CDRH74-221MC Equivalent & Substitute Parts

Part Overview

The CDRH74-221MC 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 1.17 Ohm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The part operates across a temperature range of -40°C to 100°C and is mounted on nonstandard package geometry measuring 7.30mm × 7.30mm × 4.50mm (seated height).

Due to its obsolete status, direct replacement with active production equivalents is required for new designs and inventory replenishment. Substitute parts must maintain the 220 µH inductance specification, ±20% tolerance, shielded construction, and surface mount compatibility while meeting current electrical requirements.

Substiute Parts

CDRH74-221MC

Sumida America Components Inc.In Stock: 820CDRH74-221MC Datasheet

Current PartRFQ

CDRH74NP-221MC-B

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

DirectRFQ

DR74-221-R

Eaton - Electronics DivisionIn Stock: 1965DR74-221-R Datasheet

SimilarRFQ

P1167.224NLT

Pulse ElectronicsIn Stock: 4977P1167.224NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the CDRH74-221MC is based on strict electrical and mechanical parameter matching within the surface mount inductor category. The following criteria determine substitution eligibility:

Primary Matching Criteria (Non-Negotiable):

• Inductance value: 220 µH ±20% tolerance
• Shielded construction for electromagnetic interference mitigation
• Surface mount package configuration
• Current rating equal to or exceeding 360 mA
• DC resistance not exceeding 1.17 Ohm maximum
• Operating temperature range encompassing -40°C to 100°C minimum

Secondary Compatibility Factors:

• Ferrite core material (preferred for consistency)
• Nonstandard package geometry compatibility with PCB layout (7.30mm × 7.30mm footprint)
• Tape & Reel packaging for automated assembly
• RoHS3 compliance status (preferred for new designs)

Substitute parts are classified into two categories: direct equivalents (identical electrical specifications) and similar alternatives (meeting all critical parameters with acceptable variations in secondary characteristics).

Parameter Comparison

Engineering Selection Recommendations

CDRH74NP-221MC-B (Direct Equivalent - Recommended Primary Choice)

The CDRH74NP-221MC-B is the direct functional equivalent of the obsolete CDRH74-221MC. Both parts are manufactured by Sumida America Components Inc. and share identical electrical specifications: 220 µH inductance, ±20% tolerance, 360 mA current rating, 1.17 Ohm maximum DC resistance, and matching package geometry (7.30mm × 7.30mm × 4.50mm). The CDRH74NP-221MC-B is currently in active production status with 6686 units in stock. This part achieves RoHS3 compliance, addressing regulatory requirements for new designs. The Tape & Reel packaging format supports automated assembly processes. Selection of this part eliminates any electrical or mechanical compatibility concerns and provides the most direct replacement path.

DR74-221-R (Similar Alternative - Secondary Choice)

The DR74-221-R manufactured by Eaton - Electronics Division meets all critical substitution parameters with enhanced electrical performance characteristics. It maintains the 220 µH inductance and ±20% tolerance specification. The current rating of 560 mA exceeds the 360 mA requirement, providing additional design margin. The DC resistance of 907 mOhm is lower than the 1.17 Ohm maximum, resulting in reduced power dissipation. The operating temperature range extends to -40°C ~ 125°C, exceeding the minimum -40°C ~ 100°C requirement. Package geometry measures 7.60mm × 7.60mm × 4.35mm, representing a minor footprint increase that may require PCB layout verification. This part is RoHS3 compliant and available in Tape & Reel packaging with 1900 units in stock.

P1167.224NLT (Similar Alternative - Tertiary Choice)

The P1167.224NLT manufactured by Pulse Electronics satisfies all critical electrical requirements with 220 µH inductance, ±20% tolerance, 430 mA current rating, and 930 mOhm maximum DC resistance. The operating temperature range of -40°C ~ 130°C exceeds specification requirements. Package geometry measures 7.54mm × 7.54mm × 4.50mm, representing a minor footprint variation requiring PCB layout assessment. This part is RoHS3 compliant and available in Tape & Reel packaging with 4920 units in stock. Core material is not specified in available documentation.

Selection Criteria Summary:

For direct replacement in existing designs with established PCB layouts, select CDRH74NP-221MC-B. For new designs requiring enhanced electrical performance and extended temperature operation, evaluate DR74-221-R or P1167.224NLT based on specific PCB footprint constraints and thermal requirements. All three substitute parts are RoHS3 compliant and support automated assembly processes.

Frequently Asked Questions (FAQ)

Q1: Can CDRH74NP-221MC-B be used as a direct drop-in replacement for CDRH74-221MC?

A: Yes. The CDRH74NP-221MC-B is electrically and mechanically identical to the CDRH74-221MC. Both parts share the same inductance (220 µH ±20%), current rating (360 mA), DC resistance (1.17 Ohm maximum), package geometry (7.30mm × 7.30mm × 4.50mm), and operating temperature range (-40°C ~ 100°C). The primary difference is product status: CDRH74NP-221MC-B is active production while CDRH74-221MC is obsolete. No circuit modifications or PCB layout changes are required.

Q2: What are the key differences between the direct equivalent and similar alternatives?

A: The direct equivalent (CDRH74NP-221MC-B) maintains identical electrical specifications to the original part. Similar alternatives (DR74-221-R and P1167.224NLT) exceed the original specifications in current rating and DC resistance performance while maintaining the 220 µH inductance requirement. Package geometry varies slightly among alternatives, requiring PCB layout verification. All three substitute parts meet the critical parameters: 220 µH inductance, shielded construction, surface mount configuration, and operating temperature range encompassing -40°C to 100°C minimum.

Q3: Are there PCB layout considerations when substituting with DR74-221-R or P1167.224NLT?

A: Yes. The original CDRH74-221MC and direct equivalent CDRH74NP-221MC-B both measure 7.30mm × 7.30mm. The DR74-221-R measures 7.60mm × 7.60mm, and the P1167.224NLT measures 7.54mm × 7.54mm. These minor footprint increases may require PCB layout verification to confirm adequate clearance from adjacent components and traces. Height dimensions are comparable across all parts (4.35mm to 4.50mm seated height), presenting no vertical clearance issues.

Q4: What is the significance of RoHS compliance status in part selection?

A: The original CDRH74-221MC is RoHS non-compliant. All three substitute parts (CDRH74NP-221MC-B, DR74-221-R, and P1167.224NLT) are RoHS3 compliant. For new product designs and applications subject to RoHS regulations, selection of RoHS3 compliant parts is mandatory. For legacy product maintenance where RoHS compliance is not required, all four parts remain functionally equivalent.

Q5: How do DC resistance differences affect circuit performance?

A: The original CDRH74-221MC specifies 1.17 Ohm maximum DC resistance. The DR74-221-R and P1167.224NLT both feature lower DC resistance (907 mOhm and 930 mOhm respectively), resulting in reduced power dissipation and improved efficiency. Lower DC resistance generates less heat during operation. For applications where thermal management is critical, the lower resistance alternatives provide performance advantages. For applications where the original 1.17 Ohm specification is adequate, all substitute parts remain compatible.

Q6: What packaging format is recommended for automated assembly?

A: All three substitute parts are available in Tape & Reel (TR) packaging format, which is standard for automated surface mount assembly processes. The original CDRH74-221MC packaging format is not specified. Tape & Reel packaging ensures compatibility with pick-and-place equipment and automated soldering processes used in modern manufacturing environments.

Q7: Are there current rating considerations for circuit design?

A: The original CDRH74-221MC is rated for 360 mA continuous current. The DR74-221-R supports 560 mA, and the P1167.224NLT supports 430 mA. If the circuit design operates at or near the 360 mA specification, the direct equivalent CDRH74NP-221MC-B maintains identical current handling. For circuits requiring additional current margin or future design expansion, the higher-rated alternatives provide additional design flexibility. All parts maintain the 220 µH inductance across their rated current ranges.

Q8: Which substitute part should be selected for new product designs?

A: For new designs, the CDRH74NP-221MC-B is the recommended primary choice due to identical electrical specifications and RoHS3 compliance. If enhanced electrical performance is desired, evaluate DR74-221-R or P1167.224NLT based on specific thermal requirements and PCB layout constraints. All three parts are in active production with adequate inventory availability and support automated assembly processes.