CDH113NP-221KC Equivalent & Substitute Parts

Part Overview

The CDH113NP-221KC is a 220 µH unshielded wirewound surface mount inductor manufactured by Sumida America Components Inc. This component is rated for 430 mA continuous current with a maximum DC resistance of 900mOhm and operates across the temperature range of -30°C to 100°C. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

CDH113NP-221KC

Sumida America Components Inc.In Stock: 791CDH113NP-221KC Datasheet

Current PartRFQ

CDH115NP-221KC

Sumida America Components Inc.In Stock: 1112CDH115NP-221KC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH113NP-221KC is determined by the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 220 µH ±10% inductance at 1 kHz test frequency to ensure circuit performance equivalence.

Current Rating: The substitute must support the application's current requirements. The CDH113NP-221KC operates at 430 mA; substitutes with equal or higher current ratings are acceptable.

DC Resistance (DCR): The maximum DCR of 900mOhm establishes the power dissipation and thermal characteristics. Substitutes with lower DCR values reduce losses and improve efficiency.

Physical Footprint: Surface mount inductors must maintain compatible dimensions (11.20mm x 11.00mm) and height (3.70mm max) to ensure PCB layout compatibility.

Shielding Configuration: Both parts are unshielded, maintaining consistent electromagnetic coupling characteristics.

Environmental Compliance: RoHS3 compliance and MSL rating of 1 ensure regulatory and manufacturing process compatibility.

The CDH115NP-221KC qualifies as a substitute based on matching inductance, shielding, footprint dimensions, and compliance certifications while providing enhanced current handling capability.

Parameter Comparison

Engineering Selection Recommendations

The CDH115NP-221KC is the qualified substitute for the obsolete CDH113NP-221KC based on the following engineering criteria:

Inductance Equivalence: Both parts deliver 220 µH at ±10% tolerance, measured at 1 kHz, ensuring functional circuit compatibility.

Current Capacity: The CDH115NP-221KC provides 660 mA current rating, exceeding the CDH113NP-221KC requirement of 430 mA. This enhanced capacity provides design margin and thermal stability.

DC Resistance Improvement: The CDH115NP-221KC exhibits 530mOhm maximum DCR compared to 900mOhm in the main part. This 41% reduction in series resistance decreases power dissipation and improves overall circuit efficiency.

Footprint Compatibility: Identical lateral dimensions (11.20mm x 11.00mm) ensure PCB layout compatibility. The increased height of 5.20mm versus 3.70mm requires verification of vertical clearance in the target assembly.

Regulatory Compliance: Both parts maintain ROHS3 compliance and MSL rating of 1, satisfying environmental and manufacturing requirements.

Product Availability: The CDH115NP-221KC is active production status with 1046 units in stock, ensuring supply chain continuity compared to the obsolete CDH113NP-221KC.

Temperature Range: The CDH115NP-221KC extends the lower operating limit to -40°C, providing broader environmental coverage than the -30°C minimum of the main part.

Frequently Asked Questions (FAQ)

Q: Can the CDH115NP-221KC directly replace the CDH113NP-221KC in existing designs?

A: Direct replacement is possible when PCB vertical clearance accommodates the increased height of 5.20mm (versus 3.70mm). The identical footprint dimensions and inductance value ensure electrical compatibility. Verify clearance to adjacent components before implementation.

Q: What is the significance of the lower DC resistance in the CDH115NP-221KC?

A: The 530mOhm maximum DCR in the CDH115NP-221KC, compared to 900mOhm in the CDH113NP-221KC, reduces resistive losses by approximately 41%. This results in lower heat generation and improved power efficiency in the circuit application.

Q: Are both parts suitable for the same current applications?

A: The CDH113NP-221KC is rated for 430 mA, while the CDH115NP-221KC supports 660 mA. The substitute part exceeds the original current requirement, making it suitable for applications requiring the original 430 mA specification. Applications requiring higher current benefit from the enhanced rating.

Q: What is the impact of the drum core construction in the CDH115NP-221KC?

A: The CDH115NP-221KC uses drum core wirewound construction with ferrite material, compared to the standard wirewound construction of the CDH113NP-221KC. Both maintain unshielded configuration and identical inductance value at 1 kHz test frequency.

Q: Does the packaging difference affect component selection?

A: The CDH113NP-221KC uses nonstandard packaging, while the CDH115NP-221KC is supplied in Tape & Reel (TR) format. TR packaging is standard for automated assembly processes and improves handling efficiency in production environments.

Q: Are there temperature range considerations for substitution?

A: The CDH115NP-221KC operates from -40°C to 100°C, extending the lower limit by 10°C compared to the CDH113NP-221KC range of -30°C to 100°C. Both parts cover the standard industrial temperature range and maintain ROHS3 compliance across their operating windows.