WNB51RFE Equivalent & Substitute Parts

Part Overview

The WNB51RFE is a 51 Ohm ±1% 1W through-hole resistor manufactured by Ohmite in the WN series. This axial wirewound component features non-inductive construction and operates across -55°C to 150°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across packaging configurations.

Substiute Parts

WNB51RFE

OhmiteIn Stock: 1097WNB51RFE Datasheet

Current PartRFQ

WNB51RFET

OhmiteIn Stock: 2777WNB51RFET Datasheet

DirectRFQ

WHB51RFE

OhmiteIn Stock: 1748WHB51RFE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WNB51RFE are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 51 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C ~ 150°C

Mechanical Parameters (Must Match):

• Package type: Axial
• Physical dimensions: 0.130" Dia x 0.276" L (3.30mm x 7.00mm)
• Number of terminations: 2

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Product Status: Active

Substitutes are differentiated by packaging configuration (Cut Tape vs. Bulk) and series designation (WN vs. WH), which do not affect electrical or mechanical compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—WNB51RFE, WNB51RFET, and WHB51RFE—are electrically and mechanically equivalent for circuit applications. Selection is determined by procurement and assembly requirements:

WNB51RFE: Standard packaging configuration. Suitable for general component procurement.

WNB51RFET: Cut Tape packaging. Optimized for automated pick-and-place assembly processes. Highest current inventory availability (2737 Pcs).

WHB51RFE: Bulk packaging. Suitable for high-volume manual assembly or reel-based automated processes. Different series designation (WH vs. WN) does not affect electrical performance.

All parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance.

Frequently Asked Questions (FAQ)

Q: Can WNB51RFET be used as a direct replacement for WNB51RFE?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging configuration: WNB51RFET is supplied in Cut Tape format, while WNB51RFE uses standard packaging. Circuit performance is unaffected.

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

A: The WN series (WNB51RFE, WNB51RFET) and WH series (WHB51RFE) are both Ohmite wirewound resistor lines with identical electrical specifications for this 51 Ohm 1W rating. Series designation reflects manufacturing line or product family classification and does not impact electrical or mechanical compatibility.

Q: Are all three parts ROHS3 compliant?

A: Yes. WNB51RFE, WNB51RFET, and WHB51RFE are all ROHS3 compliant and suitable for applications requiring regulatory compliance.

Q: Which packaging format should I select for automated assembly?

A: WNB51RFET (Cut Tape) is optimized for automated pick-and-place assembly. WHB51RFE (Bulk) is suitable for reel-based automated processes. WNB51RFE (Standard) is appropriate for manual or semi-automated assembly.

Q: Do these parts have identical physical dimensions?

A: Yes. All three parts share identical axial dimensions of 0.130" Dia x 0.276" L (3.30mm x 7.00mm) and are mechanically interchangeable in PCB layouts.

Q: What is the temperature operating range?

A: All three parts operate across -55°C to 150°C with a temperature coefficient of ±20ppm/°C, ensuring stable performance across industrial and extended temperature applications.