical standpoint. Both components provide 1.4 µH inductance with shielded drum core construction. The substitute offers superior current handling (22 A versus 17.5 A) and lower DC resistance (1.5 mOhm versus 2.3 mOhm). However, physical dimensions differ; PCB layout must be verified to confirm the substitute fits within the allocated space.

Q: What is the significance of the lower DC resistance in the substitute part?

A: Lower DC resistance (1.5 mOhm versus 2.3 mOhm) reduces resistive power loss during operation. This results in lower heat generation, improved efficiency, and reduced thermal stress on the component and surrounding circuitry.

Q: Why does the substitute have a higher current rating?

A: The B82559A0142A013 is designed with enhanced current-handling capability (22 A versus 17.5 A) and higher saturation current (22 A versus 12 A). This provides additional design margin and allows the component to operate reliably under peak current conditions without inductance degradation.

Q: Are there packaging differences between these components?

A: Yes. The original CDEP106NP-1R4MC-88 is supplied in standard packaging, while the B82559A0142A013 is supplied in Tape & Reel (TR) format. This is advantageous for automated assembly processes and does not affect component functionality.

Q: What is the impact of the size difference on PCB design?

A: The substitute is 3.00mm longer and 0.70mm wider but 0.5mm lower in height. The footprint change requires PCB layout verification to ensure the component fits within the allocated space and does not create clearance issues with adjacent components or traces.

Q: Is the extended operating temperature range of the substitute beneficial?

A: Yes. The substitute's -40°C to 130°C range exceeds the original -40°C to 105°C specification, providing additional thermal margin for applications operating at elevated temperatures or in thermally demanding environments.

Q: Are both components RoHS compliant?

A: Yes. Both CDEP106NP-1R4MC-88 and B82559A0142A013 are ROHS3 compliant, ensuring compatibility with modern manufacturing standards and regulatory requirements.

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