CDR125-821MC Equivalent & Substitute Parts

Part Overview

The CDR125-821MC is a 820 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 360 mA maximum current with 2Ohm maximum DC resistance. This component is classified as obsolete product status. Due to its obsolete designation, locating equivalent or substitute parts from active product lines is necessary for ongoing design support, production continuity, and long-term component availability assurance.

Substiute Parts

CDR125-821MC

Sumida America Components Inc.In Stock: 986CDR125-821MC Datasheet

Current PartRFQ

CDR125NP-821MC

Sumida America Components Inc.In Stock: 1186CDR125NP-821MC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDR125-821MC is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Inductance value: 820 µH
• Inductance tolerance: -15%, +20%
• Current rating: 360 mA minimum
• DC resistance: 2Ohm maximum
• Self-resonant frequency: 2.42MHz
• Shielding type: Shielded

Mechanical Parameters (Must Match):

• Mounting type: Surface Mount
• Physical dimensions: 0.496" L x 0.457" W (12.60mm x 11.60mm)
• Maximum seated height: 0.232" (5.90mm)
• Test frequency: 1 kHz

Environmental Parameters (Must Match or Exceed):

• Moisture sensitivity level: 1 (Unlimited)

The CDR125NP-821MC qualifies as a direct substitute based on identical electrical and mechanical specifications across all critical parameters.

Parameter Comparison

Engineering Selection Recommendations

The CDR125NP-821MC is the direct electrical and mechanical equivalent of the CDR125-821MC. Selection between these parts is determined by the following factors:

Product Status Consideration: The CDR125-821MC carries obsolete product status, indicating discontinued manufacturing and limited future availability. The CDR125NP-821MC maintains active product status within the same manufacturer series, ensuring ongoing supply chain access and production support.

Compliance Status: The CDR125NP-821MC achieves ROHS3 compliance, whereas the CDR125-821MC is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the CDR125NP-821MC is the appropriate selection.

Operating Temperature Range: The CDR125NP-821MC provides an extended operating temperature range of -40°C ~ 100°C compared to the CDR125-821MC range of -25°C ~ 70°C. Applications requiring operation at temperature extremes benefit from the substitute part's expanded thermal envelope.

Packaging Format: The CDR125-821MC is supplied in bulk packaging, while the CDR125NP-821MC is supplied in Tape & Reel (TR) format. Packaging selection depends on production volume requirements and assembly line automation compatibility.

Electrical and Mechanical Equivalence: All critical electrical parameters (inductance, tolerance, current rating, DC resistance, self-resonant frequency, shielding) and mechanical parameters (dimensions, height, mounting type) are identical between both parts, confirming direct substitution capability.

Frequently Asked Questions (FAQ)

Q: Can CDR125NP-821MC replace CDR125-821MC in existing designs?

A: Yes. The CDR125NP-821MC is electrically and mechanically equivalent to the CDR125-821MC across all critical parameters: 820 µH inductance, 360 mA current rating, 2Ohm maximum DC resistance, shielded construction, identical physical dimensions (12.60mm x 11.60mm x 5.90mm maximum height), and surface mount configuration. Direct substitution is supported without circuit redesign.

Q: What is the primary reason to transition from CDR125-821MC to CDR125NP-821MC?

A: The CDR125-821MC is classified as obsolete product, indicating discontinued manufacturing. The CDR125NP-821MC maintains active product status within the same manufacturer series, ensuring long-term component availability, production continuity, and supply chain reliability.

Q: Are there compliance differences between these parts?

A: Yes. The CDR125NP-821MC is ROHS3 compliant, while the CDR125-821MC is RoHS non-compliant. Applications subject to RoHS regulatory requirements must use the CDR125NP-821MC.

Q: Do these parts have different operating temperature ranges?

A: Yes. The CDR125-821MC operates from -25°C to 70°C, while the CDR125NP-821MC operates from -40°C to 100°C. The substitute part provides an extended thermal operating envelope suitable for wider temperature applications.

Q: What packaging formats are available?

A: The CDR125-821MC is supplied in bulk packaging. The CDR125NP-821MC is supplied in Tape & Reel (TR) format, which is standard for automated assembly line processing.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical dimensions: 0.496" length x 0.457" width (12.60mm x 11.60mm) with maximum seated height of 0.232" (5.90mm). PCB footprint and assembly clearances are identical.

Q: Is the inductance tolerance the same?

A: Yes. Both parts maintain -15%, +20% inductance tolerance at 1 kHz test frequency.

Q: Are both parts shielded inductors?

A: Yes. Both CDR125-821MC and CDR125NP-821MC are shielded inductors with identical shielding characteristics and self-resonant frequency of 2.42MHz.