CDR105-181MC Equivalent & Substitute Parts

Part Overview

The CDR105-181MC is a 180 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 600 mA continuous current with a maximum DC resistance of 620 mOhm. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure long-term supply availability for new production and field service applications.

Substiute Parts

CDR105-181MC

Sumida America Components Inc.In Stock: 1104CDR105-181MC Datasheet

Current PartRFQ

CDR105NP-181MC

Sumida America Components Inc.In Stock: 1014CDR105NP-181MC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR105-181MC is based on strict electrical and mechanical parameter matching within the CDR105 series. The substitute part CDR105NP-181MC maintains identical electrical specifications: 180 µH inductance with -15%, +20% tolerance, 600 mA current rating, 620 mOhm maximum DC resistance, shielded construction, and 5.3 MHz self-resonant frequency. Both parts share identical physical dimensions (10.00 mm x 9.20 mm x 5.50 mm maximum height) and nonstandard package classification, confirming mechanical compatibility for PCB layout and assembly processes.

The primary distinction between these parts is product status and compliance certification. The CDR105-181MC is obsolete, while CDR105NP-181MC is active production. The substitute part features an extended operating temperature range (-40°C ~ 100°C versus -25°C ~ 70°C) and RoHS3 compliance, providing enhanced environmental performance and regulatory alignment for new designs.

Parameter Comparison

Engineering Selection Recommendations

The CDR105NP-181MC is the direct active equivalent for the obsolete CDR105-181MC. Selection of the substitute part is based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters are identical, including inductance value, tolerance band, current rating, DC resistance, and self-resonant frequency. The substitute part operates at the same 1 kHz test frequency and maintains shielded construction for electromagnetic isolation.

Mechanical Compatibility: Physical dimensions and mounting characteristics are identical. Both parts are surface mount components with nonstandard package classification and identical footprint dimensions (10.00 mm x 9.20 mm x 5.50 mm maximum height), ensuring direct PCB layout compatibility without redesign.

Product Status and Compliance: The CDR105NP-181MC is in active production status, ensuring long-term availability and supply chain continuity. The substitute part carries RoHS3 compliance certification, meeting current environmental and regulatory requirements for new product designs and manufacturing processes.

Operating Environment: The substitute part features an extended operating temperature range (-40°C ~ 100°C) compared to the main part (-25°C ~ 70°C), providing enhanced performance margin for applications requiring broader thermal operation.

Packaging Consideration: The substitute part is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes. The main part was supplied in bulk format. This packaging difference does not affect electrical or mechanical performance but may require adjustment to procurement and assembly procedures.

Frequently Asked Questions (FAQ)

Q: Are the CDR105-181MC and CDR105NP-181MC electrically interchangeable?

A: Yes. Both parts have identical inductance (180 µH), inductance tolerance (-15%, +20%), current rating (600 mA), DC resistance (620 mOhm maximum), shielding type, and self-resonant frequency (5.3 MHz). They are electrically interchangeable for all circuit applications.

Q: Can the CDR105NP-181MC be used as a direct replacement on existing PCBs designed for the CDR105-181MC?

A: Yes. Both parts have identical physical dimensions (10.00 mm x 9.20 mm x 5.50 mm maximum height) and nonstandard package classification. The footprint and mounting characteristics are identical, allowing direct substitution without PCB redesign.

Q: What is the difference in operating temperature range between these parts?

A: The CDR105-181MC operates from -25°C to 70°C, while the CDR105NP-181MC operates from -40°C to 100°C. The substitute part provides a wider operating temperature envelope, which may be beneficial for applications requiring extended thermal performance.

Q: Does the CDR105NP-181MC meet RoHS compliance requirements?

A: Yes. The CDR105NP-181MC is RoHS3 compliant. The original CDR105-181MC is RoHS non-compliant. For new designs subject to RoHS regulations, the substitute part is required.

Q: What is the difference in packaging between these parts?

A: The CDR105-181MC was supplied in bulk packaging format. The CDR105NP-181MC is supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly. This packaging difference does not affect component performance but may require adjustment to procurement and assembly procedures.

Q: Are there any differences in moisture sensitivity between these parts?

A: No. Both parts have identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Why is the CDR105-181MC classified as obsolete?

A: The CDR105-181MC is no longer in active production. The CDR105NP-181MC is the active production equivalent and should be used for all new designs and ongoing supply requirements.