CDR125-181MC Equivalent & Substitute Parts

Part Overview

The CDR125-181MC is a 180 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 770 mA continuous current with a maximum DC resistance of 480 mOhm. This component is classified as obsolete, indicating that direct procurement from original inventory may become limited. Identifying qualified substitute parts ensures design continuity and supply chain reliability for applications requiring this inductance value and current rating specification.

Substiute Parts

CDR125-181MC

Sumida America Components Inc.In Stock: 1122CDR125-181MC Datasheet

Current PartRFQ

CDR125NP-181MC

Sumida America Components Inc.In Stock: 1129CDR125NP-181MC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR125-181MC is determined by strict equivalence across electrical and mechanical parameters. The following criteria establish substitution validity:

Electrical Parameters (Must Match):

• Inductance: 180 µH
• Current Rating: 770 mA minimum
• DC Resistance: 480 mOhm maximum
• Inductance Tolerance: -15%, +20%
• Shielding: Shielded configuration required

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: Nonstandard
• Physical Dimensions: 0.496" L x 0.457" W (12.60mm x 11.60mm)
• Height - Seated (Max): 0.232" (5.90mm)

Secondary Parameters (Must Not Degrade):

• Frequency - Self Resonant: 5.1 MHz or higher
• Moisture Sensitivity Level: 1 (Unlimited) or equivalent
• Operating Temperature Range: Must support application requirements

The CDR125NP-181MC qualifies as a direct substitute based on complete alignment with all critical electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The CDR125NP-181MC is a direct electrical and mechanical equivalent to the CDR125-181MC. Selection between these parts is determined by the following factors:

Product Status Consideration: The CDR125-181MC is classified as obsolete. The CDR125NP-181MC is active and maintains full manufacturing support. For new designs or long-term production requirements, the CDR125NP-181MC is the appropriate selection.

Compliance and Certification: The CDR125NP-181MC achieves ROHS3 compliance, whereas the CDR125-181MC is RoHS non-compliant. Applications subject to RoHS regulations or customer requirements mandating RoHS compliance must use the CDR125NP-181MC.

Operating Temperature Range: The CDR125NP-181MC supports -40°C ~ 100°C, exceeding the -25°C ~ 70°C range of the CDR125-181MC. Applications requiring extended temperature operation benefit from the substitute part's broader thermal specification.

Packaging: The CDR125NP-181MC is supplied in Tape & Reel (TR) format, providing standard automated assembly compatibility. The CDR125-181MC packaging specification is not detailed. For high-volume manufacturing, the CDR125NP-181MC offers supply chain advantages.

Inventory and Availability: Both parts maintain current stock. The CDR125NP-181MC, as an active product, offers superior long-term availability assurance.

Frequently Asked Questions (FAQ)

Q: Can the CDR125NP-181MC replace the CDR125-181MC in existing designs?

A: Yes. The CDR125NP-181MC is electrically and mechanically identical to the CDR125-181MC across all critical parameters: inductance (180 µH), current rating (770 mA), DC resistance (480 mOhm maximum), tolerance (-15%, +20%), shielding, physical dimensions (0.496" L x 0.457" W, 5.90mm height), and self-resonant frequency (5.1 MHz). Direct substitution is valid without circuit modification.

Q: What are the key differences between these two parts?

A: The primary differences are product status, compliance certification, and operating temperature range. The CDR125-181MC is obsolete and RoHS non-compliant with a -25°C ~ 70°C operating range. The CDR125NP-181MC is active, ROHS3 compliant, and supports -40°C ~ 100°C operation. The substitute also offers Tape & Reel packaging for automated assembly.

Q: Are there any electrical performance differences?

A: No. Both parts are specified identically for inductance, current rating, DC resistance, tolerance, shielding, and self-resonant frequency. Electrical performance is equivalent.

Q: Does the CDR125NP-181MC fit the same PCB footprint?

A: Yes. Both parts share identical physical dimensions: 0.496" L x 0.457" W (12.60mm x 11.60mm) and maximum seated height of 0.232" (5.90mm). PCB layout and assembly tooling require no modification.

Q: Which part should be specified for new designs?

A: The CDR125NP-181MC should be specified for new designs. It is an active product with full manufacturing support, offers RoHS3 compliance, supports extended operating temperature range, and provides standard Tape & Reel packaging for production efficiency.

Q: Is the CDR125-181MC still available for purchase?

A: The CDR125-181MC is classified as obsolete. While current inventory exists (1016 Pcs reported), long-term availability is not assured. The CDR125NP-181MC (1056 Pcs in stock) is the recommended alternative for ongoing supply security.

Q: What is the moisture sensitivity level for both parts?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply.

Q: Can these parts be used interchangeably in automated assembly?

A: Yes, with the advantage favoring the CDR125NP-181MC. The substitute is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly. The CDR125-181MC packaging format is not specified, potentially requiring manual handling or custom reel preparation.