CD104NP-331KC Equivalent & Substitute Parts

Part Overview

The CD104NP-331KC is a 330 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is designed for applications requiring 420 mA current handling capability with a maximum DC resistance of 1.1 Ohm. The component operates across the temperature range of -40°C to 100°C and is classified as Active product status with ROHS3 compliance. Substitute parts are identified when equivalent inductance values, current ratings, and package compatibility align with application requirements while maintaining electrical performance within specified tolerances.

Substiute Parts

CD104NP-331KC

Sumida America Components Inc.In Stock: 913CD104NP-331KC Datasheet

Current PartRFQ

SDR1045-331K

Bourns Inc.In Stock: 2333SDR1045-331K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD104NP-331KC is based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH with ±10% tolerance
• Mounting type: Surface Mount
• Shielding configuration: Unshielded
• Package classification: Nonstandard
• RoHS compliance: ROHS3 Compliant

Secondary Compatibility Factors:

• Current rating must equal or exceed 420 mA
• DC resistance must not exceed 1.1 Ohm maximum
• Operating temperature range must encompass -40°C to 100°C minimum
• Moisture sensitivity level: 1 (Unlimited)

The SDR1045-331K from Bourns Inc. qualifies as a direct substitute based on matching inductance specification, surface mount configuration, unshielded design, and ROHS3 compliance. The substitute part exceeds the current rating requirement at 620 mA and maintains compatible DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

CD104NP-331KC Selection: Choose the CD104NP-331KC when the primary design requirement specifies maximum DC resistance of 1.1 Ohm and current handling of 420 mA. This part maintains Active product status with ROHS3 compliance and is suitable for applications where the lower operating temperature ceiling of 100°C is sufficient.

SDR1045-331K Selection: The SDR1045-331K from Bourns Inc. serves as a direct substitute when higher current capacity (620 mA) or extended temperature operation to 125°C is required. The substitute part maintains identical inductance specification and tolerance while providing enhanced thermal performance. The increased DC resistance of 1.7 Ohm maximum must be evaluated against circuit design constraints. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating.

Compliance Considerations: Both parts are classified as Active products with ROHS3 compliance and EAR99 export classification. Selection between these parts should prioritize circuit performance requirements rather than regulatory status, as both meet equivalent compliance frameworks.

Frequently Asked Questions (FAQ)

Q: Can SDR1045-331K directly replace CD104NP-331KC in all applications?

A: Direct substitution is valid when circuit design accommodates the increased DC resistance of 1.7 Ohm (versus 1.1 Ohm maximum). The higher current rating of 620 mA does not create compatibility issues. Verify that the additional 0.6 Ohm resistance does not exceed circuit power dissipation or voltage drop tolerances.

Q: What is the primary difference between these two inductors?

A: The SDR1045-331K features a drum core wirewound construction with ferrite material, while the CD104NP-331KC uses unspecified core material. The Bourns substitute provides higher current saturation (700 mA) and extended temperature range (-40 to 125°C) compared to the Sumida part (-40 to 100°C).

Q: Are the physical dimensions compatible?

A: Both parts use nonstandard packages with similar footprints. CD104NP-331KC measures 10.00mm L x 9.00mm W x 4.50mm H (seated). SDR1045-331K measures 10.00mm L x 10.00mm W x 4.80mm H (seated). The 1mm width difference and 0.3mm height difference must be verified against PCB layout constraints.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both CD104NP-331KC and SDR1045-331K are ROHS3 compliant with EAR99 export classification and HTSUS code 8504.50.4000. Both carry moisture sensitivity level 1 (unlimited).

Q: What inductance frequency test parameters apply?

A: CD104NP-331KC uses 1 kHz inductance frequency test, while SDR1045-331K uses 100 kHz. This difference reflects different measurement methodologies but does not affect the 330 µH nominal specification at the stated tolerance of ±10%.