CDH63NP-470KC Equivalent & Substitute Parts

Part Overview

The CDH63NP-470KC is a 47 µH unshielded wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 480 mA continuous current with a maximum DC resistance of 1 Ohm and operates at a test frequency of 100 kHz. The part is classified as obsolete, making identification of suitable equivalent components necessary for ongoing design support and procurement continuity.

Substiute Parts

CDH63NP-470KC

Sumida America Components Inc.In Stock: 1290CDH63NP-470KC Datasheet

Current PartRFQ

B82462A4473K000

EPCOS - TDK ElectronicsIn Stock: 5025B82462A4473K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH63NP-470KC is determined by the following critical parameters:

Inductance Value: 47 µH at 100 kHz test frequency must be maintained within the specified ±10% tolerance band.

Current Rating: The substitute must support the application's current requirements. The main part is rated for 480 mA continuous current with 590 mA saturation current.

DC Resistance: The substitute's DCR must be compatible with circuit performance. The main part specifies 1 Ohm maximum.

Shielding Configuration: Both parts must be unshielded to maintain electromagnetic compatibility with the original design.

Mounting and Package: Surface mount configuration is required for PCB integration.

Compliance Standards: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental requirements.

The B82462A4473K000 qualifies as a substitute based on matching inductance value, unshielded configuration, surface mount type, and compliance certifications, while offering improved current handling and lower DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The B82462A4473K000 is suitable as a substitute for the CDH63NP-470KC based on the following engineering criteria:

Inductance Compatibility: Both parts maintain 47 µH inductance at 100 kHz with ±10% tolerance, ensuring circuit performance equivalence.

Current Handling: The B82462A4473K000 provides 540 mA continuous current rating and 820 mA saturation current, exceeding the original part's 480 mA and 590 mA specifications. This provides design margin for current-dependent applications.

DC Resistance Advantage: The substitute offers 640 mOhm maximum DCR compared to the original 1 Ohm maximum, resulting in lower power dissipation and improved thermal performance.

Compliance and Availability: The B82462A4473K000 is active in production with ROHS3 compliance, AEC-Q200 automotive qualification, and MSL 1 rating. The original CDH63NP-470KC is obsolete, making the substitute the appropriate choice for new designs and ongoing procurement.

Physical Compatibility: Footprint dimensions are comparable (6.00mm x 6.00mm versus 6.30mm x 6.10mm), with height variation of 0.10mm (3.00mm versus 2.90mm), permitting PCB layout accommodation.

Frequently Asked Questions (FAQ)

Q: Can the B82462A4473K000 directly replace the CDH63NP-470KC in existing designs?

A: Yes, for applications where the original part's electrical specifications are met. The substitute maintains 47 µH inductance and ±10% tolerance at 100 kHz. Verify PCB footprint clearance due to minor dimensional differences (6.00mm x 6.00mm versus 6.30mm x 6.10mm).

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

A: The B82462A4473K000 DCR of 640 mOhm maximum versus 1 Ohm maximum reduces resistive losses by approximately 36%. This results in lower heat generation and improved efficiency in current-carrying applications.

Q: Are both parts RoHS compliant?

A: Yes, both the CDH63NP-470KC and B82462A4473K000 are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) ratings.

Q: What is the difference between wirewound and drum core wirewound construction?

A: The CDH63NP-470KC uses standard wirewound construction, while the B82462A4473K000 uses drum core wirewound construction with ferrite core material. Both are unshielded and maintain equivalent inductance values at the specified test frequency.

Q: Does the substitute part have automotive qualification?

A: Yes, the B82462A4473K000 carries AEC-Q200 qualification, indicating suitability for automotive applications. The original CDH63NP-470KC does not list this certification.

Q: What is the self-resonant frequency of the substitute?

A: The B82462A4473K000 has a self-resonant frequency of 12 MHz, providing frequency response data not available for the original part.