WRF2JT150R Equivalent & Substitute Parts

Part Overview

The WRF2JT150R is a 150 Ohm, 2W axial wirewound resistor manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring flame-proof and moisture-resistant characteristics in safety-critical circuits. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, repair, and redesign efforts.

Substiute Parts

WRF2JT150R

Stackpole Electronics IncIn Stock: 857WRF2JT150R Datasheet

Current PartRFQ

FKN100JR-73-1R8

YAGEOIn Stock: 744FKN100JR-73-1R8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WRF2JT150R is constrained by the following critical parameters:

• Resistance Value: 150 Ohms (±5% tolerance maintained)
• Power Dissipation: 2W minimum rating required
• Package Configuration: Axial through-hole form factor
• Composition: Wirewound construction
• Safety Features: Flame proof and moisture resistant characteristics
• Compliance: ROHS3 compliance and REACH unaffected status

The listed substitute FKN100JR-73-1R8 does not meet the resistance value requirement (1.8 Ohms vs. 150 Ohms specified) and operates at reduced power rating (1W vs. 2W). This part cannot serve as a functional equivalent for the WRF2JT150R in its intended application.

Parameter Comparison

Engineering Selection Recommendations

Based on the provided component data, the FKN100JR-73-1R8 cannot replace the WRF2JT150R due to fundamental electrical parameter mismatches. The substitute part exhibits:

• Resistance value of 1.8 Ohms instead of 150 Ohms (83× lower)
• Power rating of 1W instead of 2W (50% reduction)
• Operating temperature maximum of 155°C instead of 200°C (45°C reduction)

Both components maintain ROHS3 compliance and REACH unaffected status. However, electrical and thermal performance requirements cannot be satisfied by the listed substitute.

Frequently Asked Questions (FAQ)

Q: Can FKN100JR-73-1R8 be used in place of WRF2JT150R?

A: No. The substitute part has a resistance value of 1.8 Ohms compared to the required 150 Ohms, and a power rating of 1W versus the required 2W. These are fundamental incompatibilities that prevent functional substitution.

Q: What makes a resistor a valid substitute for WRF2JT150R?

A: A valid substitute must maintain 150 Ohm resistance at ±5% tolerance, support 2W power dissipation, use axial wirewound construction, provide flame-proof and moisture-resistant characteristics, and operate across the -55°C to 200°C temperature range.

Q: Are both parts RoHS compliant?

A: Yes. Both WRF2JT150R and FKN100JR-73-1R8 are ROHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements.

Q: Why is the WRF2JT150R listed as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Stackpole Electronics Inc. Existing inventory may be available through authorized distributors, but long-term sourcing should consider alternative active-status components with matching electrical specifications.