PRNF14FTD3K74 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD3K74 is a 3.74 kOhms ±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 RNF series and maintains active product status. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific performance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

PRNF14FTD3K74

Stackpole Electronics IncIn Stock: 989PRNF14FTD3K74 Datasheet

Current PartRFQ

RNF14FTD3K74

Stackpole Electronics IncIn Stock: 958RNF14FTD3K74 Datasheet

DirectRFQ

RNF14BTC3K74

Stackpole Electronics IncIn Stock: 4845RNF14BTC3K74 Datasheet

UpgradeRFQ

CMF553K7400FHEB

Vishay DaleIn Stock: 5328CMF553K7400FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PRNF14FTD3K74 are classified based on the following electrical and mechanical parameters:

Direct Equivalents maintain identical resistance value (3.74 kOhms), tolerance (±1%), power rating (0.25W), composition (metal film), package type (axial), and operating temperature range (-55°C ~ 155°C). These parts are interchangeable without circuit redesign.

Upgrade Substitutes maintain the same resistance value and package type but offer enhanced performance characteristics. Upgrades may include improved tolerance (±0.1% vs ±1%), higher power rating (0.5W vs 0.25W), lower temperature coefficient (±50ppm/°C vs ±100ppm/°C), or extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C). These parts are suitable for applications requiring tighter specifications or higher reliability margins.

Substitution eligibility is determined by:

• Identical resistance value (3.74 kOhms)
• Equal or tighter tolerance
• Equal or higher power rating
• Axial package configuration
• Operating temperature range compatibility with application requirements
• ROHS3 compliance and safety certifications

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (RNF14FTD3K74): Select this part when procurement requires the exact same specifications as PRNF14FTD3K74. Both parts are manufactured by Stackpole Electronics Inc, maintain ROHS3 compliance, and are functionally identical. Packaging differs (Tape & Reel vs Cut Tape), which may affect procurement and assembly processes.

Upgrade Option - Tolerance Enhancement (RNF14BTC3K74): This Stackpole Electronics Inc part provides tighter tolerance (±0.1% vs ±1%) and lower temperature coefficient (±50ppm/°C vs ±100ppm/°C) while maintaining the same power rating and operating temperature range. Select this part for applications requiring improved accuracy and stability. Higher inventory availability (4828 Pcs) supports procurement reliability.

Upgrade Option - Power Rating & Temperature Range (CMF553K7400FHEB): This Vishay Dale part doubles the power rating to 0.5W and extends the operating temperature range to 175°C maximum. It maintains ±1% tolerance and includes moisture-resistant features. Select this part for applications operating at elevated temperatures or requiring higher power dissipation capability. ROHS3 compliance is maintained.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and axial package configuration suitable for through-hole assembly.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD3K74 be replaced with RNF14BTC3K74? A: Yes. RNF14BTC3K74 is a direct upgrade with identical resistance, power rating, and operating temperature range. The tighter tolerance (±0.1% vs ±1%) and lower temperature coefficient (±50ppm/°C vs ±100ppm/°C) provide enhanced performance without circuit modification.

Q: Is CMF553K7400FHEB compatible with PRNF14FTD3K74? A: Yes, with application-specific considerations. CMF553K7400FHEB maintains the same resistance value and tolerance but provides double the power rating (0.5W vs 0.25W) and extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C). Physical dimensions differ slightly (0.090" Dia x 0.240" L vs 0.093" Dia x 0.250" L), which may affect board layout in space-constrained applications.

Q: What is the difference between Tape & Reel and Cut Tape packaging? A: Tape & Reel packaging is supplied on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape packaging is supplied in shorter tape segments, suitable for lower-volume applications or manual assembly. Both packaging types contain identical components.

Q: Can I use a substitute part with higher power rating in a circuit designed for 0.25W? A: Yes. A higher power rating (0.5W) is suitable for circuits designed for lower power ratings (0.25W). The component will operate within safe thermal limits. Physical size differences should be verified for board layout compatibility.

Q: Are all substitute parts ROHS3 compliant? A: Yes. PRNF14FTD3K74, RNF14FTD3K74, RNF14BTC3K74, and CMF553K7400FHEB are all ROHS3 compliant and REACH unaffected.

Q: Which substitute offers the best temperature stability? A: RNF14BTC3K74 and CMF553K7400FHEB both offer ±50ppm/°C temperature coefficient, compared to ±100ppm/°C for PRNF14FTD3K74 and RNF14FTD3K74. Selection depends on application temperature range requirements and performance specifications.