CD105NP-391KC Equivalent & Substitute Parts Reference

Part Overview

The CD105NP-391KC is a 390 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is rated for 480 mA continuous current with a maximum DC resistance of 1.3 Ohm and operates across the temperature range of -40°C to 100°C. The component 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 enhanced performance specifications within the same electrical and mechanical parameter envelope.

Substiute Parts

CD105NP-391KC

Sumida America Components Inc.In Stock: 1046CD105NP-391KC Datasheet

Current PartRFQ

SDR1006-391KL

Bourns Inc.In Stock: 2044SDR1006-391KL Datasheet

DirectRFQ

744776239

Würth ElektronikIn Stock: 1302744776239 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD105NP-391KC are qualified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Inductance: 390 µH ±10%
• Current Rating: minimum 480 mA
• DC Resistance: 1.3 Ohm maximum
• Core Material: Ferrite
• Shielding: Unshielded

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package Classification: Nonstandard
• Height (Seated Max): 5.80 mm nominal tolerance
• Moisture Sensitivity Level: 1 (Unlimited)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8504.50.4000

Substitute parts are classified as Direct or Similar based on dimensional and performance specification alignment within these parameters.

Parameter Comparison

Engineering Selection Recommendations

SDR1006-391KL (Bourns Inc.) - Direct Substitute:

The SDR1006-391KL qualifies as a direct substitute for the CD105NP-391KC. Both components share identical electrical specifications: 390 µH inductance, 480 mA current rating, and 1.3 Ohm maximum DC resistance. Mechanical dimensions are equivalent within nonstandard package classification, with identical seated height of 5.80 mm. Both components maintain ROHS3 compliance, MSL 1 rating, and identical trade classification codes. The SDR1006-391KL operates across an extended temperature range (-40°C to 125°C) compared to the CD105NP-391KC (-40°C to 100°C), providing additional thermal margin. Product status is Active for both components.

744776239 (Würth Elektronik) - Similar Substitute:

The 744776239 qualifies as a similar substitute with minor parameter variations. Electrical specifications align: 390 µH inductance, 1.3 Ohm maximum DC resistance, and ferrite unshielded core. Current rating is 490 mA, which exceeds the 480 mA requirement of the CD105NP-391KC. Mechanical dimensions are identical in length and width (10.00 mm x 9.00 mm), with seated height of 5.90 mm, representing a 0.10 mm increase from the CD105NP-391KC baseline. Operating temperature range extends to 125°C. ROHS3 compliance, MSL 1 rating, and trade classification codes are identical. Product status is Active.

Both substitute parts maintain full compliance with the regulatory and environmental requirements of the original component.

Frequently Asked Questions (FAQ)

Q: Can SDR1006-391KL be used as a direct replacement for CD105NP-391KC in all applications?

A: Yes. The SDR1006-391KL meets all electrical and mechanical parameter requirements of the CD105NP-391KC. Inductance, current rating, DC resistance, core material, shielding, and package classification are identical. Both components are ROHS3 compliant with MSL 1 rating. The extended operating temperature range of the SDR1006-391KL (-40°C to 125°C versus -40°C to 100°C) provides additional thermal capability without introducing incompatibility.

Q: What are the differences between the 744776239 and CD105NP-391KC?

A: The 744776239 differs in three parameters: current rating (490 mA versus 480 mA), seated height (5.90 mm versus 5.80 mm), and inductance test frequency (10 kHz versus 1 kHz). The higher current rating and increased height are within acceptable tolerance for most applications. Electrical specifications for inductance, DC resistance, and core material remain identical.

Q: Are there any dimensional constraints when substituting the 744776239 for CD105NP-391KC?

A: The 744776239 has a maximum seated height of 5.90 mm compared to 5.80 mm for the CD105NP-391KC, representing a 0.10 mm increase. Length and width dimensions are identical (10.00 mm x 9.00 mm). PCB layout and component clearance must accommodate this height variation.

Q: Do all three parts share the same packaging format?

A: Yes. All three components are supplied in Tape & Reel (TR) packaging and classified as Nonstandard package type. Moisture Sensitivity Level is 1 (Unlimited) for all parts, eliminating special storage or handling requirements.

Q: What compliance certifications apply to substitute parts?

A: All three components are ROHS3 compliant. The SDR1006-391KL and 744776239 carry REACH Unaffected status. All parts share identical ECCN (EAR99) and HTSUS (8504.50.4000) classifications.

Q: Can the CD105NP-391KC be substituted with either alternative in high-temperature applications?

A: The CD105NP-391KC operates to 100°C maximum. Both SDR1006-391KL and 744776239 extend to 125°C, making them suitable for applications requiring operation above 100°C. The original component cannot be used in applications exceeding 100°C.