CS321613-1R2K Equivalent & Substitute Parts

Part Overview

The CS321613-1R2K is a 1.2 µH shielded multilayer inductor manufactured by Bourns Inc., designed for surface mount applications in the 1206 (3216 Metric) package. This component is rated for 100 mA maximum current with a DC resistance of 300mOhm maximum and operates across the temperature range of -55°C to 125°C. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

CS321613-1R2K

Bourns Inc.In Stock: 1151CS321613-1R2K Datasheet

Current PartRFQ

AIML-1206-1R2K-T

Abracon LLCIn Stock: 993AIML-1206-1R2K-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS321613-1R2K is determined by strict alignment of the following critical parameters:

• Inductance Value: Must be 1.2 µH with ±10% tolerance
• Current Rating: Must support minimum 100 mA
• Package / Case: Must be 1206 (3216 Metric) for mechanical and electrical compatibility
• Shielding: Must be shielded to maintain electromagnetic isolation
• Core Material: Must be ferrite-based
• Operating Temperature Range: Must cover -55°C to 125°C minimum
• Mounting Type: Must be surface mount compatible
• RoHS Compliance: Must meet ROHS3 requirements

The AIML-1206-1R2K-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 circuit functionality at the specified 100 mA current rating.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-1R2K-T is a direct functional equivalent for the obsolete CS321613-1R2K. Selection of the Abracon component is supported by the following factors:

• Product Status: The AIML-1206-1R2K-T maintains active production status, ensuring long-term availability and supply chain continuity.
• Compliance Certification: Both components meet ROHS3 compliance requirements, maintaining regulatory alignment for current and future applications.
• Electrical Equivalence: Matching inductance value, current rating, tolerance, and operating temperature range ensure functional compatibility in circuit applications.
• Mechanical Compatibility: Identical 1206 (3216 Metric) package dimensions and surface mount configuration enable direct PCB layout compatibility without redesign.
• DC Resistance Consideration: The increased DCR specification (400mOhm versus 300mOhm) results in marginally higher power dissipation at rated current. At 100 mA, this represents an additional 10 mW of dissipation, which remains within acceptable thermal margins for typical 1206 package applications.

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-1R2K-T be used as a direct replacement for the CS321613-1R2K without PCB modification?

A: Yes. Both components share identical 1206 (3216 Metric) package dimensions and surface mount configuration. No PCB layout changes are required for mechanical or electrical integration.

Q: What is the significance of the DC resistance difference between the two parts?

A: The CS321613-1R2K specifies 300mOhm maximum DCR, while the AIML-1206-1R2K-T specifies 400mOhm maximum. At the rated 100 mA current, this difference results in approximately 10 mW additional power dissipation in the substitute part. This remains within acceptable thermal operating margins for 1206 package inductors in standard PCB applications.

Q: Are both components RoHS compliant?

A: Yes. Both the CS321613-1R2K and AIML-1206-1R2K-T meet ROHS3 compliance requirements, ensuring regulatory alignment for applications subject to RoHS directives.

Q: What is the moisture sensitivity level for the substitute part?

A: The AIML-1206-1R2K-T carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processing.

Q: Is the substitute part available in the same packaging format?

A: The AIML-1206-1R2K-T is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount production. The CS321613-1R2K packaging format was not specified in the original documentation.