CDH63NP-6R8MC Equivalent & Substitute Parts

Part Overview

The CDH63NP-6R8MC is a 6.8 µH unshielded wirewound inductor manufactured by Sumida America Components Inc., rated for 1.3 A continuous current with a maximum DC resistance of 144mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part is RoHS3 compliant and features unlimited moisture sensitivity rating (MSL 1), suitable for surface mount applications in standard operating environments.

Substiute Parts

CDH63NP-6R8MC

Sumida America Components Inc.In Stock: 815CDH63NP-6R8MC Datasheet

Current PartRFQ

B82462A4682M000

EPCOS - TDK ElectronicsIn Stock: 2941B82462A4682M000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH63NP-6R8MC is determined by strict equivalence across the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 6.8 µH inductance with ±20% tolerance, tested at 100 kHz.

Current Ratings: The substitute must support the continuous current requirement of 1.3 A minimum. Saturation current (Isat) must not fall below the operating current envelope.

DC Resistance: The substitute's maximum DC resistance must not exceed 144 mOhm to maintain equivalent power dissipation characteristics.

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

Mounting and Package: Surface mount configuration with nonstandard package dimensions (approximately 6.30mm x 6.10mm footprint, 2.90mm height maximum) must be maintained.

Compliance Standards: RoHS3 compliance and MSL 1 rating are required for manufacturing and storage compatibility.

The B82462A4682M000 substitute meets all these criteria while offering improved specifications in current rating, saturation current, and DC resistance, with the additional benefit of active product status and AEC-Q200 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The B82462A4682M000 is a direct functional substitute for the obsolete CDH63NP-6R8MC based on electrical parameter equivalence. The substitute provides superior performance margins across all critical specifications: 7.7% higher continuous current rating (1.4 A vs. 1.3 A), 53% higher saturation current (2.3 A vs. 1.5 A), and 30.6% lower DC resistance (100 mOhm vs. 144 mOhm).

Both parts maintain identical inductance value and tolerance at the 100 kHz test frequency, ensuring circuit performance equivalence. Physical dimensions are comparable within acceptable PCB layout tolerances (6.00mm vs. 6.30mm length, 3.00mm vs. 2.90mm height maximum).

The substitute's active product status ensures long-term availability and supply chain continuity. AEC-Q200 automotive qualification of the B82462A4682M000 provides additional reliability assurance beyond the base RoHS3 compliance shared by both parts. Both components maintain MSL 1 (unlimited) moisture sensitivity rating, eliminating special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the B82462A4682M000 be used as a direct replacement for CDH63NP-6R8MC in existing designs?

A: Yes. Both parts meet the critical substitution criteria: identical 6.8 µH inductance at ±20% tolerance, equivalent unshielded wirewound construction, surface mount configuration, and comparable physical dimensions. The substitute's improved current and saturation ratings provide additional design margin without circuit modification.

Q: What are the physical dimension differences between these parts?

A: The main part measures 6.30mm L x 6.10mm W x 2.90mm H (max). The substitute measures 6.00mm L x 6.00mm W x 3.00mm H (max). These differences are within standard PCB layout tolerances for nonstandard surface mount packages. Verify footprint compatibility with your specific PCB design before implementation.

Q: Does the substitute's lower DC resistance affect circuit operation?

A: The substitute's 100 mOhm maximum DC resistance (versus 144 mOhm for the main part) reduces power dissipation and heat generation. This represents an improvement in efficiency and thermal performance. No circuit redesign is required; the lower resistance is functionally equivalent or superior for all applications within the current rating envelope.

Q: Are there compliance or certification differences between these parts?

A: Both parts are RoHS3 compliant with MSL 1 rating. The substitute carries AEC-Q200 automotive qualification and specifies an operating temperature range of -55°C to 150°C. The main part's operating temperature is not specified. For applications requiring automotive-grade reliability or extended temperature operation, the substitute provides documented performance assurance.

Q: What is the significance of the substitute's 40 MHz self-resonant frequency?

A: The self-resonant frequency (SRF) of 40 MHz indicates the frequency at which the inductor's parasitic capacitance begins to dominate its behavior. This specification is not provided for the main part. For applications operating below 40 MHz, this parameter does not affect substitution validity. For high-frequency applications approaching or exceeding this frequency, verify that the original design does not depend on specific SRF characteristics.

Q: Why is the main part classified as obsolete?

A: Obsolete status indicates the CDH63NP-6R8MC is no longer manufactured or supported by Sumida America Components Inc. The B82462A4682M000 substitute is actively produced by EPCOS - TDK Electronics, ensuring continued availability and supply chain reliability for new designs and ongoing production support.