CDR74BNP-221KC Equivalent & Substitute Parts

Part Overview

The CDR74BNP-221KC is a 220 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 360 mA continuous current with a maximum DC resistance of 1.18 Ohm. This component operates across a temperature range of -25°C to 80°C and is designed for applications requiring ferrite-core inductance in compact nonstandard packaging.

The CDR74BNP-221KC has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

CDR74BNP-221KC

Sumida America Components Inc.In Stock: 1155CDR74BNP-221KC Datasheet

Current PartRFQ

CDRH74NP-221MC-B

Sumida America Components Inc.In Stock: 6737CDRH74NP-221MC-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDR74BNP-221KC is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Inductance value: 220 µH (primary specification)
• Current rating: minimum 360 mA
• DC resistance: maximum 1.18 Ohm
• Core material: Ferrite
• Shielding: Shielded configuration

Mechanical & Environmental Compatibility:

• Mounting type: Surface Mount
• Operating temperature range: must encompass or exceed -25°C to 80°C
• Moisture sensitivity: MSL 1 or better
• RoHS compliance: ROHS3 Compliant

Frequency Characteristics:

• Self-resonant frequency: 5.4 MHz (reference specification)
• Inductance test frequency: 1 kHz

The CDRH74NP-221MC-B meets all electrical and environmental requirements for direct substitution. While packaging dimensions differ slightly and inductance tolerance is wider (±20% versus ±10%), the electrical performance parameters remain within acceptable operating margins for this component category.

Parameter Comparison

Engineering Selection Recommendations

The CDRH74NP-221MC-B is the qualified substitute for the obsolete CDR74BNP-221KC based on the following engineering criteria:

Electrical Performance: Both inductors deliver identical 220 µH inductance at 1 kHz test frequency with matching 360 mA current ratings. The substitute exhibits marginally lower DC resistance (1.17 Ohm versus 1.18 Ohm maximum), representing improved electrical efficiency. The wider inductance tolerance of the substitute (±20% versus ±10%) must be evaluated against circuit design margins in the target application.

Environmental & Compliance: The CDRH74NP-221MC-B operates across an extended temperature range (-40°C to 100°C), providing superior thermal coverage compared to the main part (-25°C to 80°C). Both components maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Supply & Availability: The substitute part maintains active product status with 6686 units in stock, compared to the obsolete main part. The substitute is supplied in standard Tape & Reel packaging, facilitating automated assembly processes.

Physical Considerations: Dimensional differences exist between the two inductors. The substitute measures 7.30mm × 7.30mm × 4.50mm (height seated), compared to the main part at 7.80mm × 7.00mm × 4.90mm. PCB layout verification is required to confirm mechanical fit within the target application.

Frequently Asked Questions (FAQ)

Q: Can the CDRH74NP-221MC-B directly replace the CDR74BNP-221KC without circuit modification?

A: Electrical substitution is valid based on matching inductance (220 µH), current rating (360 mA), core material (ferrite), and shielding configuration. Physical PCB layout must be verified due to dimensional differences. The wider inductance tolerance (±20%) of the substitute requires confirmation that circuit performance remains within design specifications.

Q: What is the significance of the inductance tolerance difference between these parts?

A: The main part specifies ±10% tolerance, while the substitute allows ±20%. In applications where inductance value directly affects circuit performance (resonant frequency, filter response, impedance matching), the wider tolerance of the substitute may introduce measurable variation. Circuit simulation or tolerance analysis should confirm acceptable performance margins.

Q: Are there thermal performance differences between these inductors?

A: The substitute operates across -40°C to 100°C, exceeding the main part's -25°C to 80°C range. Both components are rated for identical 360 mA continuous current. Thermal performance under load conditions is not specified in the provided parameters and should be evaluated through application-specific testing if thermal margins are critical.

Q: How do the packaging differences affect assembly and supply chain?

A: The main part uses nonstandard packaging, while the substitute is supplied in standard Tape & Reel format. This facilitates automated pick-and-place assembly and improves supply chain compatibility with standard manufacturing equipment. Reel specifications and tape pitch should be confirmed with the supplier for integration into existing assembly processes.

Q: Is the substitute part fully compliant with the same regulatory standards?

A: Both parts are ROHS3 compliant and carry MSL 1 moisture sensitivity rating. The substitute includes REACH Unaffected status. Both share identical ECCN (EAR99) and HTSUS (8504.50.4000) classifications, ensuring equivalent regulatory treatment in procurement and export documentation.