CDR74NP-101MC Equivalent & Substitute Parts

Part Overview

The CDR74NP-101MC is a 100 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 520 mA continuous current with a maximum DC resistance of 540 mOhm. This component operates across the temperature range of -40°C to 85°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Substiute Parts

CDR74NP-101MC

Sumida America Components Inc.In Stock: 685CDR74NP-101MC Datasheet

Current PartRFQ

CDRH8D38/ANP-101MC

Sumida America Components Inc.In Stock: 1016CDRH8D38/ANP-101MC Datasheet

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SRR7045-101M

Bourns Inc.In Stock: 4878SRR7045-101M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDR74NP-101MC are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 100 µH (exact match required)
• Shielding: Shielded configuration
• Mounting type: Surface Mount
• Current rating: Equal to or greater than 520 mA
• DC resistance: Equal to or lower than 540 mOhm (lower DCR preferred for reduced losses)
• Operating temperature range: Minimum -40°C to 85°C coverage
• RoHS3 compliance and MSL 1 rating

Substitution Logic: The CDR74NP-101MC can be replaced by components that maintain the same inductance value and shielding characteristics while meeting or exceeding the current handling capability and thermal performance requirements. Substitute parts must support surface mount assembly and comply with RoHS3 standards. DC resistance values lower than the original specification are acceptable as they represent improved performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

CDRH8D38/ANP-101MC (Sumida America Components Inc.): This substitute is from the same manufacturer as the original CDR74NP-101MC and represents an active product line alternative. It meets all primary substitution criteria with equivalent inductance (100 µH), shielded configuration, and surface mount compatibility. The current rating of 530 mA exceeds the original 520 mA requirement. The DC resistance of 478.8 mOhm is lower than the original 540 mOhm specification, indicating improved efficiency. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. This part is ROHS3 compliant with MSL 1 rating. The slightly larger footprint (8.00mm x 8.00mm versus 7.70mm x 7.10mm) and reduced height (4.00mm versus 4.85mm) must be verified for PCB layout compatibility.

SRR7045-101M (Bourns Inc.): This substitute provides the highest current rating (1 A) and the lowest DC resistance (300 mOhm Max) among the available options, delivering superior performance characteristics for the 100 µH inductance specification. The shielded drum core wirewound construction maintains electromagnetic isolation. Surface mount compatibility and extended operating temperature range (-40°C to 125°C) are confirmed. ROHS3 compliance and MSL 1 rating are met. The smaller footprint (7.00mm x 7.00mm) and comparable height (4.80mm) provide favorable PCB layout characteristics. Selection of this part is appropriate when maximum current headroom and minimum losses are design priorities.

Frequently Asked Questions (FAQ)

Q: Can the CDR74NP-101MC be directly replaced with CDRH8D38/ANP-101MC? A: Yes. Both parts share the same inductance value (100 µH), shielding type, and surface mount configuration. The CDRH8D38/ANP-101MC meets or exceeds all electrical specifications of the original part. PCB layout verification is required due to dimensional differences: the substitute is 8.00mm x 8.00mm with 4.00mm height versus the original 7.70mm x 7.10mm with 4.85mm height.

Q: What are the advantages of using SRR7045-101M as a substitute? A: The SRR7045-101M provides superior electrical performance with 1 A current rating (versus 520 mA original) and 300 mOhm maximum DC resistance (versus 540 mOhm original). The lower resistance reduces power dissipation and heat generation. The smaller footprint (7.00mm x 7.00mm) may provide PCB layout benefits. Both parts maintain the required 100 µH inductance and shielded configuration.

Q: Are there any thermal operating range limitations when substituting? A: The original CDR74NP-101MC operates from -40°C to 85°C. Both substitute parts extend this range to -40°C to 125°C, providing additional thermal margin. If the application operates only within the original -40°C to 85°C range, both substitutes are fully compatible. Applications requiring operation above 85°C benefit from the extended range of the substitute parts.

Q: How do the physical dimensions affect substitution? A: The three parts have different footprints and heights. The CDRH8D38/ANP-101MC is the largest (8.00mm x 8.00mm, 4.00mm height). The SRR7045-101M is the smallest (7.00mm x 7.00mm, 4.80mm height). The original CDR74NP-101MC measures 7.70mm x 7.10mm with 4.85mm height. PCB layout and component placement clearances must be verified before substitution to ensure no mechanical conflicts with adjacent components or board features.

Q: Do all substitute parts maintain RoHS3 compliance? A: Yes. Both CDRH8D38/ANP-101MC and SRR7045-101M are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's compliance status.

Q: What is the difference between the tolerance specifications? A: The original CDR74NP-101MC has asymmetrical tolerance of -15%, +20%. Both substitute parts specify ±20% tolerance. The substitute parts have tighter lower tolerance limits, which may be beneficial for applications requiring closer inductance accuracy.