Equivalent & Substitute Parts for WHE100FET

Part Overview

The WHE100FET is a 100 Ohm, ±1% tolerance, 5W axial wirewound through-hole resistor manufactured by Ohmite. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter set, enabling component interchangeability in circuit designs where the primary part becomes unavailable or when alternative packaging or performance characteristics are required.

Substiute Parts

WHE100FET

OhmiteIn Stock: 692WHE100FET Datasheet

Current PartRFQ

45F100E

OhmiteIn Stock: 177045F100E Datasheet

MFR RecommendedRFQ

WNE100FET

OhmiteIn Stock: 3139WNE100FET Datasheet

Parametric EquivalentRFQ

RS005100R0FE73

Vishay DaleIn Stock: 3144RS005100R0FE73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WHE100FET are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 100 Ohms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Number of terminations: 2

Mechanical Parameters (Must Match):

• Package/Case type: Axial
• Supplier device package: Axial

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Three substitute parts meet these criteria: 45F100E (Ohmite Ohmicone® 40 series), WNE100FET (Ohmite WN series with non-inductive construction), and RS005100R0FE73 (Vishay Dale RS series with moisture-resistant construction). Each maintains identical electrical specifications while offering variations in physical dimensions, packaging format, and specialized features.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain Active product status and full ROHS3 and REACH compliance, ensuring regulatory alignment with the original WHE100FET specification.

WNE100FET provides direct dimensional compatibility with identical physical footprint (0.295" Dia x 0.787" L) and identical operating temperature range (-55°C ~ 150°C). This part incorporates non-inductive construction, differentiating it from the standard WHE100FET wirewound design.

45F100E is supplied in Bulk packaging rather than Cut Tape format. Physical dimensions are larger (0.343" Dia x 0.937" L), requiring verification of PCB layout clearance. Operating temperature range is not specified in the provided data.

RS005100R0FE73 from Vishay Dale offers the widest operating temperature range (-65°C ~ 250°C) and includes moisture-resistant construction. Physical dimensions (0.312" Dia x 0.875" L) fall between the WHE100FET and 45F100E specifications, requiring board layout assessment.

Frequently Asked Questions (FAQ)

Q: Can WNE100FET be used as a direct replacement for WHE100FET?

A: Yes. Both parts share identical resistance (100 Ohms), tolerance (±1%), power rating (5W), temperature coefficient (±20ppm/°C), operating temperature range (-55°C ~ 150°C), and physical dimensions (0.295" Dia x 0.787" L). The primary difference is non-inductive construction in the WNE100FET, which may be beneficial in high-frequency applications.

Q: What are the dimensional differences between substitute parts?

A: WHE100FET and WNE100FET are identical at 0.295" Dia x 0.787" L. The 45F100E measures 0.343" Dia x 0.937" L, and RS005100R0FE73 measures 0.312" Dia x 0.875" L. Larger dimensions may require PCB layout modification.

Q: Does packaging format affect electrical performance?

A: No. Cut Tape (CT) and Bulk packaging formats do not affect electrical specifications. The difference is in component presentation and handling during assembly. 45F100E is supplied in Bulk format, while WHE100FET, WNE100FET, and RS005100R0FE73 are supplied in Cut Tape format.

Q: Which substitute part offers the highest temperature capability?

A: RS005100R0FE73 operates across -65°C ~ 250°C, exceeding the WHE100FET range of -55°C ~ 150°C. This extended range is relevant only if the application requires operation beyond the original specification.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All four parts (WHE100FET, 45F100E, WNE100FET, and RS005100R0FE73) are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for restricted substance use.

Q: What is the significance of moisture-resistant construction in RS005100R0FE73?

A: Moisture-resistant construction in the RS005100R0FE73 provides enhanced protection in humid or corrosive environments. This feature is not present in the standard WHE100FET or other Ohmite substitutes and should be selected only when environmental conditions warrant this specification.