LVR05R3000FE73 Equivalent & Substitute Parts

Part Overview

The LVR05R3000FE73 is a 300 mOhms ±1% 5W axial wirewound resistor manufactured by Vishay Dale, designed for current sense applications with moisture-resistant construction. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across a wide temperature range of -65°C to 275°C and meets ROHS3 compliance requirements.

Substiute Parts

LVR05R3000FE73

Vishay DaleIn Stock: 807LVR05R3000FE73 Datasheet

Current PartRFQ

MR5FTR300

Stackpole Electronics IncIn Stock: 779MR5FTR300 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LVR05R3000FE73 is determined by the following critical parameters:

• Resistance value: 300 mOhms
• Tolerance: ±1%
• Power rating: 5W
• Package configuration: Axial
• Physical dimensions: 0.330" Dia x 0.925" L (8.38mm x 24.60mm)
• Termination count: 2
• Application features: Current Sense, Moisture Resistant
• Regulatory compliance: ROHS3 Compliant

The MR5FTR300 from Stackpole Electronics Inc qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. While the composition differs (metal foil versus wirewound), both technologies satisfy the specified resistance, tolerance, power, and dimensional requirements for this application category.

Parameter Comparison

Engineering Selection Recommendations

The MR5FTR300 is the qualified substitute for the obsolete LVR05R3000FE73. Both components meet ROHS3 compliance and share identical electrical specifications (300 mOhms, ±1%, 5W) and mechanical dimensions (0.330" Dia x 0.925" L). The MR5FTR300 maintains active product status, ensuring long-term availability and supply chain continuity.

The primary distinction is composition: the LVR05R3000FE73 uses wirewound construction while the MR5FTR300 employs metal foil technology. Both technologies satisfy current sense and moisture-resistant application requirements at the specified electrical ratings.

The operating temperature range of the MR5FTR300 (-55°C to 275°C) covers the upper portion of the original part's range (-65°C to 275°C). For applications requiring operation below -55°C, this difference must be evaluated against specific system requirements.

Frequently Asked Questions (FAQ)

Q: Can the MR5FTR300 directly replace the LVR05R3000FE73 in existing designs?

A: Yes. Both components share identical resistance (300 mOhms), tolerance (±1%), power rating (5W), axial package configuration, and physical dimensions (0.330" Dia x 0.925" L). The MR5FTR300 is electrically and mechanically compatible for direct substitution.

Q: What is the difference between wirewound and metal foil composition?

A: The LVR05R3000FE73 uses wirewound construction while the MR5FTR300 uses metal foil technology. Both compositions meet the specified electrical parameters and current sense application requirements. Composition selection depends on specific performance characteristics required by the application.

Q: Does the operating temperature range difference affect substitution?

A: The MR5FTR300 operates from -55°C to 275°C, while the original part operates from -65°C to 275°C. For applications requiring operation below -55°C, the lower temperature limit of the substitute must be evaluated against system specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the LVR05R3000FE73 and MR5FTR300 are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What packaging formats are available?

A: The LVR05R3000FE73 is supplied in Cut Tape (CT) format. The MR5FTR300 is supplied in Tape & Reel (TR) format. Packaging selection depends on procurement volume and assembly process requirements.

Q: Why is the original part classified as obsolete?

A: The LVR05R3000FE73 is no longer in active production. The MR5FTR300 provides equivalent functionality with active product status, ensuring continued availability and manufacturer support.