744761127C Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744761127C is a 27 nH unshielded drum core wirewound inductor rated for 600 mA with a maximum DC resistance of 200mOhm, packaged in 0603 (1608 Metric) surface mount format. This component is designed for high-frequency applications requiring low inductance values with controlled impedance characteristics. The part is currently in active production status with full RoHS3 and REACH compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance category.

Substiute Parts

744761127C

Würth ElektronikIn Stock: 4245744761127C Datasheet

Current PartRFQ

CW160808-27NJ

Bourns Inc.In Stock: 4032CW160808-27NJ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744761127C is determined by the following critical parameters:

• Inductance Value: 27 nH with ±5% tolerance
• Current Rating: Minimum 600 mA
• DC Resistance: Maximum 220mOhm (allowing for minor variation within acceptable operating margins)
• Package Format: 0603 (1608 Metric) surface mount
• Frequency Characteristics: Q factor at 250 MHz and self-resonant frequency at 2.8 GHz
• Operating Temperature: -40°C to 125°C range
• Compliance: RoHS3 and REACH requirements

The Bourns Inc. CW160808-27NJ meets these substitution criteria with matching inductance, current rating, frequency response, temperature range, and compliance certifications. The DCR specification of 220mOhm represents an acceptable variance within the functional requirements of this component category.

Parameter Comparison

Engineering Selection Recommendations

Both the 744761127C and CW160808-27NJ are active production components with identical RoHS3 and REACH compliance status. Selection between these parts should be based on:

• Availability: Current inventory levels and supply chain lead times
• Procurement Requirements: Preferred supplier relationships or qualification documentation
• Physical Dimensions: The CW160808-27NJ has slightly larger dimensions (1.65mm L x 1.05mm W vs. 1.60mm L x 1.05mm W) and greater seated height (1.20mm vs. 1.10mm), which may impact PCB layout constraints
• Core Material: The 744761127C uses ceramic core material while the CW160808-27NJ uses alumina core material, both suitable for the specified frequency range

Both parts maintain equivalent electrical performance within the specified operating parameters and are suitable for direct substitution in 0603 surface mount applications requiring 27 nH inductance at 600 mA.

Frequently Asked Questions (FAQ)

Q: Can the CW160808-27NJ be used as a direct replacement for the 744761127C?

A: Yes. Both parts share identical inductance values (27 nH ±5%), current ratings (600 mA), frequency characteristics (Q=35 @ 250MHz, SRF=2.8GHz), operating temperature range (-40°C to 125°C), and package format (0603 surface mount). The DCR difference of 20mOhm falls within acceptable operational margins for this component category.

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

A: The 744761127C specifies 200mOhm maximum DCR while the CW160808-27NJ specifies 220mOhm. This 10% variance represents the inherent tolerance in wirewound inductor manufacturing and does not affect functional compatibility in standard RF and high-frequency circuit applications.

Q: Are there physical placement considerations when substituting these parts?

A: Yes. The CW160808-27NJ is slightly larger in length (1.65mm vs. 1.60mm) and seated height (1.20mm vs. 1.10mm). Verify PCB layout clearances and component placement constraints before substitution, particularly in high-density designs.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the 744761127C and CW160808-27NJ are RoHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity ratings. They are suitable for equivalent applications requiring these certifications.

Q: What core material differences exist between these inductors?

A: The 744761127C uses a ceramic core while the CW160808-27NJ uses an alumina core. Both materials are suitable for unshielded drum core wirewound inductors in the 27 nH range and do not affect electrical performance within the specified frequency and temperature operating ranges.