WHB25RFET Equivalent & Substitute Parts

Part Overview

The WHB25RFET is a 25 Ohm, 1% tolerance, 1W axial wirewound through-hole resistor manufactured by Ohmite. This component is classified as Active product status and is suitable for applications requiring precision resistive elements in through-hole configurations. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

WHB25RFET

OhmiteIn Stock: 2004WHB25RFET Datasheet

Current PartRFQ

RS01A25R00FE70

Vishay DaleIn Stock: 2632RS01A25R00FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WHB25RFET is determined by the following criteria:

• Resistance value: 25 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (minimum requirement)

The RS01A25R00FE70 from Vishay Dale meets all substitution criteria within the allowed parameter specifications for this resistor category.

Parameter Comparison

Engineering Selection Recommendations

Both the WHB25RFET and RS01A25R00FE70 are Active product status components with ROHS3 compliance and REACH Unaffected designation. Selection between these parts is based on application-specific requirements:

The WHB25RFET operates within -55°C ~ 150°C, while the RS01A25R00FE70 extends to -65°C ~ 250°C. The RS01A25R00FE70 includes moisture-resistant features and accommodates wider temperature extremes. Physical dimensions differ; the WHB25RFET is shorter and wider in diameter, while the RS01A25R00FE70 is longer and narrower. PCB layout constraints and thermal environment requirements determine the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can RS01A25R00FE70 replace WHB25RFET in all applications?

A: Electrical substitution is valid when resistance (25 Ohms), tolerance (±1%), power rating (1W), and temperature coefficient (±20ppm/°C) requirements are met. Physical dimensions differ; verify PCB footprint compatibility and available board space before substitution.

Q: What is the difference in operating temperature range?

A: WHB25RFET operates from -55°C to 150°C. RS01A25R00FE70 operates from -65°C to 250°C. Select based on application thermal requirements.

Q: Are both parts RoHS compliant?

A: Both WHB25RFET and RS01A25R00FE70 are ROHS3 Compliant and REACH Unaffected.

Q: Do physical dimensions affect substitution?

A: Yes. WHB25RFET measures 0.130" Dia x 0.276" L, while RS01A25R00FE70 measures 0.094" Dia x 0.406" L. Verify PCB layout and mounting clearances before substitution.

Q: What is the moisture resistance feature on RS01A25R00FE70?

A: RS01A25R00FE70 includes moisture-resistant construction. This feature is not specified for WHB25RFET. Select based on environmental exposure requirements.