WHA250FE Equivalent & Substitute Parts

Part Overview

The WHA250FE is a 250 Ohm ±1% 0.5W through-hole axial wirewound resistor manufactured by Ohmite. This component is classified as Active product status and is designed for applications requiring precision resistance with stable temperature characteristics across industrial and commercial operating ranges. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and compliance certifications align with the original component's functional requirements.

Substiute Parts

WHA250FE

OhmiteIn Stock: 815WHA250FE Datasheet

Current PartRFQ

WHA250FET

OhmiteIn Stock: 3186WHA250FET Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WHA250FE are identified based on strict equivalence of the following critical parameters:

• Resistance value: 250 Ohms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 150°C
• Package configuration: Axial through-hole
• Physical dimensions: 0.100" Dia x 0.200" L
• Number of terminations: 2

The WHA250FET qualifies as a direct substitute because it maintains all electrical specifications and mechanical compatibility with the WHA250FE while differing only in packaging format (Tape & Reel versus standard packaging) and the addition of non-inductive construction features.

Parameter Comparison

Engineering Selection Recommendations

Both the WHA250FE and WHA250FET are Active status components from Ohmite's WH series, ensuring ongoing manufacturer support and availability. Selection between these parts should be based on packaging requirements and supply chain considerations:

The WHA250FE is supplied in standard packaging format and maintains RoHS3 compliance certification. The WHA250FET is supplied in Tape & Reel format with RoHS compliance certification, offering advantages for automated assembly processes and high-volume production environments. Both components satisfy identical electrical and mechanical requirements for 250 Ohm ±1% 0.5W axial wirewound resistor applications.

Frequently Asked Questions (FAQ)

Q: Can WHA250FET be used as a direct replacement for WHA250FE in existing designs?

A: Yes. Both components share identical electrical specifications (250 Ohms ±1%, 0.5W power rating, ±20ppm/°C temperature coefficient) and mechanical compatibility (Axial package, 0.100" Dia x 0.200" L dimensions). The primary difference is packaging format: WHA250FET uses Tape & Reel packaging while WHA250FE uses standard packaging.

Q: What is the significance of the non-inductive feature in WHA250FET?

A: The WHA250FET is specified as non-inductive wirewound construction. This feature reduces parasitic inductance, making it suitable for high-frequency applications where inductive effects must be minimized. The WHA250FE does not specify this feature.

Q: Are there compliance differences between these parts?

A: Both parts are RoHS compliant. WHA250FE carries RoHS3 certification, while WHA250FET carries RoHS certification. Both meet environmental compliance requirements for industrial applications.

Q: Which part should be selected for automated assembly?

A: WHA250FET in Tape & Reel packaging is optimized for automated pick-and-place assembly processes. WHA250FE in standard packaging is suitable for manual assembly or applications where tape format is not required.

Q: Do these parts have identical temperature performance?

A: Yes. Both components operate across -55°C to 150°C with identical ±20ppm/°C temperature coefficient, ensuring equivalent thermal stability in the specified operating range.