WNB250FE Equivalent & Substitute Parts

Part Overview

The WNB250FE is a 250 Ohms ±1% 1W through-hole resistor manufactured by Ohmite in the WN series. This axial wirewound resistor is designed for applications requiring non-inductive performance with tight tolerance specifications. The part is currently active in production with full ROHS3 compliance and REACH unaffected status. 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

WNB250FE

OhmiteIn Stock: 1136WNB250FE Datasheet

Current PartRFQ

WHB250FE

OhmiteIn Stock: 2011WHB250FE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The WHB250FE qualifies as a parametric equivalent to the WNB250FE based on the following matching electrical and mechanical specifications:

• Identical resistance value: 250 Ohms
• Identical tolerance: ±1%
• Identical power rating: 1W
• Identical composition: Wirewound
• Identical package type: Axial
• Identical temperature coefficient: ±20ppm/°C
• Identical operating temperature range: -55°C ~ 150°C
• Identical physical dimensions: 0.130" Dia x 0.276" L (3.30mm x 7.00mm)
• Identical number of terminations: 2
• Identical compliance certifications: ROHS3 Compliant, REACH Unaffected, EAR99

The primary difference between these parts is the series designation (WN versus WH) and packaging format (tape versus bulk). Both parts maintain full electrical and mechanical compatibility for direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the WNB250FE and WHB250FE are active production parts from Ohmite with identical electrical specifications and full regulatory compliance. Selection between these parts should be based on packaging and procurement requirements. The WNB250FE is supplied in tape packaging, while the WHB250FE is supplied in bulk packaging. Both parts meet ROHS3 compliance and REACH unaffected requirements, making them suitable for applications with environmental and regulatory constraints. The choice between series designations (WN versus WH) does not affect electrical performance or mechanical compatibility in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can WHB250FE be used as a direct replacement for WNB250FE in PCB assembly?

A: Yes. Both parts are identical in electrical specifications (250 Ohms ±1%, 1W wirewound), physical dimensions (0.130" Dia x 0.276" L), and operating characteristics (-55°C ~ 150°C). The difference in series designation and packaging format does not affect circuit functionality.

Q: What is the difference between the WN and WH series designations?

A: The series designation reflects internal Ohmite product line organization. Both WN and WH series 250 Ohm 1W axial wirewound resistors share identical electrical and mechanical parameters for this specific part number.

Q: Are there packaging format differences between WNB250FE and WHB250FE?

A: Yes. WNB250FE is supplied in tape packaging, while WHB250FE is supplied in bulk packaging. This affects procurement and handling but does not impact electrical performance or mechanical compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both WNB250FE and WHB250FE are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory requirements.

Q: Can these parts be used in high-temperature applications?

A: Yes. Both parts operate across the -55°C ~ 150°C temperature range with a temperature coefficient of ±20ppm/°C, making them suitable for extended temperature applications within these limits.