WNB25RFET Equivalent & Substitute Parts

Part Overview

The WNB25RFET is a 25 Ohm, 1% tolerance, 1W through-hole axial wirewound resistor manufactured by Ohmite. This component is designed for applications requiring precision resistance with low inductance characteristics in a compact axial package. The part maintains Active product status with full ROHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range.

Substiute Parts

WNB25RFET

OhmiteIn Stock: 903WNB25RFET Datasheet

Current PartRFQ

WHB25RFET

OhmiteIn Stock: 2004WHB25RFET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WNB25RFET are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

• Resistance value: 25 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (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: 0.130" Dia x 0.276" L (exact match required)
• Compliance certifications: ROHS3 Compliant, REACH Unaffected (exact match required)

The WHB25RFET meets all electrical and mechanical equivalence criteria. The primary difference is packaging format: WNB25RFET is supplied in Tape & Reel (TR) format, while WHB25RFET is supplied in Cut Tape (CT) format. Both parts are from the Ohmite wirewound resistor family and maintain identical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

Both WNB25RFET and WHB25RFET are Active status components with identical electrical performance and mechanical specifications. Selection between these parts is determined by packaging requirements and supply chain considerations rather than technical performance.

The WNB25RFET in Tape & Reel format is suitable for high-volume automated assembly operations. The WHB25RFET in Cut Tape format accommodates lower-volume applications or manual assembly processes. Both parts maintain full ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can WHB25RFET replace WNB25RFET in my circuit design?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range. The difference is packaging format only.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, optimized for automated pick-and-place assembly. Cut Tape (CT) packaging supplies components on tape segments, suitable for manual assembly or lower-volume production.

Q: Are both parts RoHS compliant?

A: Yes. Both WNB25RFET and WHB25RFET are ROHS3 Compliant and REACH Unaffected.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts measure 0.130" diameter by 0.276" length (3.30mm x 7.00mm) and are compatible with identical PCB footprints.

Q: What is the temperature coefficient specification?

A: Both parts have a temperature coefficient of ±20ppm/°C, ensuring stable resistance performance across the -55°C to 150°C operating range.