WHA15RFET Equivalent & Substitute Parts

Part Overview

The WHA15RFET is a 15 Ohm, ±1% tolerance, 0.5W through-hole axial wirewound resistor manufactured by Ohmite. This component is classified as Active and is suitable for applications requiring precision resistive elements in standard axial package configurations. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling component interchangeability in circuit designs where the primary part becomes unavailable or when alternative packaging formats are required.

Substiute Parts

WHA15RFET

OhmiteIn Stock: 1033WHA15RFET Datasheet

Current PartRFQ

WNA15RFET

OhmiteIn Stock: 1658WNA15RFET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WHA15RFET is determined by strict equivalence across the following critical parameters:

• Resistance value: 15 Ohms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Wirewound
• Package type: Axial
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 150°C
• Physical dimensions: 0.100" Dia x 0.200" L (2.54mm x 5.08mm)
• Termination count: 2

The WNA15RFET meets all these criteria and qualifies as a parametric equivalent. Differences in packaging format (Cut Tape vs. Tape & Reel) and series designation (WH vs. WN) do not affect electrical or mechanical compatibility. The WNA15RFET incorporates non-inductive construction, which represents an enhancement to the base specification without compromising substitutability.

Parameter Comparison

Engineering Selection Recommendations

Both the WHA15RFET and WNA15RFET are Active status components from Ohmite with full RoHS compliance. The WHA15RFET is supplied in Cut Tape packaging, suitable for lower-volume applications and manual assembly workflows. The WNA15RFET is supplied in Tape & Reel format, optimized for high-volume automated assembly processes. Selection between these parts should be based on procurement volume requirements and assembly methodology rather than electrical performance, as both components deliver identical functional specifications.

The WNA15RFET's non-inductive construction provides additional performance characteristics for applications sensitive to parasitic inductance, though this feature does not restrict its use in standard applications where the WHA15RFET would be specified.

Frequently Asked Questions (FAQ)

Q: Can WNA15RFET replace WHA15RFET in existing designs? A: Yes. Both components share identical electrical specifications (15 Ohms, ±1%, 0.5W, ±20ppm/°C, -55°C to 150°C operating range) and physical dimensions (0.100" Dia x 0.200" L). The difference in packaging format (Cut Tape vs. Tape & Reel) does not affect circuit performance.

Q: What is the primary difference between these two parts? A: The WHA15RFET uses standard wirewound construction and is packaged in Cut Tape format. The WNA15RFET uses non-inductive wirewound construction and is packaged in Tape & Reel format. Both maintain identical resistance, tolerance, power rating, and temperature characteristics.

Q: Are there any compliance differences between WHA15RFET and WNA15RFET? A: Both components are RoHS compliant. The WHA15RFET carries ROHS3 certification, while the WNA15RFET carries standard RoHS certification. Both meet regulatory requirements for electronic component use.

Q: Which part should be selected for high-volume production? A: The WNA15RFET in Tape & Reel packaging is optimized for automated assembly processes typical in high-volume manufacturing. The WHA15RFET in Cut Tape format is suitable for lower-volume or manual assembly applications.

Q: Do these parts have identical physical dimensions? A: Yes. Both components measure 0.100" diameter by 0.200" length (2.54mm x 5.08mm) and feature two axial terminations, ensuring mechanical compatibility in PCB layouts designed for either part number.