WNAR10FET Equivalent & Substitute Parts

Part Overview

The WNAR10FET is a 100 mOhms ±1% 0.5W through-hole axial wirewound resistor manufactured by Ohmite, currently in active production status. This non-inductive component is designed for precision current-sensing and low-resistance applications requiring stable performance across industrial temperature ranges. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

WNAR10FET

OhmiteIn Stock: 1040WNAR10FET Datasheet

Current PartRFQ

WHAR10FET

OhmiteIn Stock: 3804WHAR10FET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WNAR10FET are qualified based on matching the following critical parameters:

• Resistance value: 100 mOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Wirewound
• Package type: Axial
• Temperature coefficient: ±90ppm/°C
• Operating temperature range: -55°C to 150°C
• Physical dimensions: 0.100" Dia × 0.200" L
• Termination count: 2
• RoHS compliance: ROHS3 Compliant

The WHAR10FET qualifies as a parametric equivalent under these criteria. Packaging format differences (Tape & Reel versus Cut Tape) do not affect electrical or mechanical compatibility and represent alternative supply chain options.

Parameter Comparison

Engineering Selection Recommendations

Both WNAR10FET and WHAR10FET are active production components from Ohmite with identical electrical specifications and physical form factors. Selection between these parts is determined by packaging and supply chain requirements rather than electrical performance. The WNAR10FET is supplied in Tape & Reel format, suitable for automated assembly processes. The WHAR10FET is supplied in Cut Tape format, appropriate for manual assembly or lower-volume applications. Both components maintain ROHS3 compliance and are suitable for applications requiring precision low-resistance measurement across the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can WHAR10FET replace WNAR10FET in existing designs?

A: Yes. Both components share identical electrical parameters (100 mOhms ±1%, 0.5W, ±90ppm/°C) and physical dimensions (0.100" Dia × 0.200" L). Substitution is valid from an electrical and mechanical standpoint. Packaging format differences (Tape & Reel versus Cut Tape) affect supply chain and assembly processes only.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, optimized for high-speed automated assembly equipment. Cut Tape packaging supplies components on tape segments, suitable for manual assembly, lower-volume production, or component kits. Electrical and mechanical properties are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both WNAR10FET and WHAR10FET are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for industrial and commercial applications.

Q: What applications require 100 mOhms ±1% wirewound resistors?

A: These components are used in precision current-sensing circuits, power supply monitoring, battery management systems, and low-resistance measurement applications where stable performance and tight tolerance across temperature extremes (-55°C to 150°C) are required.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. Both components have identical axial package geometry and termination configuration, allowing direct substitution in PCB layouts without design modification.