CS321613-R27K Equivalent & Substitute Parts

Part Overview

The CS321613-R27K is a 270 nH shielded multilayer inductor manufactured by Bourns Inc., rated for 250 mA with a maximum DC resistance of 250mOhm. 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-R27K

Bourns Inc.In Stock: 912CS321613-R27K Datasheet

Current PartRFQ

AIML-1206-R27K-T

Abracon LLCIn Stock: 739AIML-1206-R27K-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS321613-R27K is determined by strict equivalence across the following critical parameters:

• Inductance value: 270 nH with ±10% tolerance
• Current rating: 250 mA minimum
• Package / Case: 1206 (3216 Metric) surface mount
• Core type: Ferrite shielded multilayer construction
• Operating temperature range: -55°C to 125°C
• RoHS3 compliance

The AIML-1206-R27K-T from Abracon LLC meets all these core requirements. While the DC resistance specification differs (400mOhm Max versus 250mOhm Max), this represents a relaxation of the original specification and does not prevent functional substitution in applications where the higher resistance is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-R27K-T is a direct functional substitute for the obsolete CS321613-R27K. Both components are ROHS3 compliant and maintain identical inductance, current rating, and package specifications. The substitute part carries active product status, ensuring long-term availability and supply chain continuity.

The primary design consideration is the increased DC resistance of the AIML-1206-R27K-T (400mOhm Max versus 250mOhm Max). Circuit designs must accommodate this higher resistance specification. Applications with strict power dissipation or impedance requirements should evaluate whether the increased DCR is acceptable for the intended function.

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-R27K-T be used as a direct replacement for the CS321613-R27K?

A: Yes, the AIML-1206-R27K-T is a functional substitute. Both components share identical inductance (270 nH), current rating (250 mA), package form factor (1206), and operating temperature range. The higher DC resistance of the substitute must be evaluated for circuit compatibility.

Q: What is the impact of the increased DC resistance?

A: The AIML-1206-R27K-T has a maximum DC resistance of 400mOhm compared to 250mOhm for the original part. This results in increased power dissipation and impedance. Circuit designs must confirm that this specification change does not degrade performance or exceed thermal limits.

Q: Are both parts RoHS compliant?

A: Yes, both the CS321613-R27K and AIML-1206-R27K-T are ROHS3 compliant.

Q: What is the difference in product status?

A: The CS321613-R27K is obsolete, while the AIML-1206-R27K-T is active. The active status of the substitute ensures continued availability and manufacturing support.

Q: Are the physical dimensions identical?

A: Both components use the 1206 (3216 Metric) package. The seated height differs slightly: CS321613-R27K is 0.059" (1.50mm) maximum, while AIML-1206-R27K-T is 0.055" (1.40mm) maximum. Both are compatible with standard 1206 PCB footprints.