14FPR100E Equivalent & Substitute Parts

Part Overview

The 14FPR100E is a 100 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

14FPR100E

OhmiteIn Stock: 88514FPR100E Datasheet

Current PartRFQ

17FPR100E

OhmiteIn Stock: 108217FPR100E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 14FPR100E is determined by the following critical parameters:

• Resistance value: 100 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)
• RoHS Compliance: ROHS3 (regulatory requirement)

The 17FPR100E qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary difference is an increased power rating (7W versus 4.5W), which represents an enhancement rather than a limitation for this application.

Parameter Comparison

Engineering Selection Recommendations

The 17FPR100E is the recommended substitute for the obsolete 14FPR100E. Both parts are manufactured by Ohmite and maintain identical electrical specifications including resistance value, tolerance, temperature coefficient, and operating temperature range. The 17FPR100E carries active product status, ensuring long-term availability and supply chain continuity.

The increased power rating of the 17FPR100E (7W versus 4.5W) provides enhanced thermal margin in current sense applications without affecting electrical performance. The slightly larger physical dimensions (0.375" diameter versus 0.335" diameter, and 1.500" length versus 1.059" length) must be verified for PCB layout compatibility in space-constrained designs.

Both parts maintain ROHS3 compliance and are suitable for applications requiring non-inductive metal element construction across the full -55°C to 200°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 17FPR100E be used as a direct replacement for the 14FPR100E?

A: Yes. The 17FPR100E meets all critical electrical parameters: 100 mOhms resistance, ±1% tolerance, ±50ppm/°C temperature coefficient, and -55°C to 200°C operating range. The higher power rating represents an improvement for thermal performance.

Q: What is the primary difference between these two parts?

A: The 17FPR100E has a higher power rating (7W versus 4.5W) and larger physical dimensions. The electrical specifications are identical.

Q: Are there any physical compatibility concerns?

A: The 17FPR100E is larger in both diameter and length. Verify that the increased dimensions (0.375" Dia x 1.500" L) fit within your PCB layout constraints before implementation.

Q: Why is the 14FPR100E obsolete?

A: The 14FPR100E is classified as obsolete by the manufacturer. The 17FPR100E is the active equivalent and recommended for new designs and ongoing procurement.

Q: Do both parts have the same RoHS compliance status?

A: Yes. Both the 14FPR100E and 17FPR100E are ROHS3 compliant.

Q: What applications are these parts suitable for?

A: Both parts are designed for current sense applications requiring non-inductive metal element construction, with particular suitability for precision measurement circuits operating across wide temperature ranges.