14FPR075E Equivalent & Substitute Parts

Part Overview

The 14FPR075E is a 75 mOhms ±1% 4.5W through-hole axial resistor manufactured by Ohmite, designed for current sense applications with non-inductive metal element construction. This part is classified as obsolete, making identification of suitable substitutes necessary for ongoing design support and procurement planning. The part operates across a wide temperature range of -55°C to 200°C and maintains ROHS3 compliance.

Substiute Parts

14FPR075E

OhmiteIn Stock: 110314FPR075E Datasheet

Current PartRFQ

17FPR075E

OhmiteIn Stock: 81517FPR075E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 14FPR075E is based on the following critical parameters that must remain constant or compatible:

• Resistance value: 75 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Element (required for current sense application stability)
• Features: Current Sense, Non-Inductive (functional requirement)
• Temperature Coefficient: ±50ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 200°C (minimum requirement)
• Package Type: Axial (form factor requirement)

The 17FPR075E qualifies as a direct substitute because it maintains all critical electrical and mechanical parameters while offering increased power rating (7W versus 4.5W), which provides enhanced thermal margin and design flexibility.

Parameter Comparison

Engineering Selection Recommendations

The 17FPR075E is the manufacturer-recommended substitute for the obsolete 14FPR075E. Both parts are manufactured by Ohmite and maintain identical electrical specifications for resistance, tolerance, temperature coefficient, and operating temperature range. The 17FPR075E carries active product status, ensuring long-term availability and supply chain continuity.

The primary difference is the increased power rating (7W versus 4.5W) and corresponding physical dimensions. The 17FPR075E is larger in both diameter and length, which must be evaluated against available PCB space and thermal management requirements. Both parts maintain ROHS3 compliance and are suitable for current sense applications requiring non-inductive metal element construction.

Frequently Asked Questions (FAQ)

Q: Can the 17FPR075E be used as a direct replacement for the 14FPR075E?

A: Yes. The 17FPR075E maintains all critical electrical parameters including resistance value, tolerance, temperature coefficient, and operating temperature range. The increased power rating provides additional thermal margin without affecting circuit performance.

Q: What is the primary difference between these parts?

A: The 17FPR075E has a higher power rating (7W versus 4.5W) and larger physical dimensions (0.375" Dia x 1.500" L versus 0.335" Dia x 1.059" L). Both parts are electrically identical for current sense applications.

Q: Are there space constraints I should consider?

A: Yes. The 17FPR075E is larger in both diameter and length. Verify that the increased dimensions (9.53mm diameter and 38.10mm length) are compatible with your PCB layout and component placement requirements.

Q: Do both parts meet compliance requirements?

A: Yes. Both the 14FPR075E and 17FPR075E are ROHS3 compliant and suitable for applications requiring regulatory compliance in this category.

Q: Why is the 14FPR075E obsolete?

A: The 14FPR075E is classified as obsolete by the manufacturer. The 17FPR075E is the active product offering that provides equivalent functionality with improved thermal performance and ongoing supply availability.