744760282C Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744760282C is a 820 nH unshielded drum core wirewound inductor rated for 180 mA with a maximum DC resistance of 3.9Ohm, packaged in 0805 (2.29mm x 1.70mm) surface mount configuration. This component is classified as Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

744760282C

Würth ElektronikIn Stock: 9042744760282C Datasheet

Current PartRFQ

CW201212-R82J

Bourns Inc.In Stock: 4963CW201212-R82J Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744760282C is determined by strict equivalence across the following critical parameters:

• Inductance value: 820 nH ±5% tolerance
• Current rating: 180 mA minimum
• Shielding configuration: Unshielded
• Core type: Drum core wirewound construction
• Operating temperature range: -40°C ~ 125°C minimum
• Mounting type: Surface mount
• Package classification: 0805 form factor
• Compliance: ROHS3 and REACH status alignment

The Bourns CW201212-R82J meets all substitution criteria. While core material differs (ferrite vs. ceramic), both configurations deliver equivalent inductance, current handling, and frequency characteristics within the specified test parameters. DC resistance variance (2.3Ohm vs. 3.9Ohm maximum) represents an improvement in electrical performance and remains within acceptable design margins for this component category.

Parameter Comparison

Engineering Selection Recommendations

Both the 744760282C and CW201212-R82J are Active product status components with full regulatory compliance. Selection between these parts should be based on:

Availability and supply chain requirements: The 744760282C maintains 9000 units in stock inventory, while the CW201212-R82J has 4901 units available.

DC resistance performance: The CW201212-R82J exhibits lower DC resistance (2.3Ohm vs. 3.9Ohm maximum), resulting in reduced power dissipation and improved thermal performance in current-limited applications.

Physical dimensions: The CW201212-R82J occupies a slightly smaller footprint (2.10mm x 1.50mm vs. 2.29mm x 1.70mm), which may provide layout advantages in space-constrained designs while maintaining 0805 package compatibility.

Both components satisfy identical electrical specifications for inductance, current rating, frequency response, and operating temperature range. ROHS3 and REACH compliance status is equivalent across both parts.

Frequently Asked Questions (FAQ)

Q: Can the CW201212-R82J directly replace the 744760282C in existing designs?

A: Yes. Both components share identical inductance (820 nH ±5%), current rating (180 mA), operating temperature range (-40°C ~ 125°C), and 0805 surface mount package classification. The lower DC resistance of the CW201212-R82J represents improved performance characteristics.

Q: What is the significance of the core material difference (ceramic vs. ferrite)?

A: Core material selection affects frequency response and thermal stability characteristics. Both ceramic and ferrite drum core configurations deliver equivalent inductance and Q factor at the specified test frequency (25 MHz and 50 MHz). The ferrite core in the CW201212-R82J provides a higher self-resonant frequency (230MHz vs. 215MHz), which may offer advantages in high-frequency applications.

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

A: Both components conform to 0805 (2012 Metric) package dimensions and surface mount assembly standards. The CW201212-R82J has a marginally smaller footprint (2.10mm x 1.50mm vs. 2.29mm x 1.70mm). PCB pad layouts designed for standard 0805 specifications will accommodate both parts without modification.

Q: Do both parts meet the same regulatory and compliance requirements?

A: Yes. Both the 744760282C and CW201212-R82J are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. ECCN and HTSUS classifications are identical.

Q: What is the impact of the DC resistance difference on circuit performance?

A: The CW201212-R82J exhibits 41% lower maximum DC resistance (2.3Ohm vs. 3.9Ohm). In applications where the inductor carries sustained current, this results in reduced I²R power dissipation and lower operating temperature. For signal-level or pulse applications with minimal average current, this difference has negligible impact.