CD1-221-R Equivalent & Substitute Parts Reference

Part Overview

The CD1-221-R is a 220 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 860 mA continuous current with a maximum DC resistance of 756 mOhm and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity. Substitute parts must maintain the 220 µH inductance specification, shielded ferrite core construction, and surface mount package compatibility while accommodating variations in current ratings and operating temperature ranges.

Substiute Parts

CD1-221-R

Eaton - Electronics DivisionIn Stock: 1119CD1-221-R Datasheet

Current PartRFQ

DR1040-221-R

Eaton - Electronics DivisionIn Stock: 1177DR1040-221-R Datasheet

DirectRFQ

CDRH104RNP-221NC

Sumida America Components Inc.In Stock: 2897CDRH104RNP-221NC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD1-221-R is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

• Inductance value: 220 µH
• Inductance tolerance: ±30%
• Core material: Ferrite
• Shielding: Shielded configuration
• Mounting type: Surface Mount
• Test frequency: 100 kHz

Performance Parameters - Substitute Must Meet or Exceed:

• Current rating: Substitute must support 860 mA minimum continuous current
• Saturation current (Isat): Substitute must support 920 mA minimum
• DC resistance (DCR): Substitute must not exceed 756 mOhm maximum

Operating Conditions - Substitute Must Cover or Exceed:

• Temperature range: Substitute operating temperature must encompass or extend the -40°C to 85°C range

Physical Compatibility:

• Package dimensions must be compatible with the original 10.50 x 10.40 x 4.00 mm footprint within acceptable tolerance

Two substitute parts meet these criteria: DR1040-221-R (Eaton - Electronics Division, Active status) and CDRH104RNP-221NC (Sumida America Components Inc., Active status).

Parameter Comparison

Engineering Selection Recommendations

DR1040-221-R (Eaton - Electronics Division):

This part is classified as a direct manufacturer substitute. It maintains identical inductance, tolerance, core material, shielding, and mounting specifications. The DC resistance is improved at 640 mOhm maximum, which is superior to the original 756 mOhm specification. The operating temperature range extends to 125°C, exceeding the original -40°C to 85°C range. However, the continuous current rating is 700 mA, which is 160 mA below the original 860 mA specification. The saturation current remains at 920 mA. Physical dimensions are nearly identical (10.50 x 10.30 mm versus 10.50 x 10.40 mm). The part is Active status with ROHS3 compliance and Tape & Reel packaging. Selection of this part is appropriate when the application circuit can operate within the 700 mA continuous current limit.

CDRH104RNP-221NC (Sumida America Components Inc.):

This part is classified as a similar manufacturer substitute. It maintains identical inductance, tolerance, core material, shielding, and mounting specifications. The DC resistance matches the original at 756 mOhm maximum. The operating temperature range extends to 100°C, exceeding the original -40°C to 85°C range. The continuous current rating is 700 mA, which is 160 mA below the original 860 mA specification. The saturation current remains at 920 mA. Physical dimensions are slightly smaller (10.20 x 10.00 mm versus 10.50 x 10.40 mm), but height remains at 4.00 mm. The part is Active status with ROHS3 compliance and Tape & Reel packaging. Selection of this part is appropriate when the application circuit can operate within the 700 mA continuous current limit and when cross-manufacturer sourcing is acceptable.

Selection Criteria Summary:

Both substitute parts are suitable for applications where continuous current requirements do not exceed 700 mA. If the application requires the full 860 mA continuous current rating of the original CD1-221-R, neither substitute part meets this specification. The DR1040-221-R offers the advantage of remaining within the same manufacturer family (Eaton). The CDRH104RNP-221NC offers the advantage of improved DC resistance characteristics and extended temperature range to 100°C. Both parts provide ROHS3 compliance and active product status, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can DR1040-221-R be used as a direct replacement for CD1-221-R in all applications?

A: DR1040-221-R is a direct manufacturer substitute from Eaton - Electronics Division with identical inductance, tolerance, core material, and shielding. However, the continuous current rating is 700 mA versus the original 860 mA. Substitution is valid only if the application circuit operates within the 700 mA continuous current limit. The improved DC resistance (640 mOhm versus 756 mOhm) and extended temperature range (-40°C to 125°C) are additional benefits.

Q: What is the difference between DR1040-221-R and CDRH104RNP-221NC?

A: Both parts share identical inductance (220 µH), tolerance (±30%), core material (Ferrite), shielding, and mounting type. Key differences are: DR1040-221-R is manufactured by Eaton with 640 mOhm DCR and 125°C maximum temperature; CDRH104RNP-221NC is manufactured by Sumida with 756 mOhm DCR and 100°C maximum temperature. Both have 700 mA continuous current ratings. Physical dimensions differ slightly but remain compatible with the original footprint.

Q: Why do both substitute parts have a lower current rating (700 mA) than the original (860 mA)?

A: The substitute parts are designed with different core and winding configurations that result in a 700 mA continuous current rating while maintaining the 220 µH inductance specification. This is a design trade-off inherent to these alternative components. Applications requiring 860 mA continuous current cannot use these substitutes.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both DR1040-221-R and CDRH104RNP-221NC are ROHS3 compliant, meeting current environmental and regulatory requirements. The original CD1-221-R does not specify RoHS status.

Q: What are the physical compatibility considerations?

A: The original CD1-221-R measures 10.50 x 10.40 x 4.00 mm. DR1040-221-R measures 10.50 x 10.30 x 4.00 mm (0.10 mm narrower). CDRH104RNP-221NC measures 10.20 x 10.00 x 4.00 mm (0.30 mm shorter and 0.40 mm narrower). All three parts maintain the same 4.00 mm height. These dimensional variations are typically within acceptable PCB layout tolerances for surface mount components.

Q: Can I use CDRH104RNP-221NC if I need cross-manufacturer sourcing?

A: Yes. CDRH104RNP-221NC from Sumida America Components Inc. meets all mandatory electrical specifications (220 µH, ±30% tolerance, Ferrite core, Shielded, Surface Mount). It provides an alternative source when Eaton parts are unavailable, subject to the 700 mA continuous current limitation and the slightly reduced operating temperature range to 100°C.

Q: What is the saturation current specification and why is it important?

A: All three parts (CD1-221-R, DR1040-221-R, and CDRH104RNP-221NC) have a saturation current (Isat) of 920 mA. This represents the current level at which the inductor begins to saturate and inductance degrades. The saturation current must not be exceeded in the application circuit to maintain proper inductor performance.

Q: Are there packaging differences between the substitute parts?

A: The original CD1-221-R does not specify packaging format. Both substitute parts are supplied in Tape & Reel (TR) packaging, which is standard for high-volume surface mount component distribution and automated assembly processes.