CD105NP-271KC Equivalent & Substitute Parts

Part Overview

The CD105NP-271KC is a 270 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is designed for applications requiring moderate inductance values with a current rating of 570 mA and a maximum DC resistance of 970 mOhm. The component features a ferrite core construction and operates across the temperature range of -40°C to 100°C. As an active product with ROHS3 compliance and unlimited moisture sensitivity rating, the CD105NP-271KC serves as a reliable solution for power conversion, filtering, and signal conditioning circuits. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and component availability options for engineering teams.

Substiute Parts

CD105NP-271KC

Sumida America Components Inc.In Stock: 1174CD105NP-271KC Datasheet

Current PartRFQ

SDR1006-271KL

Bourns Inc.In Stock: 2597SDR1006-271KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD105NP-271KC is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Inductance value: 270 µH at 1 kHz test frequency
• Inductance tolerance: ±10%
• Current rating: 570 mA minimum
• DC resistance: 970 mOhm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Equivalence Criteria:

• Mounting type: Surface Mount
• Package classification: Nonstandard
• Height seated maximum: 5.80 mm (0.228")
• Footprint compatibility within dimensional tolerance

Compliance Criteria:

• RoHS3 compliance status
• Moisture sensitivity level: 1 (Unlimited)
• ECCN and HTSUS classifications

The substitute part SDR1006-271KL meets all mandatory electrical parameters and maintains mechanical compatibility while offering enhanced performance specifications in saturation current and quality factor.

Parameter Comparison

Engineering Selection Recommendations

CD105NP-271KC Selection: The CD105NP-271KC remains the primary choice when Sumida component qualification is required or when the specific self-resonant frequency of 4.62 MHz is a design requirement. This part maintains active product status with full ROHS3 compliance and unlimited moisture sensitivity rating, suitable for standard industrial and commercial applications.

SDR1006-271KL Selection: The SDR1006-271KL from Bourns Inc. serves as a direct substitute when supply constraints affect CD105NP-271KC availability. This part meets all mandatory electrical specifications and provides additional performance data including saturation current (1 A) and quality factor (12 @ 796 kHz). The extended operating temperature range to 125°C offers enhanced thermal performance. Both components maintain identical RoHS3 compliance and moisture sensitivity classifications, ensuring regulatory equivalence.

Substitution Validity: Both parts are classified as active products with equivalent compliance certifications. The electrical parameters—inductance, tolerance, current rating, and DC resistance—are identical. Mechanical compatibility is confirmed through matching height specifications and surface mount packaging. Selection between these parts depends on manufacturer qualification requirements, supply availability, and application-specific thermal or frequency performance needs.

Frequently Asked Questions (FAQ)

Q: Can SDR1006-271KL directly replace CD105NP-271KC in existing designs?

A: Yes. Both inductors share identical inductance (270 µH), tolerance (±10%), current rating (570 mA), and DC resistance (970 mOhm maximum). Surface mount packaging and height specifications are equivalent. No circuit redesign is required for direct substitution.

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

A: The primary differences are manufacturer origin (Sumida versus Bourns) and specified performance parameters. SDR1006-271KL provides documented saturation current (1 A) and quality factor (12 @ 796 kHz), while CD105NP-271KC does not specify these values. SDR1006-271KL operates to 125°C versus 100°C for CD105NP-271KC. Self-resonant frequency differs: 4.62 MHz (CD105NP-271KC) versus 3.5 MHz (SDR1006-271KL).

Q: Are there any footprint compatibility concerns?

A: No. Both components are nonstandard package surface mount inductors with identical seated height of 5.80 mm. Dimensional compatibility is confirmed. Verify PCB layout against specific length and width measurements if space constraints exist.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CD105NP-271KC and SDR1006-271KL are ROHS3 compliant with moisture sensitivity level 1 (unlimited). ECCN and HTSUS classifications are identical. Regulatory equivalence is confirmed for commercial and industrial applications.

Q: Which part should be selected for high-temperature applications?

A: SDR1006-271KL is suitable for applications requiring operation to 125°C. CD105NP-271KC is rated to 100°C maximum. Application thermal requirements determine the appropriate selection.

Q: Is there a performance difference in frequency response?

A: Self-resonant frequency differs between parts: CD105NP-271KC operates at 4.62 MHz while SDR1006-271KL operates at 3.5 MHz. Applications sensitive to high-frequency behavior should account for this specification difference. Both parts are tested at 1 kHz for inductance measurement.