CD105NP-331KC Equivalent & Substitute Parts Reference

Part Overview

The CD105NP-331KC is a 330 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This ferrite core component is rated for 520 mA continuous current with a maximum DC resistance of 1.15 Ohm and operates across the temperature range of -40°C to 100°C. The part is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, or extended operating temperature ranges while maintaining electrical and mechanical compatibility.

Substiute Parts

CD105NP-331KC

Sumida America Components Inc.In Stock: 827CD105NP-331KC Datasheet

Current PartRFQ

SDR1006-331KL

Bourns Inc.In Stock: 1471SDR1006-331KL Datasheet

DirectRFQ

744776233

Würth ElektronikIn Stock: 1197744776233 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD105NP-331KC are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH ±10% tolerance
• Current rating: 520 mA minimum
• DC resistance: 1.15 Ohm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Package classification: Nonstandard
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant

Substitution Categories:

Direct Substitute: SDR1006-331KL (Bourns Inc.) meets all primary electrical parameters with identical inductance, current rating, and DC resistance specifications. This part qualifies as a direct substitute with extended operating temperature range (-40°C to 125°C) and higher saturation current (850 mA).

Similar Substitute: 744776233 (Würth Elektronik) meets all primary electrical parameters with identical inductance, current rating, and DC resistance specifications. This part maintains the same physical footprint as the main part and qualifies as a similar substitute with extended operating temperature range (-40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

CD105NP-331KC (Sumida America Components Inc.): Primary choice for applications requiring the specified -40°C to 100°C operating temperature range. Active product status with ROHS3 compliance and unlimited moisture sensitivity rating ensures standard supply chain availability and regulatory compliance.

SDR1006-331KL (Bourns Inc.): Direct substitute suitable for applications requiring extended operating temperature capability (-40°C to 125°C). Higher saturation current rating (850 mA) provides additional design margin. Drum core wirewound construction type differs from the main part but maintains electrical equivalence. ROHS3 compliant with REACH unaffected status. Slight dimensional variation (9.80mm x 9.80mm vs. 10.00mm x 9.00mm) requires PCB layout verification.

744776233 (Würth Elektronik): Similar substitute with identical physical footprint to the main part (10.00mm L x 9.00mm W). Extended operating temperature range (-40°C to 125°C) and REACH unaffected status. Drum core wirewound construction type. Saturation current rating (590 mA) is lower than the direct substitute but exceeds the main part's 520 mA rating. Seated height is marginally higher (5.90mm vs. 5.80mm).

All three parts maintain ROHS3 compliance, unlimited moisture sensitivity classification, and Active product status, ensuring regulatory and supply chain compatibility.

Frequently Asked Questions (FAQ)

Q: Can SDR1006-331KL replace CD105NP-331KC in all applications?

A: SDR1006-331KL qualifies as a direct electrical substitute with identical inductance (330 µH), current rating (520 mA), and DC resistance (1.15 Ohm Max). The primary consideration is the dimensional difference: SDR1006-331KL measures 9.80mm x 9.80mm compared to CD105NP-331KC at 10.00mm x 9.00mm. PCB layout verification is required to confirm footprint compatibility. The extended operating temperature range (-40°C to 125°C) is advantageous for high-temperature applications.

Q: What is the difference between the Bourns and Würth Elektronik substitutes?

A: Both SDR1006-331KL (Bourns) and 744776233 (Würth Elektronik) meet the electrical specifications of the main part. SDR1006-331KL has a higher saturation current (850 mA) and a square footprint (9.80mm x 9.80mm). The 744776233 maintains the original rectangular footprint (10.00mm x 9.00mm) with lower saturation current (590 mA) and marginally higher seated height (5.90mm). Footprint matching favors 744776233 for direct PCB substitution without layout modification.

Q: Are all three parts ROHS3 compliant?

A: Yes. CD105NP-331KC, SDR1006-331KL, and 744776233 are all ROHS3 compliant. Additionally, both substitute parts carry REACH unaffected status, providing extended regulatory documentation.

Q: What is the moisture sensitivity level for these inductors?

A: All three parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Can I use these parts interchangeably on the same PCB?

A: Electrical interchangeability is confirmed for all three parts based on inductance, current rating, and DC resistance parameters. Mechanical interchangeability requires PCB layout verification due to dimensional variations. SDR1006-331KL and 744776233 have different footprints from the original CD105NP-331KC. The 744776233 maintains the closest dimensional match to the main part.

Q: What is the inductance test frequency for each part?

A: CD105NP-331KC and SDR1006-331KL are tested at 1 kHz. The 744776233 is tested at 10 kHz. This difference in test frequency may result in minor inductance value variations under different operating conditions.