WNC75RFE Equivalent & Substitute Parts

Part Overview

The WNC75RFE is a 75 Ohm ±1% 2W axial wirewound resistor manufactured by Ohmite. This non-inductive through-hole component is designed for applications requiring precision resistance with low inductance characteristics. The part is currently discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. Alternative equivalent parts maintain identical electrical specifications while offering different packaging or series configurations.

Substiute Parts

WNC75RFE

OhmiteIn Stock: 698WNC75RFE Datasheet

Current PartRFQ

WNC75RFET

OhmiteIn Stock: 690WNC75RFET Datasheet

DirectRFQ

WHC75RFE

OhmiteIn Stock: 979WHC75RFE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WNC75RFE are qualified based on the following electrical and mechanical parameters:

• Resistance value: 75 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 2W (exact match required)
• Composition: Wirewound (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Operating temperature range: -55°C to 150°C (exact match required)
• Physical dimensions: 0.180" Dia x 0.449" L (exact match required)
• Compliance: ROHS3 Compliant (exact match required)

Substitutes are grouped into two categories: direct manufacturer equivalents with identical specifications and packaging, and parametric equivalents that maintain all electrical and mechanical parameters while differing in series designation or non-inductive feature specification.

Parameter Comparison

Engineering Selection Recommendations

WNC75RFET is the primary direct substitute for WNC75RFE. Both parts are manufactured by Ohmite with identical electrical specifications, temperature characteristics, and physical dimensions. WNC75RFET maintains active product status with current inventory availability, making it the preferred choice for new designs and production continuity. The packaging difference (Cut Tape vs. standard) does not affect electrical performance or mechanical compatibility.

WHC75RFE serves as a parametric equivalent when WNC75RFET availability is constrained. This part maintains all critical electrical parameters and physical dimensions. The difference lies in the series designation (WH vs. WN) and the absence of explicit non-inductive feature specification in the WHC75RFE documentation. Both parts are wirewound composition with identical temperature coefficients and operating ranges. WHC75RFE is suitable for applications where the non-inductive characteristic is not a critical design requirement.

All substitute parts maintain ROHS3 compliance and identical REACH and ECCN classifications, ensuring regulatory compatibility with the original WNC75RFE specification.

Frequently Asked Questions (FAQ)

Q: Can WNC75RFET be used as a direct replacement for WNC75RFE?

A: Yes. WNC75RFET is a direct manufacturer equivalent with identical electrical specifications (75 Ohms ±1%, 2W), temperature characteristics (±20ppm/°C, -55°C to 150°C), physical dimensions (0.180" Dia x 0.449" L), and non-inductive wirewound construction. The only difference is packaging format (Cut Tape vs. standard), which does not affect circuit performance or board compatibility.

Q: What is the difference between WNC75RFET and WHC75RFE?

A: Both parts share identical resistance, tolerance, power rating, temperature coefficient, operating range, and physical dimensions. The primary differences are series designation (WN vs. WH) and feature specification. WNC75RFET explicitly specifies non-inductive construction, while WHC75RFE documentation lists standard wirewound without explicit non-inductive designation. Both are wirewound composition. Select WHC75RFE only if non-inductive performance is not required for your application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. WNC75RFET and WHC75RFE both maintain ROHS3 compliance, matching the original WNC75RFE specification. All parts are REACH Unaffected and classified as EAR99 for export purposes.

Q: Do the substitute parts fit the same PCB footprint as WNC75RFE?

A: Yes. All substitute parts maintain identical axial package dimensions of 0.180" Dia x 0.449" L (4.57mm x 11.40mm), ensuring direct mechanical compatibility with existing PCB layouts designed for WNC75RFE.

Q: Which substitute should I select for new production?

A: WNC75RFET is the recommended choice for new production due to active product status and current inventory availability. It provides identical performance to the discontinued WNC75RFE with no design modifications required.