CS321613-68NK Equivalent & Substitute Parts

Part Overview

The CS321613-68NK is a 68 nH shielded multilayer inductor manufactured by Bourns Inc., rated for 300 mA with a maximum DC resistance of 150mOhm. 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

CS321613-68NK

Bourns Inc.In Stock: 1084CS321613-68NK Datasheet

Current PartRFQ

AIML-1206-R068M-T

Abracon LLCIn Stock: 1205AIML-1206-R068M-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS321613-68NK is determined by the following critical parameters:

• Inductance Value: Must be 68 nH (exact match required)
• Current Rating: Must support minimum 300 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 minimum
• DC Resistance (DCR): Acceptable within component electrical performance limits

The AIML-1206-R068M-T from Abracon LLC meets these core substitution criteria. While tolerance and Q-factor specifications differ from the original part, the substitute maintains functional equivalence for the primary electrical parameters and physical form factor requirements.

Parameter Comparison

Engineering Selection Recommendations

The AIML-1206-R068M-T is a suitable substitute for the obsolete CS321613-68NK based on the following factors:

• Both components are ROHS3 compliant and carry MSL Level 1 rating, ensuring equivalent environmental and regulatory compliance
• The substitute maintains identical inductance value (68 nH), current rating (300 mA), package form factor (1206), and operating temperature range
• The substitute is currently in active production status, providing supply chain continuity
• The increased DC resistance (250mOhm vs. 150mOhm) and lower Q-factor (30 vs. 60 @ 50MHz) represent measurable differences that must be evaluated against specific circuit requirements
• Physical dimensions remain compatible for PCB layout and assembly processes

Frequently Asked Questions (FAQ)

Q: Can the AIML-1206-R068M-T be used as a direct replacement for the CS321613-68NK?

A: The AIML-1206-R068M-T matches the critical electrical and physical parameters (inductance, current rating, package, temperature range, and shielding). However, the higher DC resistance and lower Q-factor must be evaluated against your circuit's performance specifications before implementation.

Q: What is the significance of the tolerance difference (±10% vs. ±20%)?

A: The original part specifies ±10% inductance tolerance, while the substitute specifies ±20%. Applications requiring tighter inductance accuracy may require circuit compensation or alternative component selection.

Q: Are the physical dimensions compatible for PCB assembly?

A: Both components use the 1206 (3216 Metric) package with identical length and width (3.20mm x 1.60mm). The substitute has a slightly lower seated height (1.40mm vs. 1.50mm), which does not affect standard PCB assembly compatibility.

Q: What does the higher DC resistance of the substitute mean for circuit performance?

A: The AIML-1206-R068M-T has a maximum DC resistance of 250mOhm compared to 150mOhm for the original part. This increases resistive losses in the inductor, which may affect efficiency and thermal performance in power-sensitive applications.

Q: Are both components RoHS compliant?

A: Yes, both the CS321613-68NK and AIML-1206-R068M-T are ROHS3 compliant and carry MSL Level 1 (unlimited moisture sensitivity) ratings.