WHDR50FET Equivalent & Substitute Parts

Part Overview

The WHDR50FET is a 500 mOhms ±1% 3W axial wirewound through-hole resistor manufactured by Ohmite. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design requirements necessitate alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

WHDR50FET

OhmiteIn Stock: 940WHDR50FET Datasheet

Current PartRFQ

43FR50E

OhmiteIn Stock: 93443FR50E Datasheet

MFR RecommendedRFQ

WNDR50FET

OhmiteIn Stock: 4357WNDR50FET Datasheet

Parametric EquivalentRFQ

ALSR03R5000FE12

Vishay DaleIn Stock: 993ALSR03R5000FE12 Datasheet

MFR RecommendedRFQ

RS02BR5000FE70

Vishay DaleIn Stock: 2670RS02BR5000FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WHDR50FET are qualified based on matching the following critical parameters: resistance value (500 mOhms), tolerance (±1%), power rating (3W), composition (wirewound), package type (axial), temperature coefficient (±90ppm/°C), and termination count (2). All identified substitutes maintain these core electrical and mechanical specifications, ensuring functional interchangeability in circuit applications. Variations in physical dimensions, operating temperature range, packaging format (Cut Tape vs. Bulk), and moisture resistance features are secondary considerations that do not affect primary substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and meet or exceed the compliance requirements of the WHDR50FET. The WNDR50FET (Ohmite) is the closest parametric equivalent, offering identical electrical specifications, operating temperature range, and RoHS3 compliance with Cut Tape packaging. The RS02BR5000FE70 and ALSR03R5000FE12 (Vishay Dale) provide extended operating temperature ranges (-65°C ~ 250°C) and moisture-resistant construction, suitable for applications requiring enhanced environmental performance. The 43FR50E (Ohmite) maintains electrical equivalence but is supplied in Bulk packaging format. Selection should be based on packaging requirements, inventory availability, and application-specific environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can WNDR50FET replace WHDR50FET directly? A: Yes. The WNDR50FET matches all critical electrical parameters (500 mOhms, ±1%, 3W, ±90ppm/°C) and operating temperature range (-55°C ~ 150°C). The primary difference is the non-inductive construction feature of the WNDR50FET, which does not affect standard resistive applications.

Q: What is the difference between Cut Tape and Bulk packaging? A: Cut Tape (CT) packaging provides individual component strips suitable for automated assembly equipment. Bulk packaging supplies loose components in larger quantities. Both formats contain identical electrical components; packaging selection depends on assembly process requirements.

Q: Are Vishay Dale parts compatible with Ohmite specifications? A: Yes. The RS02BR5000FE70 and ALSR03R5000FE12 meet all core electrical requirements (500 mOhms, ±1%, 3W, ±90ppm/°C) and provide extended operating temperature ranges. Physical dimensions vary slightly but do not affect circuit functionality in standard through-hole applications.

Q: Does the 43FR50E meet the same specifications? A: The 43FR50E matches all electrical parameters but does not specify an operating temperature range. It is supplied in Bulk packaging. Confirmation of operating temperature compatibility with your application is necessary before selection.

Q: What does ROHS3 compliance mean? A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All listed substitutes maintain ROHS3 or equivalent RoHS compliance.