CDR105-271MC Equivalent & Substitute Parts

Part Overview

The CDR105-271MC is a 270 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 490 mA continuous current with a maximum DC resistance of 780 mOhm. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure long-term supply chain reliability. The part operates across a temperature range of -25°C to 70°C and is mounted in a nonstandard surface mount package measuring 10.00mm × 9.20mm × 5.50mm (max height).

Substiute Parts

CDR105-271MC

Sumida America Components Inc.In Stock: 900CDR105-271MC Datasheet

Current PartRFQ

CDR105NP-271MC

Sumida America Components Inc.In Stock: 872CDR105NP-271MC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR105-271MC is determined by strict equivalence across the following electrical and mechanical parameters:

• Inductance Value: 270 µH (exact match required)
• Inductance Tolerance: -15%, +20% (must accommodate or exceed this specification)
• Current Rating: 490 mA minimum (equal or greater)
• DC Resistance: 780 mOhm maximum (equal or lower)
• Shielding Type: Shielded (electromagnetic containment requirement)
• Self Resonant Frequency: 4.6 MHz (frequency response characteristic)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Package Dimensions: 10.00mm L × 9.20mm W × 5.50mm H max (physical fit requirement)
• Series Family: CDR105 (design lineage and performance class)

The CDR105NP-271MC qualifies as a direct substitute based on identical electrical specifications and mechanical form factor. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The CDR105NP-271MC is the direct active equivalent to the obsolete CDR105-271MC. Selection of the substitute part is justified on the following engineering and compliance grounds:

Electrical Equivalence: All critical electrical parameters—inductance, tolerance, current rating, DC resistance, shielding, and self-resonant frequency—are identical between the main part and substitute. This ensures functional interchangeability in circuit operation.

Mechanical Compatibility: Physical dimensions and surface mount form factor are identical, permitting direct PCB layout substitution without redesign.

Enhanced Operating Range: The CDR105NP-271MC operates across -40°C to 100°C, which encompasses and exceeds the original part's -25°C to 70°C range. This provides improved thermal margin for applications requiring extended temperature performance.

Regulatory Compliance: The CDR105NP-271MC is ROHS3 compliant, addressing modern regulatory requirements. The original CDR105-271MC is RoHS non-compliant, making the substitute necessary for new designs and procurement in regulated markets.

Supply Chain Continuity: With 802 units in active inventory and active product status, the CDR105NP-271MC ensures reliable long-term availability, whereas the obsolete CDR105-271MC presents supply risk.

Packaging Consideration: The substitute is supplied in Tape & Reel (TR) format, standard for automated assembly operations. If bulk packaging is required, verify packaging availability with the supplier.

Frequently Asked Questions (FAQ)

Q: Can the CDR105NP-271MC be used as a direct replacement for the CDR105-271MC on existing PCBs?

A: Yes. The CDR105NP-271MC is electrically and mechanically identical to the CDR105-271MC. All critical parameters—inductance, current rating, DC resistance, shielding, and physical dimensions—match exactly. No circuit redesign or PCB layout modification is required.

Q: What is the difference between the CDR105-271MC and CDR105NP-271MC?

A: The primary differences are product status, compliance certification, operating temperature range, and packaging format. The CDR105-271MC is obsolete and RoHS non-compliant with a -25°C to 70°C operating range. The CDR105NP-271MC is active, ROHS3 compliant, operates from -40°C to 100°C, and is supplied in Tape & Reel format. All electrical specifications are identical.

Q: Why is the operating temperature range different if the parts are equivalent?

A: The CDR105NP-271MC represents an updated version of the same design with improved thermal performance characteristics. The extended -40°C to 100°C range does not indicate reduced performance at the original -25°C to 70°C specification; rather, it demonstrates enhanced capability. For applications operating within the original -25°C to 70°C window, both parts perform identically.

Q: Is the Tape & Reel packaging compatible with my assembly process?

A: Tape & Reel (TR) packaging is the standard format for automated surface mount assembly. If your manufacturing process requires bulk or alternative packaging, contact the supplier to confirm packaging options. The electrical and mechanical specifications remain unchanged regardless of packaging format.

Q: Are there any circuit performance differences between these parts?

A: No. The inductance value, tolerance, current rating, DC resistance, shielding effectiveness, and self-resonant frequency are identical. Circuit performance will be equivalent.

Q: Why should I transition from the CDR105-271MC to the CDR105NP-271MC?

A: The CDR105-271MC is obsolete, creating supply risk and potential unavailability. The CDR105NP-271MC is an active product with confirmed inventory and long-term availability. Additionally, ROHS3 compliance of the substitute aligns with current regulatory requirements for electronic components in most markets.

Q: Can I mix CDR105-271MC and CDR105NP-271MC parts in the same production batch?

A: Yes, from an electrical and mechanical standpoint, both parts are functionally equivalent and can be used interchangeably. However, verify compliance and regulatory requirements for your specific application and market, as the original part is RoHS non-compliant.