WHB2R0FET Equivalent & Substitute Parts

Part Overview

The WHB2R0FET is a 2 Ohm ±1% 1W axial wirewound through-hole resistor manufactured by Ohmite. This component is classified as Active product status with 911 units in current inventory. Equivalent and substitute parts are identified when component availability changes, supply chain disruptions occur, or design flexibility permits alternative packaging formats while maintaining electrical and mechanical compatibility.

Substiute Parts

WHB2R0FET

OhmiteIn Stock: 969WHB2R0FET Datasheet

Current PartRFQ

41F2R0E

OhmiteIn Stock: 104041F2R0E Datasheet

MFR RecommendedRFQ

ALSR012R000FE12

Vishay DaleIn Stock: 877ALSR012R000FE12 Datasheet

MFR RecommendedRFQ

RS01A2R000FE70

Vishay DaleIn Stock: 2897RS01A2R000FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WHB2R0FET are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 2 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Temperature coefficient: ±50ppm/°C
• Composition: Wirewound

Mechanical Parameters (Must Match):

• Package type: Axial through-hole
• Number of terminations: 2

Allowed Variations:

• Operating temperature range (substitute may exceed minimum specification)
• Physical dimensions (diameter and length may vary within axial package constraints)
• Packaging format (Tape & Reel, Bulk, Cut Tape)
• Manufacturer (different qualified suppliers)
• Moisture resistance features (additional feature acceptable)

All three substitute parts meet these criteria and are classified as direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

Primary Equivalent (Same Manufacturer): The 41F2R0E from Ohmite is the manufacturer-recommended equivalent. Both parts share the same manufacturer lineage and are ROHS3 compliant. The 41F2R0E offers an extended operating temperature range to 275°C, providing additional thermal margin for applications requiring higher temperature performance. Packaging format differs (Bulk vs. Tape & Reel), which may affect procurement and assembly processes.

Cross-Manufacturer Alternatives (Vishay Dale): The ALSR012R000FE12 and RS01A2R000FE70 are qualified substitutes from Vishay Dale. Both incorporate moisture-resistant construction and extended operating temperature ranges (-65°C to 250°C). These parts are ROHS3 compliant and REACH compliant. The RS01A2R000FE70 offers the highest current inventory (2877 units) and is available in Cut Tape format. The ALSR012R000FE12 is available in Bulk format.

Compliance Considerations: All substitute parts maintain ROHS3 compliance. The RS01A2R000FE70 and ALSR012R000FE12 provide REACH compliance documentation, whereas the 41F2R0E lists REACH status as Vendor Undefined. For applications requiring explicit REACH compliance, the Vishay Dale options are preferred.

Physical Dimension Compatibility: Substitute parts exhibit dimensional variations within the axial package category. PCB layout and mechanical clearance must accommodate the range of diameters (0.094" to 0.130") and lengths (0.276" to 0.437"). All parts maintain standard axial lead spacing compatible with through-hole assembly.

Frequently Asked Questions (FAQ)

Q: Can the 41F2R0E directly replace the WHB2R0FET in all applications? A: Yes, from an electrical standpoint. Both parts share identical resistance, tolerance, power rating, and temperature coefficient specifications. The 41F2R0E provides extended temperature capability to 275°C. Packaging format differs (Bulk vs. Tape & Reel), which may require procurement and assembly process adjustments.

Q: What is the difference between the Ohmite and Vishay Dale substitutes? A: The Ohmite 41F2R0E maintains manufacturer continuity. The Vishay Dale parts (ALSR012R000FE12 and RS01A2R000FE70) add moisture-resistant construction and provide REACH compliance documentation. All three meet the core electrical specifications of the WHB2R0FET.

Q: Are physical dimension differences significant? A: Physical dimensions vary across the substitute parts. The WHB2R0FET measures 0.130" diameter by 0.276" length, while substitutes range from 0.094" to 0.130" diameter and 0.276" to 0.437" length. PCB layout and mechanical clearance must be verified for each application. All parts maintain standard axial lead configuration.

Q: Which substitute offers the best inventory availability? A: The RS01A2R000FE70 from Vishay Dale has the highest current inventory at 2877 units. The 41F2R0E (Ohmite) has 1015 units, and the ALSR012R000FE12 (Vishay Dale) has 841 units.

Q: Do all substitutes meet RoHS requirements? A: Yes. The WHB2R0FET, 41F2R0E, ALSR012R000FE12, and RS01A2R000FE70 are all RoHS compliant. The WHB2R0FET, ALSR012R000FE12, and RS01A2R000FE70 are specifically ROHS3 compliant.

Q: What packaging formats are available? A: The WHB2R0FET is supplied in Tape & Reel format. The 41F2R0E is available in Bulk. The ALSR012R000FE12 is available in Bulk. The RS01A2R000FE70 is available in Cut Tape format. Packaging selection affects procurement, storage, and assembly processes.

Q: Are the Vishay Dale parts suitable for moisture-sensitive applications? A: The ALSR012R000FE12 and RS01A2R000FE70 incorporate moisture-resistant construction. The WHB2R0FET and 41F2R0E are standard composition without specific moisture-resistant features. For applications requiring moisture resistance, the Vishay Dale options are appropriate.