CS321613-220K Equivalent & Substitute Parts

Part Overview

The CS321613-220K is a 22 µH shielded multilayer inductor manufactured by Bourns Inc., designed for surface mount applications in the 1206 (3216 Metric) package. This component is rated for 25 mA maximum current with a DC resistance of 1.4 Ohm maximum and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

CS321613-220K

Bourns Inc.In Stock: 1128CS321613-220K Datasheet

Current PartRFQ

AIML-1206-220K-T

Abracon LLCIn Stock: 23053AIML-1206-220K-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS321613-220K is determined by the following critical parameters:

• Inductance Value: Must be 22 µH with ±10% tolerance
• Package / Case: Must be 1206 (3216 Metric) for mechanical and electrical compatibility
• Shielding Type: Must be shielded to maintain electromagnetic isolation
• Core Material: Must be ferrite-based
• Operating Temperature Range: Must support -55°C to 125°C minimum
• RoHS Compliance: Must meet ROHS3 requirements

The AIML-1206-220K-T from Abracon LLC meets all substitution criteria. While the current rating differs (5 mA versus 25 mA), this represents a derating condition acceptable in applications where the circuit current demand does not exceed the substitute part's rating. The lower DC resistance of the substitute (900 mOhm versus 1.4 Ohm) provides improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-220K-T is a direct substitute for the obsolete CS321613-220K based on matching inductance, tolerance, package geometry, shielding configuration, and operating temperature specifications. Both components are ROHS3 compliant and carry MSL Level 1 ratings, ensuring equivalent environmental and regulatory compliance.

Selection of the substitute should be based on circuit current requirements. The AIML-1206-220K-T is suitable for applications where the maximum circuit current does not exceed 5 mA. For applications requiring the full 25 mA rating of the original part, alternative sources or higher-rated substitutes must be evaluated.

The improved DC resistance characteristic of the substitute (900 mOhm versus 1.4 Ohm) results in lower power dissipation and reduced thermal effects in the circuit, providing a performance advantage in most applications.

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-220K-T be used as a direct replacement for the CS321613-220K?

A: Yes, provided the circuit current does not exceed 5 mA. Both components share identical inductance values, tolerances, package dimensions, and operating temperature ranges. Mechanical and electrical compatibility is confirmed.

Q: What is the significance of the different current ratings?

A: The CS321613-220K is rated for 25 mA maximum current, while the AIML-1206-220K-T is rated for 5 mA. The substitute can be used in any application where the actual circuit current remains below 5 mA. Exceeding this rating may result in inductor saturation and performance degradation.

Q: Are there dimensional differences between these parts?

A: Both components use the 1206 (3216 Metric) package with identical length and width dimensions (3.20mm x 1.60mm). The seated height differs slightly: the original is 1.50mm maximum, while the substitute is 1.40mm maximum. This minor difference does not affect PCB layout compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the CS321613-220K and AIML-1206-220K-T are ROHS3 compliant with MSL Level 1 ratings, confirming equivalent environmental and regulatory compliance for industrial and commercial applications.

Q: How do the Q factor and self-resonant frequency compare?

A: The original part exhibits a Q factor of 45 @ 1MHz with a self-resonant frequency of 16 MHz. The substitute has a Q factor of 40 @ 1MHz with a self-resonant frequency of 19 MHz. Both values fall within acceptable ranges for typical 22 µH inductor applications, with the substitute offering a higher self-resonant frequency.