PRNF14FTD511K Equivalent & Substitute Parts

Part Overview

The PRNF14FTD511K is a 511 kOhms ±1% 0.25W (1/4W) through-hole resistor manufactured by Stackpole Electronics Inc in the RNF series. This metal film axial resistor features flame retardant coating and safety characteristics, with an operating temperature range of -55°C to 155°C. The part is actively produced and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this resistor category.

Substiute Parts

PRNF14FTD511K

Stackpole Electronics IncIn Stock: 936PRNF14FTD511K Datasheet

Current PartRFQ

RNF14FTD511K

Stackpole Electronics IncIn Stock: 11089RNF14FTD511K Datasheet

DirectRFQ

CMF55511K00FHEB

Vishay DaleIn Stock: 4455CMF55511K00FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PRNF14FTD511K are classified based on the following electrical and mechanical parameters:

Direct Equivalent (Same Specifications):

• Resistance value: 511 kOhms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Composition: Metal Film
• Package: Axial
• Temperature coefficient and operating range compatibility

Upgrade Substitute (Enhanced Specifications):

• Resistance value: 511 kOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W) or higher
• Composition: Metal Film
• Package: Axial
• Enhanced temperature coefficient (lower ppm/°C) and extended operating temperature range

Substitution is permitted when the replacement part maintains or exceeds the electrical performance requirements and maintains mechanical compatibility with the axial package format.

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD511K (Direct Equivalent): This part is a direct substitute for PRNF14FTD511K, differing only in packaging format (Cut Tape versus Tape & Reel). Both parts are manufactured by Stackpole Electronics Inc, maintain identical electrical specifications, and are ROHS3 compliant with active product status. Selection is appropriate when packaging format change is acceptable.

CMF55511K00FHEB (Upgrade Substitute): This Vishay Dale part provides enhanced performance characteristics including doubled power rating (0.5W versus 0.25W), improved temperature coefficient (±50ppm/°C versus ±100ppm/°C), and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). The part maintains ROHS3 compliance and active product status. Selection is appropriate for applications requiring higher power dissipation capability or improved thermal stability. Physical dimensions are comparable (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L), maintaining axial package compatibility.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD511K replace PRNF14FTD511K in all applications? A: Yes. Both parts are manufactured by Stackpole Electronics Inc with identical electrical specifications (511 kOhms ±1%, 0.25W, metal film, axial package). The difference is packaging format only (Cut Tape versus Tape & Reel). Electrical performance and mechanical fit are equivalent.

Q: When should CMF55511K00FHEB be selected instead of the original part? A: CMF55511K00FHEB is selected when the application requires higher power dissipation (0.5W versus 0.25W), improved temperature stability (±50ppm/°C versus ±100ppm/°C), or operation at temperatures above 155°C up to 175°C. The axial package format remains compatible with standard through-hole PCB layouts.

Q: Are all substitute parts ROHS3 compliant? A: Yes. PRNF14FTD511K, RNF14FTD511K, and CMF55511K00FHEB are all ROHS3 compliant with active product status.

Q: What is the difference between the main part and direct equivalent packaging? A: PRNF14FTD511K is supplied in Tape & Reel (TR) format for automated assembly. RNF14FTD511K is supplied in Cut Tape (CT) format. Electrical and mechanical specifications are identical.

Q: Are physical dimensions compatible across all three parts? A: Yes. All three parts use the axial package format with comparable dimensions suitable for standard through-hole PCB applications. PRNF14FTD511K and RNF14FTD511K are 0.093" Dia x 0.250" L. CMF55511K00FHEB is 0.090" Dia x 0.240" L, representing a minor dimensional variation within acceptable tolerance for axial resistor mounting.