PRNF14FTD45K3 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD45K3 is a 45.3 kOhm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status with RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

PRNF14FTD45K3

Stackpole Electronics IncIn Stock: 1191PRNF14FTD45K3 Datasheet

Current PartRFQ

RNF14FTD45K3

Stackpole Electronics IncIn Stock: 17532RNF14FTD45K3 Datasheet

DirectRFQ

CMF5545K300FHEB

Vishay DaleIn Stock: 2068CMF5545K300FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PRNF14FTD45K3 is determined by the following criteria:

Direct Equivalent (Same Specifications): RNF14FTD45K3 maintains identical electrical and mechanical parameters. The only difference is packaging format (Cut Tape vs. Tape & Reel), which does not affect component functionality or performance.

Upgrade Substitute (Enhanced Specifications): CMF5545K300FHEB from Vishay Dale provides the same 45.3 kOhm resistance and ±1% tolerance but with increased power rating (0.5W vs. 0.25W), improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C), and extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C). This component is suitable for applications requiring higher power dissipation or stricter thermal performance.

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD45K3 (Direct Equivalent): Select this substitute when packaging format flexibility is acceptable. Both components maintain identical electrical performance and thermal characteristics. This option is suitable for applications with standard power dissipation requirements and standard operating temperature ranges.

CMF5545K300FHEB (Upgrade Substitute): Select this substitute for applications requiring enhanced thermal stability or higher power dissipation capability. The improved temperature coefficient (±50ppm/°C) provides better frequency stability in precision circuits. The extended operating temperature range (-55°C ~ 175°C) accommodates high-temperature environments. All components maintain RoHS3 and REACH compliance.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD45K3 be used as a direct replacement for PRNF14FTD45K3?

A: Yes. Both components have identical electrical specifications (45.3 kOhm, ±1%, 0.25W) and mechanical compatibility (axial package). The difference in packaging format (Cut Tape vs. Tape & Reel) does not affect circuit performance.

Q: When should CMF5545K300FHEB be selected over the direct equivalent?

A: CMF5545K300FHEB is selected when the application requires higher power dissipation (0.5W vs. 0.25W), improved temperature stability (±50ppm/°C vs. ±100ppm/°C), or operation in extended temperature environments up to 175°C.

Q: Are all substitute parts axial package configuration?

A: Yes. All listed substitutes maintain axial package type, ensuring mechanical compatibility with existing PCB layouts and through-hole assembly processes.

Q: Do substitute parts maintain regulatory compliance?

A: Yes. All substitute parts are RoHS3 compliant and REACH unaffected, matching the compliance status of the main component.

Q: What is the physical size difference between PRNF14FTD45K3 and CMF5545K300FHEB?

A: PRNF14FTD45K3 dimensions are 0.093" Dia x 0.250" L (2.35mm x 6.35mm). CMF5545K300FHEB dimensions are 0.090" Dia x 0.240" L (2.29mm x 6.10mm). Both fit standard axial resistor footprints with minimal dimensional variation.