CW201212-R68J Equivalent & Substitute Parts

Part Overview

The CW201212-R68J is a 680 nH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 190 mA with a DC resistance of 2.05Ohm in a 0805 (2012 Metric) surface mount package. This component is actively produced and ROHS3 compliant, designed for high-frequency applications requiring stable inductance characteristics across a wide operating temperature range of -40°C to 125°C. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

CW201212-R68J

Bourns Inc.In Stock: 1062CW201212-R68J Datasheet

Current PartRFQ

B82498F3681J000

EPCOS - TDK ElectronicsIn Stock: 2306B82498F3681J000 Datasheet

SimilarRFQ

LQW2BASR68J00L

Murata ElectronicsIn Stock: 2601LQW2BASR68J00L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CW201212-R68J are qualified based on the following critical parameters:

• Inductance value of 680 nH with ±5% tolerance
• Current rating of 190 mA minimum
• Surface mount configuration compatible with 0805 package footprint
• Unshielded construction
• Operating temperature range supporting -40°C to 125°C operation
• DC resistance within acceptable limits for the application (2.05Ohm reference)
• Self-resonant frequency suitable for high-frequency circuit operation
• ROHS3 compliance and MSL 1 rating

The identified substitutes maintain these core electrical and mechanical specifications while potentially varying in core material composition and exact DCR values within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

All three inductors meet the core electrical specifications for 680 nH inductance at 190 mA current rating with ROHS3 compliance and MSL 1 moisture sensitivity ratings. Selection between these parts should be based on the following considerations:

The CW201212-R68J (Bourns) operates within a -40°C to 125°C temperature range and provides a self-resonant frequency of 270 MHz with 2.05Ohm DCR.

The B82498F3681J000 (EPCOS - TDK) extends the lower operating temperature to -55°C and achieves a higher self-resonant frequency of 300 MHz with lower DCR of 1.7Ohm Max. This part carries AEC-Q200 automotive qualification.

The LQW2BASR68J00L (Murata) also supports -55°C to 125°C operation with 2.2Ohm Max DCR and a self-resonant frequency of 250 MHz. This part uses an air core construction versus ferrite or ceramic core materials in the alternatives.

Frequently Asked Questions (FAQ)

Q: Can B82498F3681J000 replace CW201212-R68J in all applications?

A: B82498F3681J000 maintains the same 680 nH inductance, ±5% tolerance, 190 mA current rating, and Q factor at 50MHz. The lower DCR (1.7Ohm Max versus 2.05Ohm) and higher self-resonant frequency (300 MHz versus 270 MHz) may benefit circuits sensitive to resistance losses or operating at higher frequencies. The extended temperature range (-55°C to 125°C) provides additional margin for extreme environments. Verify that the nonstandard package designation does not conflict with PCB layout constraints.

Q: What are the differences between air core and ferrite/ceramic core inductors in this comparison?

A: The LQW2BASR68J00L uses air core construction, while CW201212-R68J uses ferrite core and B82498F3681J000 uses ceramic core. Core material affects DC resistance, self-resonant frequency, and frequency response characteristics. Air core inductors typically exhibit lower losses at very high frequencies but may have different temperature coefficients. Ferrite and ceramic cores provide more compact designs with controlled inductance values.

Q: Are there package compatibility concerns between these substitutes?

A: CW201212-R68J and LQW2BASR68J00L both use 0805 metric packages with similar footprints (2.10mm x 1.50mm and 2.09mm x 1.53mm respectively). B82498F3681J000 is designated as nonstandard but supplied in 0805 (2012 Metric) package format with slightly larger dimensions (2.30mm x 1.70mm). Verify PCB layout clearances and solder pad dimensions before substitution.

Q: Do all three parts meet the same compliance standards?

A: All three inductors are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. B82498F3681J000 additionally carries AEC-Q200 automotive qualification. All parts are classified as EAR99 for export control purposes and share the same HTSUS code 8504.50.8000.

Q: What is the significance of the Q factor value of 23 @ 50MHz?

A: The Q factor indicates the quality of the inductor at a specific frequency. All three parts maintain Q = 23 @ 50MHz, meaning they exhibit equivalent energy storage efficiency at this test frequency. This parameter is critical for RF and high-frequency circuit applications where signal loss must be minimized.