744761122A Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744761122A is a 22 nH unshielded drum core wirewound inductor rated for 700 mA with a maximum DC resistance of 220 mOhm. This surface mount component in 0603 (1608 Metric) package is designed for high-frequency applications up to 3 GHz. The part is active in production and ROHS3 compliant, making it suitable for modern electronic assemblies requiring compact inductance solutions with controlled impedance characteristics.

Alternative parts are necessary when primary inventory is unavailable, when design requirements allow for minor parameter variations within acceptable tolerances, or when supply chain optimization requires qualified substitutes.

Substiute Parts

744761122A

Würth ElektronikIn Stock: 1414744761122A Datasheet

Current PartRFQ

CW160808-22NJ

Bourns Inc.In Stock: 6521CW160808-22NJ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. CW160808-22NJ qualifies as a direct substitute based on the following critical parameters:

• Inductance Value: Both parts specify 22 nH with ±5% tolerance, ensuring equivalent inductance performance
• Current Rating: Both rated for 700 mA continuous current
• Package: Both use 0603 (1608 Metric) surface mount package, ensuring mechanical and electrical compatibility
• Operating Temperature Range: Both operate across -40°C to 125°C
• Self Resonant Frequency: Both rated to 3 GHz, supporting identical frequency applications
• Shielding Configuration: Both are unshielded drum core wirewound designs
• Compliance: Both ROHS3 compliant and REACH unaffected

The DC resistance of the substitute (190 mOhm) is lower than the main part (220 mOhm maximum), which represents an improvement in performance characteristics while remaining within acceptable design margins for this component category.

Parameter Comparison

Engineering Selection Recommendations

Both parts are active products with equivalent electrical and mechanical specifications. The CW160808-22NJ substitute offers a lower DC resistance (190 mOhm versus 220 mOhm maximum), which reduces power dissipation and improves efficiency in current-carrying applications. Both components meet ROHS3 compliance requirements and are suitable for industrial and commercial applications across the specified temperature range.

Selection between these parts should be based on availability, lead time, and cost considerations, as the electrical performance characteristics are equivalent within the defined tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the CW160808-22NJ be used as a direct replacement for the 744761122A?

A: Yes. Both parts share identical inductance values (22 nH ±5%), current ratings (700 mA), package dimensions (0603/1608 Metric), and operating temperature ranges (-40°C to 125°C). The substitute has lower DC resistance, which is a performance advantage.

Q: What is the significance of the DC resistance difference between these parts?

A: The 744761122A specifies 220 mOhm maximum, while the CW160808-22NJ is rated at 190 mOhm. Lower DC resistance reduces resistive losses and heat generation during operation, improving overall circuit efficiency without affecting inductance or current rating specifications.

Q: Are both parts suitable for high-frequency applications?

A: Yes. Both components have a self-resonant frequency of 3 GHz and Q factors measured at 250 MHz, making them suitable for RF and high-frequency circuit designs within this frequency range.

Q: Do package dimensions differ between these parts?

A: Dimensions are nearly identical. The 744761122A measures 0.063" L × 0.041" W (1.60mm × 1.05mm) with 0.049" height, while the CW160808-22NJ measures 0.065" L × 0.041" W (1.65mm × 1.05mm) with 0.047" height. These minor variations do not affect PCB layout compatibility for standard 0603 footprints.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under the same HTSUS code (8504.50.8000), ensuring equivalent regulatory status for procurement and assembly.