CR32NP-331KC Equivalent & Substitute Parts

Part Overview

The CR32NP-331KC is a 330 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 125 mA continuous current with a maximum DC resistance of 7 Ohm and operates across the temperature range of -40°C to 100°C. The part is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent inductance values, core materials, shielding characteristics, and mounting types align with the main part specifications, allowing direct functional replacement in circuit applications where the electrical and mechanical parameters remain within acceptable tolerances.

Substiute Parts

CR32NP-331KC

Sumida America Components Inc.In Stock: 938CR32NP-331KC Datasheet

Current PartRFQ

SDR0302-331KL

Bourns Inc.In Stock: 6518SDR0302-331KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CR32NP-331KC is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH with ±10% tolerance
• Core type: Ferrite drum core, wirewound construction
• Shielding configuration: Unshielded
• Mounting technology: Surface mount

Secondary Compatibility Factors:

• Current rating: Substitute must support minimum 125 mA continuous current
• DC resistance: Substitute DCR must not exceed application circuit requirements
• Operating temperature: Substitute must cover or exceed -40°C to 100°C range
• Regulatory compliance: ROHS3 compliance required

The SDR0302-331KL from Bourns Inc. qualifies as a direct substitute based on matching inductance specification, ferrite drum core construction, unshielded configuration, and surface mount packaging. The substitute part exceeds the current rating requirement (130 mA vs. 125 mA) and provides extended temperature range coverage (-40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

CR32NP-331KC Selection Criteria: The CR32NP-331KC remains the primary choice when the specified 7 Ohm maximum DC resistance is a circuit requirement. This part is Active status with full ROHS3 compliance and unlimited moisture sensitivity rating. The component is suitable for applications operating within the -40°C to 100°C temperature envelope.

SDR0302-331KL Selection Criteria: The SDR0302-331KL from Bourns serves as a functional equivalent when circuit design permits the higher 10 Ohm maximum DC resistance specification. This substitute provides enhanced current rating margin (130 mA vs. 125 mA) and extended operating temperature range (-40°C to 125°C). The SDR0302-331KL is Active status with ROHS3 compliance, REACH Unaffected designation, and unlimited moisture sensitivity rating. The smaller physical footprint (3.00mm x 2.80mm vs. 3.80mm x 3.50mm) may provide layout advantages in space-constrained applications.

Compliance Verification: Both parts maintain ROHS3 compliance and EAR99 export classification. Both components carry MSL 1 (Unlimited) moisture sensitivity rating, eliminating special handling requirements during storage and assembly.

Frequently Asked Questions (FAQ)

Q: What is the primary difference between CR32NP-331KC and SDR0302-331KL?

A: Both parts share identical 330 µH inductance and ±10% tolerance specifications. The primary difference is DC resistance: CR32NP-331KC specifies 7 Ohm maximum, while SDR0302-331KL specifies 10 Ohm maximum. The Bourns substitute also provides higher current rating (130 mA vs. 125 mA) and extended temperature range (-40°C to 125°C vs. -40°C to 100°C).

Q: Can SDR0302-331KL replace CR32NP-331KC in all applications?

A: Substitution is valid when the circuit design accommodates the higher DC resistance value of 10 Ohm. Applications sensitive to resistive losses or requiring the lower 7 Ohm specification must use the original CR32NP-331KC part.

Q: Are there physical compatibility concerns with the substitute part?

A: The SDR0302-331KL has a smaller footprint (3.00mm x 2.80mm) compared to CR32NP-331KC (3.80mm x 3.50mm). PCB layout verification is required to confirm the substitute part fits within the allocated component space. Both parts use surface mount technology and nonstandard package configurations.

Q: Do both parts require special moisture handling?

A: No. Both CR32NP-331KC and SDR0302-331KL carry MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture control requirements during storage, handling, or assembly processes.

Q: What regulatory certifications apply to both parts?

A: Both parts are ROHS3 compliant and classified as EAR99 for export purposes. The SDR0302-331KL additionally carries REACH Unaffected designation. Both parts fall under HTSUS code 8504.50.4000.

Q: Which part should be selected for new designs?

A: For new designs, either part is acceptable based on circuit requirements. If DC resistance must remain at 7 Ohm maximum, specify CR32NP-331KC. If the higher 10 Ohm DCR is acceptable and extended temperature range (-40°C to 125°C) is beneficial, SDR0302-331KL provides additional design margin and smaller physical footprint.