CS321613-1R0K Equivalent & Substitute Parts

Part Overview

The CS321613-1R0K is a 1 µH shielded multilayer inductor manufactured by Bourns Inc., rated for 100 mA with a maximum DC resistance of 250 mOhm. 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 equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

CS321613-1R0K

Bourns Inc.In Stock: 943CS321613-1R0K Datasheet

Current PartRFQ

AIML-1206-1R0K-T

Abracon LLCIn Stock: 11126AIML-1206-1R0K-T Datasheet

DirectRFQ

LQM31PN1R0M00L

Murata ElectronicsIn Stock: 2038LQM31PN1R0M00L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CS321613-1R0K are identified based on the following critical parameters that determine functional compatibility:

• Inductance Value: 1 µH (exact match required)
• Package / Case: 1206 (3216 Metric) (physical compatibility)
• Mounting Type: Surface Mount (assembly compatibility)
• Shielding: Shielded (electromagnetic performance requirement)
• Operating Temperature Range: -55°C ~ 125°C (thermal compatibility)

The substitute parts are grouped into two categories:

Direct Substitute (AIML-1206-1R0K-T): Matches all critical parameters with identical inductance, package, shielding, and temperature range. Variation in DC resistance (400 mOhm vs. 250 mOhm) represents a tolerance difference within acceptable engineering margins for this component class.

Similar Substitute (LQM31PN1R0M00L): Matches inductance, package, shielding, and temperature range. This part exhibits higher current rating (1.2 A vs. 100 mA) and lower DC resistance (150 mOhm vs. 250 mOhm), making it suitable for applications where the original current specification is not a limiting constraint.

Parameter Comparison

Engineering Selection Recommendations

AIML-1206-1R0K-T (Abracon LLC) is the primary direct substitute for the CS321613-1R0K. This part maintains identical electrical specifications for inductance and current rating while offering active product status and full ROHS3 compliance. The increased DC resistance (400 mOhm vs. 250 mOhm) is within acceptable tolerance margins for multilayer inductor substitution. This part is recommended for applications requiring direct pin-for-pin and functional compatibility with minimal design verification.

LQM31PN1R0M00L (Murata Electronics) serves as an alternative substitute suitable for applications where the original 100 mA current specification does not represent a design constraint. This part offers superior electrical performance with lower DC resistance (150 mOhm) and higher current rating (1.2 A), making it appropriate for designs with headroom in current requirements. The part maintains active product status and full ROHS3 compliance. The wider inductance tolerance (±20% vs. ±10%) should be evaluated against circuit requirements.

Both substitute parts are available in active production status, ensuring long-term supply continuity compared to the obsolete original component.

Frequently Asked Questions (FAQ)

Q: Can AIML-1206-1R0K-T be used as a direct replacement for CS321613-1R0K?

A: Yes. Both parts share identical inductance (1 µH), current rating (100 mA), package (1206), shielding type, and operating temperature range. The DC resistance difference (400 mOhm vs. 250 mOhm) falls within normal manufacturing tolerance for this component class and does not prevent direct substitution in standard applications.

Q: What are the key differences between the two substitute options?

A: AIML-1206-1R0K-T matches the original specifications more closely, including current rating and inductance tolerance. LQM31PN1R0M00L offers higher current capability (1.2 A) and lower DC resistance (150 mOhm) but has a wider inductance tolerance (±20%). Selection depends on whether the application requires the tighter tolerance and specific current rating of the original design.

Q: Are all three parts physically compatible in the same PCB footprint?

A: Yes. All three parts use the 1206 (3216 Metric) package with identical length and width dimensions (3.20mm x 1.60mm). Height variations are minor (1.50mm, 1.40mm, and 0.95mm respectively) and do not affect PCB assembly compatibility.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. Both AIML-1206-1R0K-T and LQM31PN1R0M00L are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original part's compliance profile.

Q: Which substitute should be selected for new designs?

A: AIML-1206-1R0K-T is recommended for designs requiring specification parity with the original CS321613-1R0K. LQM31PN1R0M00L is suitable for applications where enhanced performance (lower DCR, higher current rating) provides design margin and the wider inductance tolerance is acceptable.