PRNF14FTD2K49 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD2K49 is a 2.49 kOhm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial configuration, manufactured by Stackpole Electronics Inc. This component is part of the active RNF series and is ROHS3 compliant. Substitute parts are identified to address inventory availability, packaging format requirements, or performance envelope upgrades while maintaining core electrical specifications.

Substiute Parts

PRNF14FTD2K49

Stackpole Electronics IncIn Stock: 1050PRNF14FTD2K49 Datasheet

Current PartRFQ

RNF14FTD2K49

Stackpole Electronics IncIn Stock: 42758RNF14FTD2K49 Datasheet

DirectRFQ

CMF552K4900FHEB

Vishay DaleIn Stock: 1552CMF552K4900FHEB Datasheet

UpgradeRFQ

CMF552K4900FKEA

Vishay DaleIn Stock: 2001CMF552K4900FKEA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic is based on the following allowed parameters: resistance value (2.49 kOhms), tolerance (±1%), composition (metal film), package type (axial), and compliance certifications (ROHS3). Substitute parts are grouped into two categories:

Direct Equivalent: RNF14FTD2K49 (Stackpole Electronics Inc) maintains identical electrical and mechanical specifications with variation only in packaging format (Cut Tape vs. Tape & Reel).

Upgrade Substitutes: CMF552K4900FHEB and CMF552K4900FKEA (Vishay Dale) provide identical resistance, tolerance, and composition with enhanced power rating (0.5W / 1/2W) and extended maximum operating temperature (175°C vs. 155°C). These parts are mechanically compatible in axial configuration and maintain ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: RNF14FTD2K49 is the direct equivalent to PRNF14FTD2K49, differing only in packaging format. Selection between Tape & Reel and Cut Tape depends on assembly process requirements and inventory management practices. Both maintain identical electrical performance and ROHS3 compliance.

For Performance Enhancement: CMF552K4900FHEB and CMF552K4900FKEA are suitable when circuit design permits higher power dissipation capability (0.5W vs. 0.25W) or extended operating temperature range (175°C vs. 155°C). These Vishay Dale components maintain all core electrical specifications and regulatory compliance. CMF552K4900FHEB offers improved temperature coefficient (±50ppm/°C) compared to the original specification (±100ppm/°C), providing enhanced stability in temperature-sensitive applications.

All substitute parts are active products with confirmed ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD2K49 be used as a direct replacement for PRNF14FTD2K49?

A: Yes. RNF14FTD2K49 is electrically and mechanically identical to PRNF14FTD2K49. The only difference is packaging format: PRNF14FTD2K49 is supplied in Tape & Reel format, while RNF14FTD2K49 is supplied in Cut Tape format. Both are manufactured by Stackpole Electronics Inc and maintain identical specifications.

Q: What are the advantages of using CMF552K4900FHEB or CMF552K4900FKEA?

A: Both Vishay Dale parts provide a higher power rating (0.5W vs. 0.25W) and extended maximum operating temperature (175°C vs. 155°C). CMF552K4900FHEB additionally offers a lower temperature coefficient (±50ppm/°C vs. ±100ppm/°C), which improves frequency stability in precision applications. These upgrades are beneficial in high-temperature environments or circuits with higher power dissipation requirements.

Q: Are the Vishay Dale substitutes mechanically compatible?

A: Yes. CMF552K4900FHEB and CMF552K4900FKEA maintain axial package configuration with dimensions of 0.090" Dia x 0.240" L (2.29mm x 6.10mm), compared to the original 0.093" Dia x 0.250" L (2.35mm x 6.35mm). These dimensional differences are within standard PCB layout tolerances for through-hole axial components and do not affect mechanical compatibility.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. PRNF14FTD2K49, RNF14FTD2K49, CMF552K4900FHEB, and CMF552K4900FKEA are all ROHS3 compliant and REACH unaffected. All parts carry EAR99 ECCN classification and HTSUS code 8533.21.0090.

Q: What is the difference between CMF552K4900FHEB and CMF552K4900FKEA?

A: Both parts are identical except for temperature coefficient specification. CMF552K4900FHEB has ±50ppm/°C, while CMF552K4900FKEA has ±100ppm/°C. Selection depends on application requirements for temperature stability. CMF552K4900FHEB is preferred for precision circuits where temperature coefficient performance is critical.