CS321613-R56K Equivalent & Substitute Parts

Part Overview

The CS321613-R56K is a 560 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 classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

CS321613-R56K

Bourns Inc.In Stock: 746CS321613-R56K Datasheet

Current PartRFQ

AIML-1206-R56K-T

Abracon LLCIn Stock: 1206AIML-1206-R56K-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS321613-R56K is determined by strict alignment of the following electrical and mechanical parameters:

• Inductance value: 560 nH (±10% tolerance)
• Current rating: 150 mA minimum
• Package / Case: 1206 (3216 Metric) surface mount
• Core material: Ferrite shielded construction
• Operating temperature range: -55°C to 125°C minimum
• DC resistance: Must not exceed application requirements

The AIML-1206-R56K-T from Abracon LLC meets all primary substitution criteria. While the DC resistance specification differs (550mOhm Max versus 350mOhm Max), this represents a relaxation of the tolerance band rather than a fundamental incompatibility, provided circuit design margins accommodate the higher resistance value.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-R56K-T is an active product from Abracon LLC and represents the primary substitute for the obsolete CS321613-R56K. Both components are ROHS3 compliant and carry MSL 1 ratings, ensuring compatibility with standard manufacturing and storage protocols.

The primary design consideration is the increased DC resistance specification of the AIML-1206-R56K-T (550mOhm Max versus 350mOhm Max). Circuit designs must verify that the additional resistive loss does not exceed acceptable power dissipation or impedance budgets. The lower Q factor (35 @ 25MHz versus 50 @ 25MHz) and higher self-resonant frequency (130 MHz versus 115 MHz) of the Abracon part reflect typical performance variations across manufacturers but do not preclude functional equivalence in most applications.

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-R56K-T directly replace the CS321613-R56K in existing designs?

A: Direct replacement is possible provided the circuit design accommodates the higher DC resistance specification (550mOhm Max). The inductance value, current rating, package form factor, and operating temperature range are identical. Verify that the additional resistive loss does not exceed application requirements.

Q: What is the significance of the different Q factor values?

A: The Q factor (quality factor) at 25 MHz differs between the two parts (50 for Bourns versus 35 for Abracon). This reflects manufacturing process variations and core material characteristics. The impact on circuit performance depends on the specific application; high-Q requirements should be evaluated against the substitute part's specification.

Q: Are both parts suitable for high-frequency applications?

A: Both components operate with self-resonant frequencies above 100 MHz, making them suitable for RF and high-frequency applications within their specified frequency ranges. The AIML-1206-R56K-T exhibits a higher self-resonant frequency (130 MHz), which may provide advantages in certain high-frequency designs.

Q: What are the packaging differences between these parts?

A: The CS321613-R56K is supplied in standard 1206 (3216 Metric) packaging. The AIML-1206-R56K-T is supplied in Tape & Reel (TR) format, which is standard for high-volume production. Both use identical surface mount footprints and are compatible with automated assembly equipment.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. The AIML-1206-R56K-T includes REACH Unaffected status. Both carry EAR99 ECCN classification and identical HTSUS codes, indicating equivalent regulatory standing.