CDH74NP-221JC Equivalent & Substitute Parts

Part Overview

The CDH74NP-221JC is a 220 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 550 mA continuous current with a maximum DC resistance of 1.08 Ohm and operates across the temperature range of -40°C to 100°C. The part is Active in product status and RoHS3 compliant, making it suitable for applications requiring fixed inductance in compact form factors. Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching package specifications are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

CDH74NP-221JC

Sumida America Components Inc.In Stock: 756CDH74NP-221JC Datasheet

Current PartRFQ

SDR7045-221K

Bourns Inc.In Stock: 1302SDR7045-221K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH74NP-221JC is based on the following critical parameters that must align across candidate parts:

Primary Matching Criteria:

• Inductance value of 220 µH
• Ferrite drum core construction with unshielded configuration
• Surface mount package type
• Current rating capability of 500 mA or greater
• DC resistance within acceptable operating limits
• RoHS3 compliance
• Moisture Sensitivity Level 1

The SDR7045-221K from Bourns Inc. meets these substitution criteria. Both parts share identical inductance specifications, ferrite core materials, unshielded topology, and surface mount configuration. The SDR7045-221K provides a current rating of 500 mA, which is within 91% of the main part's 550 mA rating. DC resistance of 930 mOhm is lower than the main part's 1.08 Ohm maximum, representing improved electrical performance. Both parts maintain RoHS3 compliance and MSL Level 1 ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the CDH74NP-221JC and SDR7045-221K are Active products with current manufacturing status and full RoHS3 compliance. Selection between these parts is determined by application-specific current requirements and tolerance specifications.

The CDH74NP-221JC is appropriate for applications requiring the full 550 mA current rating and tighter inductance tolerance of ±5%. The lower DC resistance of 1.08 Ohm maximum supports applications with specific impedance requirements.

The SDR7045-221K is suitable for applications with maximum current demands of 500 mA or less. This part offers superior DC resistance performance at 930 mOhm maximum and an extended operating temperature range to 125°C. The ±10% inductance tolerance is acceptable for general-purpose filtering and energy storage applications where tighter tolerance is not required.

Both parts are available in Tape & Reel packaging for automated assembly and maintain unlimited moisture sensitivity ratings, eliminating special storage or handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the SDR7045-221K replace the CDH74NP-221JC in all applications?

A: The SDR7045-221K is suitable for applications where the maximum continuous current requirement does not exceed 500 mA. If your circuit requires the full 550 mA rating of the CDH74NP-221JC, the substitute part may not be appropriate. Both parts share identical 220 µH inductance and ferrite unshielded drum core construction, ensuring functional compatibility in inductance-dependent circuits.

Q: What is the difference in DC resistance between these parts?

A: The CDH74NP-221JC has a maximum DC resistance of 1.08 Ohm, while the SDR7045-221K has a maximum of 930 mOhm. The SDR7045-221K exhibits lower resistance, which reduces power dissipation and heat generation in the inductor. Applications sensitive to resistive losses will benefit from the SDR7045-221K specification.

Q: Are there tolerance differences I should consider?

A: Yes. The CDH74NP-221JC specifies ±5% inductance tolerance, while the SDR7045-221K specifies ±10%. For circuits requiring precise inductance values, the tighter tolerance of the CDH74NP-221JC is preferable. For general filtering, energy storage, and impedance matching applications, the ±10% tolerance of the SDR7045-221K is typically acceptable.

Q: Do both parts support the same temperature range?

A: The CDH74NP-221JC operates from -40°C to 100°C, while the SDR7045-221K extends to -40°C to 125°C. If your application requires operation above 100°C, the SDR7045-221K provides additional thermal margin.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the CDH74NP-221JC and SDR7045-221K are RoHS3 compliant and carry Moisture Sensitivity Level 1 ratings, eliminating special handling or storage requirements for either part.

Q: What are the physical size differences?

A: The CDH74NP-221JC measures 0.315" L x 0.287" W x 0.205" H (8.00mm x 7.30mm x 5.20mm). The SDR7045-221K measures 0.276" L x 0.276" W x 0.189" H (7.00mm x 7.00mm x 4.80mm). The SDR7045-221K is slightly smaller in all dimensions, which may provide layout advantages in space-constrained designs.