CS321613-R68K Equivalent & Substitute Parts

Part Overview

The CS321613-R68K is a 680 nH shielded multilayer inductor manufactured by Bourns Inc., rated for 150 mA with a maximum DC resistance of 350mOhm. 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-R68K

Bourns Inc.In Stock: 1036CS321613-R68K Datasheet

Current PartRFQ

AIML-1206-R68K-T

Abracon LLCIn Stock: 748AIML-1206-R68K-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS321613-R68K is determined by the following critical parameters:

• Inductance Value: Must be 680 nH with ±10% tolerance
• Current Rating: Must support minimum 150 mA
• Package / Case: Must be 1206 (3216 Metric) surface mount
• Shielding: Must be shielded construction
• Core Material: Must be ferrite-based
• Operating Temperature Range: Must cover -55°C to 125°C
• DC Resistance: Should not exceed the application's tolerance for losses

The AIML-1206-R68K-T from Abracon LLC meets all mandatory substitution criteria. While its DC resistance specification (650mOhm Max) is higher than the original part (350mOhm Max), it remains within the same inductance, current rating, package, and thermal specifications, making it a valid substitute where DCR tolerance permits.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-R68K-T is the qualified substitute for the obsolete CS321613-R68K. Selection of this substitute is supported by:

• Product Status: The substitute is active and in production, ensuring long-term availability and supply chain stability.
• Compliance: Both parts are ROHS3 compliant and carry identical MSL ratings, meeting regulatory and environmental requirements.
• Functional Equivalence: Inductance value, current rating, package form factor, and operating temperature range are identical.
• Physical Compatibility: The substitute's reduced seated height (1.40mm vs. 1.50mm) provides improved PCB layout flexibility.

The primary design consideration is the increased DC resistance of the substitute (650mOhm vs. 350mOhm). Applications sensitive to inductor losses or thermal dissipation must evaluate whether this 1.86x increase in DCR is acceptable for the intended circuit function.

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-R68K-T be used as a direct replacement for the CS321613-R68K?

A: Yes, provided the circuit design accommodates the higher DC resistance specification. Both parts share identical inductance, current rating, package, and operating temperature range. The substitute is physically compatible and meets all compliance requirements.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The AIML-1206-R68K-T has a maximum DCR of 650mOhm compared to 350mOhm in the original part. This increases resistive losses and heat dissipation. Circuits with tight loss budgets or thermal constraints must evaluate whether this difference affects performance.

Q: Are there packaging differences between these parts?

A: Both parts use the 1206 (3216 Metric) surface mount package. The substitute has a slightly lower seated height (1.40mm vs. 1.50mm), which may provide minor PCB layout advantages but does not affect electrical compatibility.

Q: Why is the original CS321613-R68K listed as obsolete?

A: Obsolescence is a manufacturer lifecycle decision. The AIML-1206-R68K-T from Abracon LLC is an active product with equivalent electrical specifications and is recommended for new designs and production continuity.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant, carry MSL Level 1 (Unlimited) ratings, and operate across -55°C to 125°C. They meet identical regulatory and environmental requirements.