WLAR015FE Equivalent & Substitute Parts

Part Overview

The WLAR015FE is a 15 mOhms ±1% 0.5W wirewound axial resistor manufactured by Ohmite, designed for current sense applications requiring moisture resistance. This component is classified as Active product status with full RoHS3 compliance. Substitute parts are identified to provide alternative sourcing options while maintaining identical electrical and mechanical specifications, particularly when packaging format or inventory availability differs from the primary part number.

Substiute Parts

WLAR015FE

OhmiteIn Stock: 727WLAR015FE Datasheet

Current PartRFQ

WLAR015FET

OhmiteIn Stock: 1751WLAR015FET Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WLAR015FE is determined by strict equivalence across the following critical parameters:

• Resistance value: 15 mOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Wirewound
• Package configuration: Axial through-hole
• Physical dimensions: 0.100" Dia x 0.200" L (2.54mm x 5.08mm)
• Temperature coefficient: ±300ppm/°C
• Functional features: Current sense and moisture resistance capability

The primary distinction between the main part and its substitute relates to packaging format (bulk versus tape & reel) and associated moisture sensitivity level classification. Both parts maintain identical electrical performance and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both WLAR015FE and WLAR015FET are Active status components from Ohmite's WL series, maintaining full RoHS compliance and identical electrical specifications. Selection between these parts is determined by procurement and assembly requirements rather than functional performance:

• WLAR015FE is supplied in bulk packaging format, suitable for applications with lower volume requirements or manual assembly processes.
• WLAR015FET is supplied in tape & reel format, optimized for automated pick-and-place assembly operations and higher-volume production environments.

Both parts satisfy current sense applications requiring 15 mOhms resistance with ±1% tolerance and moisture-resistant wirewound construction. The moisture sensitivity level designation reflects packaging configuration differences and does not indicate functional performance variation.

Frequently Asked Questions (FAQ)

Q: Can WLAR015FET be used as a direct replacement for WLAR015FE in circuit design?

A: Yes. Both parts are electrically and mechanically identical, with matching resistance, tolerance, power rating, temperature coefficient, and physical dimensions. Substitution is valid from a functional standpoint.

Q: What is the difference between bulk and tape & reel packaging?

A: Bulk packaging (WLAR015FE) is used for manual handling and lower-volume applications. Tape & reel packaging (WLAR015FET) is formatted for automated assembly equipment and high-volume production. The component itself is identical.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS compliant. WLAR015FE carries RoHS3 designation, while WLAR015FET carries standard RoHS designation. Both meet environmental compliance requirements for their respective supply chains.

Q: Does moisture sensitivity level affect component performance?

A: Moisture sensitivity level (MSL) classification relates to packaging and storage conditions, not electrical performance. WLAR015FE lists MSL as Not Applicable due to bulk packaging, while WLAR015FET lists MSL 1 (Unlimited) due to tape & reel format. Both parts perform identically in circuit operation.

Q: Which part should be selected for new designs?

A: Selection depends on manufacturing process. For automated assembly, WLAR015FET (tape & reel) is standard. For manual assembly or lower volumes, WLAR015FE (bulk) is appropriate. Electrical performance is identical.