CS321613-R33K Equivalent & Substitute Parts

Part Overview

The CS321613-R33K is a 330 nH shielded multilayer inductor manufactured by Bourns Inc., rated for 250 mA with a maximum DC resistance of 300mOhm. This component is packaged in a 1206 (3216 Metric) surface mount form factor and operates across the temperature range of -55°C to 125°C. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

CS321613-R33K

Bourns Inc.In Stock: 1001CS321613-R33K Datasheet

Current PartRFQ

AIML-1206-R33K-T

Abracon LLCIn Stock: 31001AIML-1206-R33K-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS321613-R33K is determined by the following critical parameters:

• Inductance value: 330 nH with ±10% tolerance
• Current rating: minimum 250 mA
• Shielding type: shielded construction required
• Core material: ferrite
• Package: 1206 (3216 Metric) surface mount
• Operating temperature range: -55°C to 125°C minimum
• DC resistance: acceptable within component design specifications

The AIML-1206-R33K-T from Abracon LLC meets all substitution criteria. While the DC resistance specification differs (400mOhm Max versus 300mOhm Max), this represents a relaxation of the original specification and remains within acceptable operating parameters for equivalent functionality.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-R33K-T is a direct substitute for the obsolete CS321613-R33K. Both components are ROHS3 compliant and carry identical moisture sensitivity ratings. The substitute part is currently in active production status with substantial inventory availability, ensuring supply chain continuity.

The primary specification difference is the DC resistance maximum: the substitute allows 400mOhm versus the original 300mOhm specification. This difference must be evaluated within the context of the specific circuit application. For applications where the original 300mOhm specification was a hard requirement, circuit-level analysis is necessary to determine if the increased resistance is acceptable.

Both components share identical electrical characteristics for inductance, current rating, operating temperature range, and shielding configuration, supporting direct PCB footprint compatibility and functional equivalence in most applications.

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-R33K-T be used as a direct replacement for the CS321613-R33K?

A: Yes, the AIML-1206-R33K-T is a functional equivalent. Both components share identical inductance values, current ratings, package dimensions, and operating temperature ranges. The substitute part is currently in active production, addressing the obsolescence of the original Bourns component.

Q: What is the significance of the different DC resistance specifications?

A: The CS321613-R33K specifies a maximum DC resistance of 300mOhm, while the AIML-1206-R33K-T specifies 400mOhm maximum. This difference affects power dissipation and thermal characteristics in the inductor. Applications sensitive to resistive losses must evaluate whether the increased resistance impacts circuit performance.

Q: Are the physical dimensions identical?

A: Both components use the 1206 (3216 Metric) package. Length and width are identical at 0.126" L x 0.063" W (3.20mm x 1.60mm). The seated height differs slightly: 0.059" (1.50mm) for the original versus 0.055" (1.40mm) for the substitute. This minor height difference does not affect PCB layout compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the CS321613-R33K and AIML-1206-R33K-T are ROHS3 compliant with MSL rating of 1 (Unlimited). Both carry identical ECCN and HTSUS classifications.

Q: What is the availability status of each part?

A: The CS321613-R33K is obsolete with limited remaining inventory. The AIML-1206-R33K-T is in active production status with substantial inventory availability, making it the recommended choice for new designs and ongoing production requirements.