Equivalent & Substitute Parts for 14FPR020E

Part Overview

The 14FPR020E is a 20 mOhms ±1% 4.5W axial through-hole resistor manufactured by Ohmite, designed for current sense applications with non-inductive metal element construction. This component is classified as obsolete, making identification of suitable substitute parts essential 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

14FPR020E

OhmiteIn Stock: 92714FPR020E Datasheet

Current PartRFQ

17FPR020E

OhmiteIn Stock: 78817FPR020E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 14FPR020E is based on the following critical parameters that must remain constant or be exceeded:

• Resistance value: 20 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Element (exact match required)
• Features: Current Sense, Non-Inductive (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 200°C (exact match or wider range acceptable)
• Package Type: Axial (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The substitute part 17FPR020E meets all these criteria. The primary difference is an increased power rating of 7W compared to the original 4.5W, which represents a design enhancement suitable for applications requiring higher power dissipation capability.

Parameter Comparison

Engineering Selection Recommendations

The 17FPR020E is the direct substitute for the obsolete 14FPR020E. Both components are manufactured by Ohmite and maintain identical electrical specifications for resistance, tolerance, temperature coefficient, and operating temperature range. The 17FPR020E carries active product status, ensuring long-term availability and supply chain continuity.

The increased power rating of 7W in the 17FPR020E provides enhanced thermal performance compared to the 4.5W rating of the original part. This upgrade is electrically transparent to the circuit and does not introduce compatibility issues. Both parts maintain ROHS3 compliance and identical non-inductive metal element construction suitable for precision current sensing applications.

Physical dimensions differ between the two parts due to the increased power rating. The 17FPR020E measures 0.375" diameter by 1.500" length compared to the 14FPR020E at 0.335" diameter by 1.059" length. PCB layout and mechanical clearance must be verified during integration.

Frequently Asked Questions (FAQ)

Q: Can the 17FPR020E be used as a direct replacement for the 14FPR020E?

A: Yes. The 17FPR020E is electrically equivalent to the 14FPR020E across all critical parameters: resistance value, tolerance, temperature coefficient, and operating temperature range. The higher power rating represents an enhancement that does not compromise circuit functionality.

Q: What is the primary reason for substitution?

A: The 14FPR020E is classified as obsolete. The 17FPR020E is an active product from the same manufacturer with identical electrical characteristics, ensuring continued availability and supply chain reliability.

Q: Are there physical dimension differences between these parts?

A: Yes. The 17FPR020E is physically larger due to its increased 7W power rating. The substitute measures 0.375" diameter by 1.500" length versus 0.335" diameter by 1.059" length for the original. PCB layout verification is required before implementation.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 14FPR020E and 17FPR020E are ROHS3 compliant and carry identical ECCN and HTSUS classifications.

Q: Is the increased power rating of the 17FPR020E a concern for my application?

A: No. A higher power rating does not negatively affect circuit performance. The 7W rating of the 17FPR020E provides additional thermal margin compared to the 4.5W original specification.