PRNF14FTD249R Equivalent & Substitute Parts

Part Overview

The PRNF14FTD249R is a 249 Ohm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status and is RoHS3 compliant. Substitute parts may be required due to inventory constraints, packaging format changes, or application-specific performance requirements such as higher power ratings, improved temperature coefficients, or enhanced environmental protection.

Substiute Parts

PRNF14FTD249R

Stackpole Electronics IncIn Stock: 836PRNF14FTD249R Datasheet

Current PartRFQ

RNF14FTD249R

Stackpole Electronics IncIn Stock: 29701RNF14FTD249R Datasheet

DirectRFQ

CMF55249R00FHEB

Vishay DaleIn Stock: 8328CMF55249R00FHEB Datasheet

UpgradeRFQ

CPF1249R00BEEE6

Vishay DaleIn Stock: 2437CPF1249R00BEEE6 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Equivalent (Same Packaging Format): RNF14FTD249R maintains identical electrical specifications and axial package configuration as the main part, differing only in packaging format (Cut Tape vs. Tape & Reel).

Upgraded Substitutes (Enhanced Performance): CMF55249R00FHEB and CPF1249R00BEEE6 are classified as upgrades because they maintain the 249 Ohm resistance value and metal film composition while offering improved electrical characteristics:

• Higher power ratings (0.5W and 1W respectively)
• Superior temperature coefficients (±50ppm/°C and ±25ppm/°C)
• Extended operating temperature ranges
• Enhanced environmental protection features

All substitute parts maintain axial through-hole configuration, RoHS3 compliance, and 2-termination design, ensuring mechanical and regulatory compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: RNF14FTD249R is the primary equivalent, maintaining all electrical and mechanical specifications of PRNF14FTD249R. Selection between these parts depends on packaging format availability (Tape & Reel vs. Cut Tape) and inventory status.

For Upgraded Performance: CMF55249R00FHEB is suitable when higher power dissipation capacity (0.5W vs. 0.25W) is required or when improved temperature stability (±50ppm/°C) is beneficial. This part extends the operating temperature range to 175°C and includes moisture-resistant features.

For Maximum Performance: CPF1249R00BEEE6 provides the highest specification upgrade with 1W power rating, ±0.1% tolerance, ±25ppm/°C temperature coefficient, and extended operating range to 230°C. This part is appropriate for precision applications requiring superior stability and thermal performance.

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD249R be used as a direct replacement for PRNF14FTD249R? A: Yes. RNF14FTD249R is electrically and mechanically identical to PRNF14FTD249R. The only difference is packaging format (Cut Tape vs. Tape & Reel). Both parts are manufactured by Stackpole Electronics Inc and share identical specifications.

Q: What are the advantages of using CMF55249R00FHEB as a substitute? A: CMF55249R00FHEB offers doubled power rating (0.5W vs. 0.25W), improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C), extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C), and moisture-resistant features. These upgrades provide enhanced reliability in demanding thermal environments.

Q: When should CPF1249R00BEEE6 be selected? A: CPF1249R00BEEE6 is selected for precision applications requiring superior tolerance (±0.1% vs. ±1%), exceptional temperature stability (±25ppm/°C), and extreme temperature operation (-65°C to 230°C). The 1W power rating accommodates higher dissipation requirements.

Q: Are all substitute parts compatible with the original PCB layout? A: All substitute parts maintain axial through-hole configuration with identical termination count (2). Physical dimensions are comparable (0.090" to 0.093" diameter, 0.240" to 0.250" length), ensuring compatibility with standard PCB hole spacing and component placement.

Q: Do substitute parts maintain regulatory compliance? A: Yes. All substitute parts are RoHS3 compliant and REACH unaffected, matching the regulatory status of PRNF14FTD249R.

Q: What is the difference between the Stackpole and Vishay Dale options? A: Stackpole Electronics Inc manufactures PRNF14FTD249R and RNF14FTD249R with identical specifications. Vishay Dale manufactures CMF55249R00FHEB and CPF1249R00BEEE6 as upgraded alternatives with enhanced performance characteristics. Selection depends on application requirements and performance specifications needed.