0805-151K Equivalent & Substitute Parts

Part Overview

The 0805-151K is a 150 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 400 mA continuous current with a maximum DC resistance of 560 mOhm. This component is designed for surface mount applications in the 0805 (2012 metric) package format.

The 0805-151K has reached obsolete product status. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this inductor is specified in circuit designs.

Substiute Parts

0805-151K

API Delevan Inc.In Stock: 11820805-151K Datasheet

Current PartRFQ

CW201212-R15J

Bourns Inc.In Stock: 62202CW201212-R15J Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0805-151K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 150 nH (tolerance range acceptable within ±10% to ±5%)
• Current rating: 400 mA minimum
• Core type: Ceramic drum core, wirewound construction
• Shielding configuration: Unshielded
• Package format: 0805 (2012 metric) surface mount
• Operating temperature range: -40°C to 125°C minimum

Secondary Compatibility Factors:

• DC resistance (DCR): Must not exceed 670 mOhm to maintain circuit performance within acceptable limits
• Q factor at 250 MHz: 50 or higher
• Self resonant frequency: 920 MHz or higher

The CW201212-R15J from Bourns Inc. meets all primary matching criteria and operates within acceptable secondary parameters. This part maintains the same inductance specification, current rating, core material, and temperature range while offering improved product status (Active vs. Obsolete) and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The CW201212-R15J from Bourns Inc. is the qualified substitute for the obsolete 0805-151K. Selection is based on the following engineering factors:

Product Status Alignment: The 0805-151K is classified as obsolete, creating supply chain risk and limiting future availability. The CW201212-R15J maintains active product status with confirmed inventory of 62,120 pieces, ensuring long-term procurement viability.

Compliance and Certification: The CW201212-R15J achieves ROHS3 compliance and maintains REACH unaffected status, aligning with current regulatory requirements. The original 0805-151K does not meet RoHS compliance standards, making the substitute preferable for new designs and updated production runs.

Electrical Performance: Both parts deliver identical inductance (150 nH), current rating (400 mA), and Q factor (50 @ 250 MHz). The CW201212-R15J provides tighter inductance tolerance (±5% vs. ±10%) and higher self resonant frequency (950 MHz vs. 920 MHz), offering improved performance margins. The DCR increase from 560 mOhm to 670 mOhm remains within acceptable circuit operating parameters.

Physical and Mechanical Compatibility: Both inductors use identical 0805 (2012 metric) surface mount packages with matching operating temperature ranges (-40°C to 125°C). The CW201212-R15J provides standard tape and reel packaging, improving handling and assembly efficiency compared to the nonstandard packaging of the original part.

Frequently Asked Questions (FAQ)

Q: Can the CW201212-R15J directly replace the 0805-151K in existing circuit designs?

A: Yes. Both parts share identical inductance values (150 nH), current ratings (400 mA), core materials (ceramic), shielding configurations (unshielded), and operating temperature ranges (-40°C to 125°C). The 0805 (2012 metric) surface mount package format is identical, enabling direct PCB footprint compatibility.

Q: What is the impact of the increased DC resistance in the CW201212-R15J?

A: The CW201212-R15J has a DC resistance of 670 mOhm compared to the 0805-151K maximum of 560 mOhm. This 110 mOhm increase represents approximately 20% higher resistance. Circuit designers must verify that this resistance increase does not exceed the maximum allowable DCR specification for the application. In most RF and high-frequency applications, this variance remains within acceptable performance margins.

Q: Why does the CW201212-R15J have a higher self resonant frequency?

A: The CW201212-R15J exhibits a self resonant frequency of 950 MHz compared to 920 MHz for the 0805-151K. This 30 MHz increase indicates improved high-frequency performance characteristics. The higher self resonant frequency extends the usable frequency range and provides better performance stability in RF and microwave circuit applications.

Q: What are the packaging differences between these two parts?

A: The 0805-151K uses nonstandard packaging, while the CW201212-R15J is supplied in standard tape and reel (TR) format. Standard tape and reel packaging improves automated assembly compatibility, reduces handling damage risk, and streamlines inventory management. This represents a significant practical advantage for production environments.

Q: Is the tighter inductance tolerance of the CW201212-R15J beneficial?

A: The CW201212-R15J provides ±5% inductance tolerance compared to ±10% for the 0805-151K. Tighter tolerance reduces circuit performance variation and simplifies design margin calculations. This is particularly advantageous in precision RF circuits, impedance matching networks, and frequency-dependent applications where inductance accuracy directly affects circuit performance.

Q: Are there any compliance or regulatory considerations for substitution?

A: The CW201212-R15J achieves ROHS3 compliance, while the 0805-151K is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS compliance, the CW201212-R15J is the required choice. Both parts maintain REACH unaffected status and EAR99 export classification.