WNAR50FET Equivalent & Substitute Parts

Part Overview

The WNAR50FET is a 500 mOhms ±1% 0.5W through-hole resistor manufactured by Ohmite, featuring axial wirewound construction with non-inductive characteristics. This component is designed for applications requiring precision low-resistance values with stable performance across industrial temperature ranges. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package and termination standards.

Substiute Parts

WNAR50FET

OhmiteIn Stock: 831WNAR50FET Datasheet

Current PartRFQ

WHAR50FET

OhmiteIn Stock: 5204WHAR50FET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WNAR50FET are identified based on strict equivalence of the following critical parameters: resistance value (500 mOhms), tolerance (±1%), power rating (0.5W / 1/2W), composition (wirewound), axial package configuration, physical dimensions (0.100" Dia x 0.200" L), temperature coefficient (±90ppm/°C), operating temperature range (-55°C ~ 150°C), and compliance certifications (RoHS3, REACH unaffected). The WHAR50FET qualifies as a parametric equivalent substitute, maintaining identical electrical and mechanical specifications while differing only in series designation and non-inductive feature classification.

Parameter Comparison

Engineering Selection Recommendations

Both WNAR50FET and WHAR50FET maintain Active product status with identical RoHS3 compliance and REACH unaffected certifications. Selection between these parts is based on series availability and inventory requirements. The WHAR50FET offers higher inventory availability (5123 Pcs) compared to WNAR50FET (767 Pcs), making it suitable for applications where supply continuity is prioritized. Both parts satisfy equivalent electrical and mechanical requirements for axial wirewound resistor applications requiring 500 mOhms ±1% at 0.5W power rating across the -55°C to 150°C operating range.

Frequently Asked Questions (FAQ)

Q: Can WHAR50FET directly replace WNAR50FET in existing designs? A: Yes. Both parts share identical resistance (500 mOhms), tolerance (±1%), power rating (0.5W), composition (wirewound), axial package, physical dimensions (0.100" Dia x 0.200" L), temperature coefficient (±90ppm/°C), and operating temperature range (-55°C ~ 150°C). No circuit redesign is required.

Q: What is the difference between WNAR50FET and WHAR50FET? A: The parts differ in series designation (WN vs. WH) and non-inductive feature specification. WNAR50FET explicitly specifies non-inductive construction, while WHAR50FET does not list this feature. All other electrical and mechanical parameters are equivalent.

Q: Are both parts RoHS3 compliant? A: Yes. Both WNAR50FET and WHAR50FET are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which part should be selected for new designs? A: Selection depends on availability and specific application requirements. WHAR50FET provides higher inventory availability. If non-inductive characteristics are critical to circuit performance, WNAR50FET is the specified choice.

Q: Are the physical dimensions identical? A: Yes. Both parts share identical dimensions of 0.100" Dia x 0.200" L (2.54mm x 5.08mm), ensuring mechanical compatibility in PCB layouts and through-hole applications.