0805-22NK Equivalent & Substitute Parts Reference

Part Overview

The 0805-22NK is a 22 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 500 mA continuous current with a maximum DC resistance of 220 mOhm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement.

Substitute parts must maintain the core electrical specifications: 22 nH inductance value, surface mount configuration, unshielded drum core construction, and ceramic core material. The primary drivers for substitution are product status transition and component availability.

Substiute Parts

0805-22NK

API Delevan Inc.In Stock: 9420805-22NK Datasheet

Current PartRFQ

CW201212-22NG

Bourns Inc.In Stock: 934CW201212-22NG Datasheet

DirectRFQ

CW201212-22NJ

Bourns Inc.In Stock: 6150CW201212-22NJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0805-22NK are identified based on the following critical parameters that define functional equivalence:

Core Electrical Specifications:

• Inductance value: 22 nH (exact match required)
• Core material: Ceramic drum core (unshielded)
• Mounting type: Surface Mount

Performance Envelope:

• Current rating: Equal to or greater than 500 mA
• DC resistance: Equal to or less than 220 mOhm
• Operating temperature range: -40°C to 125°C (minimum requirement)

Physical Compatibility:

• Package classification: 0805 (2012 Metric) footprint compatibility
• Height constraints: Maximum seated height 1.52 mm

The substitute parts CW201212-22NG and CW201212-22NJ, both manufactured by Bourns Inc., meet these criteria. Both are active products with improved DC resistance characteristics (100 mOhm versus 220 mOhm) and higher current ratings (600 mA versus 500 mA), providing enhanced performance margins. Both maintain the 22 nH inductance specification and ceramic unshielded drum core construction.

Parameter Comparison

Engineering Selection Recommendations

CW201212-22NG Selection Criteria:

• Active product status with ongoing manufacturer support
• ROHS3 compliance for regulated applications
• Tighter inductance tolerance (±2%) compared to original part (±10%)
• Superior DC resistance performance (100 mOhm versus 220 mOhm)
• Higher current rating margin (600 mA versus 500 mA)
• Improved Q factor (60 versus 55 at 500 MHz)
• Higher self-resonant frequency (3.3 GHz versus 2.6 GHz)
• Standardized 0805 (2012 Metric) package designation
• Tape & Reel packaging for automated assembly

CW201212-22NJ Selection Criteria:

• Active product status with ongoing manufacturer support
• ROHS3 compliance for regulated applications
• Moderate inductance tolerance (±5%) suitable for general applications
• Superior DC resistance performance (100 mOhm versus 220 mOhm)
• Higher current rating margin (600 mA versus 500 mA)
• Improved Q factor (60 versus 55 at 500 MHz)
• Higher self-resonant frequency (3.3 GHz versus 2.6 GHz)
• Standardized 0805 (2012 Metric) package designation
• Tape & Reel packaging for automated assembly
• Higher inventory availability (6112 Pcs versus 866 Pcs for CW201212-22NG)

Both substitute parts provide improved electrical performance and regulatory compliance. Selection between CW201212-22NG and CW201212-22NJ depends on tolerance requirements: CW201212-22NG for applications requiring ±2% tolerance, CW201212-22NJ for applications accepting ±5% tolerance with superior supply availability.

Frequently Asked Questions (FAQ)

Q: Can CW201212-22NG and CW201212-22NJ be used interchangeably with 0805-22NK?

A: Both Bourns parts are functionally equivalent substitutes for the obsolete 0805-22NK. They maintain the 22 nH inductance specification, ceramic unshielded drum core construction, and surface mount configuration. The primary differences are inductance tolerance (±2% for CW201212-22NG, ±5% for CW201212-22NJ) and inventory levels. Physical dimensions are slightly smaller (2.10mm x 1.50mm versus 2.29mm x 1.73mm), which is compatible with standard 0805 footprints.

Q: What are the key performance improvements in the substitute parts?

A: The substitute parts offer three primary improvements: reduced DC resistance (100 mOhm versus 220 mOhm maximum), increased current rating (600 mA versus 500 mA), and higher self-resonant frequency (3.3 GHz versus 2.6 GHz). These improvements provide better thermal performance, increased current handling capacity, and extended frequency response.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CW201212-22NG and CW201212-22NJ are ROHS3 compliant, whereas the original 0805-22NK is non-compliant. This compliance is required for applications subject to RoHS regulations.

Q: Do the substitute parts fit the same PCB footprint?

A: The substitute parts use the standardized 0805 (2012 Metric) package, which is compatible with standard 0805 footprints. The physical dimensions (2.10mm x 1.50mm) are slightly smaller than the original nonstandard package (2.29mm x 1.73mm), ensuring compatibility with existing PCB designs.

Q: What is the difference between CW201212-22NG and CW201212-22NJ?

A: The primary difference is inductance tolerance: CW201212-22NG specifies ±2% tolerance, while CW201212-22NJ specifies ±5% tolerance. Both parts have identical electrical performance characteristics (100 mOhm DCR, 600 mA current rating, 60 Q @ 500 MHz). CW201212-22NJ has significantly higher inventory availability (6112 Pcs versus 866 Pcs).

Q: Which substitute part should be selected for new designs?

A: For new designs, either substitute part is acceptable. CW201212-22NG is recommended for applications requiring tighter inductance tolerance control. CW201212-22NJ is recommended for applications with standard tolerance requirements and where supply chain continuity is a priority due to higher inventory levels.

Q: Are there any thermal or frequency response differences?

A: The substitute parts demonstrate improved thermal characteristics due to lower DC resistance (100 mOhm versus 220 mOhm), resulting in reduced I²R losses. The higher self-resonant frequency (3.3 GHz versus 2.6 GHz) extends the usable frequency range. Both characteristics represent performance enhancements over the original part.