WHAR50FE Equivalent & Substitute Parts

Part Overview

The WHAR50FE is a 500 mOhms ±1% wirewound axial resistor rated for 0.5W (1/2W) continuous power dissipation, manufactured by Ohmite. This component is designed for through-hole applications requiring precision current-sensing or low-impedance load applications across industrial and commercial temperature ranges (-55°C to 150°C). The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance are maintained across packaging variants.

Substiute Parts

WHAR50FE

OhmiteIn Stock: 957WHAR50FE Datasheet

Current PartRFQ

WHAR50FET

OhmiteIn Stock: 5204WHAR50FET Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WHAR50FE is determined by strict equivalence across the following critical parameters:

• Resistance value: 500 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Wirewound (exact match required)
• Temperature coefficient: ±90ppm/°C (exact match required)
• Operating temperature range: -55°C to 150°C (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Physical dimensions: 0.100" Dia × 0.200" L (exact match required)
• Regulatory compliance: RoHS3 Compliant, REACH Unaffected (exact match required)

Substitute parts may differ only in packaging format (tape reel vs. bulk) while maintaining identical electrical and mechanical specifications. Series designation (WH) and manufacturer (Ohmite) remain constant across all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both WHAR50FE and WHAR50FET are Active products manufactured by Ohmite with identical electrical and mechanical specifications. Selection between these parts is determined by procurement and assembly requirements:

WHAR50FE is suitable for applications requiring standard bulk packaging formats with established supply chain integration.

WHAR50FET is suitable for automated assembly processes utilizing cut tape packaging, offering compatibility with pick-and-place equipment and tape-fed component handling systems.

Both parts maintain full RoHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. Interchangeability is confirmed at the circuit level, with substitution limited only by packaging format compatibility with assembly infrastructure.

Frequently Asked Questions (FAQ)

Q: Can WHAR50FET replace WHAR50FE in existing designs?

A: Yes. Both parts are electrically and mechanically identical. Substitution is valid provided the assembly process accommodates cut tape packaging format.

Q: What is the primary difference between WHAR50FE and WHAR50FET?

A: The parts differ only in packaging format. WHAR50FE uses standard packaging, while WHAR50FET is supplied in cut tape (CT) format for automated assembly systems.

Q: Are there any temperature or power rating differences between these substitutes?

A: No. Both parts operate across -55°C to 150°C and are rated for 0.5W continuous power dissipation with identical ±90ppm/°C temperature coefficient.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both WHAR50FE and WHAR50FET are RoHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: Can these parts be used interchangeably in manual assembly applications?

A: WHAR50FE is recommended for manual assembly due to standard packaging. WHAR50FET cut tape format is optimized for automated pick-and-place systems but may be manually assembled if tape dispensing equipment is available.

Q: What tolerance should be specified for precision current-sensing applications?

A: Both parts maintain ±1% tolerance, suitable for precision current-sensing circuits where low-impedance accuracy is critical.