0805-3N3K Equivalent & Substitute Parts

Part Overview

The 0805-3N3K is a 3.3 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 600 mA with a maximum DC resistance of 80mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 125°C and is designed for surface mount applications in high-frequency circuits.

Substiute Parts

0805-3N3K

API Delevan Inc.In Stock: 9620805-3N3K Datasheet

Current PartRFQ

CW201212-3N3J

Bourns Inc.In Stock: 876CW201212-3N3J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0805-3N3K is determined by strict equivalence across the following critical parameters:

• Inductance value: 3.3 nH (tolerance variations acceptable within design margin)
• Current rating: 600 mA minimum
• DC resistance: 80mOhm maximum
• Core material and shielding: Ceramic, unshielded
• Inductor construction: Drum core, wirewound
• Operating temperature range: -40°C to 125°C minimum
• Self resonant frequency: 6 GHz
• Mounting: Surface mount

The CW201212-3N3J from Bourns Inc. meets all substitution criteria and is classified as an active product, providing long-term availability and supply chain stability.

Parameter Comparison

Engineering Selection Recommendations

The CW201212-3N3J is the qualified substitute for the obsolete 0805-3N3K. Selection is based on the following factors:

• Electrical equivalence: Both parts maintain identical inductance values, current ratings, and DC resistance specifications within acceptable design tolerances.
• Product status: The CW201212-3N3J is an active product with confirmed inventory availability, ensuring procurement continuity and long-term supply chain support.
• Compliance: The Bourns substitute is ROHS3 compliant, meeting current regulatory requirements, whereas the original part is RoHS non-compliant.
• Tolerance improvement: The CW201212-3N3J offers tighter inductance tolerance (±5% versus ±10%), providing enhanced circuit performance predictability.
• Standardized packaging: The substitute uses standard 0805 (2012 Metric) packaging, improving manufacturing compatibility and assembly efficiency compared to the nonstandard package of the original part.

Frequently Asked Questions (FAQ)

Q: Can the CW201212-3N3J be used as a direct replacement for the 0805-3N3K?

A: Yes. Both parts share identical inductance values (3.3 nH), current ratings (600 mA), DC resistance (80mOhm), core materials (ceramic), and operating temperature ranges (-40°C to 125°C). The substitute meets all electrical requirements for direct substitution.

Q: What are the physical differences between these parts?

A: The 0805-3N3K uses a nonstandard package, while the CW201212-3N3J uses standard 0805 (2012 Metric) packaging. The CW201212-3N3J dimensions are 0.083" L x 0.059" W (2.10mm x 1.50mm) with a seated height of 0.059" (1.50mm), compared to the original part at 0.090" L x 0.068" W (2.29mm x 1.73mm) with a seated height of 0.060" (1.52mm). These dimensional differences are minor and typically accommodate standard PCB footprints.

Q: Are there compliance differences between the original and substitute parts?

A: Yes. The CW201212-3N3J is ROHS3 compliant, while the 0805-3N3K is RoHS non-compliant. Both parts are REACH unaffected and classified under ECCN EAR99. If RoHS compliance is required for your application, the Bourns substitute is the appropriate choice.

Q: How do the Q factors compare?

A: The 0805-3N3K has a Q of 50 @ 1.5GHz, while the CW201212-3N3J has a Q of 30 @ 1.5GHz. Both parts maintain the same self-resonant frequency of 6 GHz. The higher Q of the original part indicates lower losses at 1.5GHz; however, both values are acceptable for standard RF and high-frequency applications within the specified operating parameters.

Q: What is the inductance tolerance difference, and does it matter?

A: The 0805-3N3K has ±10% tolerance, while the CW201212-3N3J has ±5% tolerance. The tighter tolerance of the substitute provides improved circuit performance predictability and reduces design margin requirements. For applications with strict inductance specifications, the Bourns part offers superior performance.

Q: Is the substitute part available in the same packaging format?

A: The CW201212-3N3J is supplied in Tape & Reel (TR) format, which is standard for high-volume manufacturing. The original part's packaging format is not specified in standard terms. Standard 0805 (2012 Metric) packaging is compatible with automated assembly equipment and is the industry standard for this component class.