RNF14FTD3K74 Equivalent & Substitute Parts

Part Overview

The RNF14FTD3K74 is a 3.74 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction suitable for general-purpose electronic applications. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts may be required due to inventory availability, packaging format preferences, or enhanced performance specifications such as improved tolerance or increased power rating.

Substiute Parts

RNF14FTD3K74

Stackpole Electronics IncIn Stock: 958RNF14FTD3K74 Datasheet

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RNF14BTC3K74

Stackpole Electronics IncIn Stock: 4845RNF14BTC3K74 Datasheet

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CMF553K7400FHEB

Vishay DaleIn Stock: 5328CMF553K7400FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTD3K74 is determined by the following critical parameters: resistance value (3.74 kOhms), composition (metal film), package type (axial), and compliance certifications (ROHS3, REACH unaffected). Substitute parts must maintain the same resistance value and axial package configuration. Tolerance, power rating, temperature coefficient, and operating temperature range may vary within acceptable engineering limits for the application. The identified substitute parts meet these core substitution criteria while offering variations in tolerance grade, power rating, and packaging format.

Parameter Comparison

Engineering Selection Recommendations

RNF14BTC3K74 serves as a direct performance upgrade within the Stackpole RNF series, offering improved tolerance specification (±0.1% versus ±1%) and reduced temperature coefficient (±50ppm/°C versus ±100ppm/°C) while maintaining identical power rating and operating temperature range. This substitute is suitable for applications requiring tighter resistance tolerance and improved thermal stability.

CMF553K7400FHEB from Vishay Dale provides increased power dissipation capability (0.5W versus 0.25W) with extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and additional moisture resistance feature. This substitute accommodates applications with higher power requirements or more demanding environmental conditions. All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility.

Frequently Asked Questions (FAQ)

Q: Can RNF14BTC3K74 be used as a direct replacement for RNF14FTD3K74?

A: Yes. Both parts share identical resistance value (3.74 kOhms), power rating (0.25W), operating temperature range (-55°C ~ 155°C), and axial package configuration. RNF14BTC3K74 offers superior tolerance (±0.1%) and lower temperature coefficient (±50ppm/°C), making it functionally compatible and performance-enhanced for the same application space.

Q: What are the differences between RNF14FTD3K74 and CMF553K7400FHEB?

A: Both maintain the same 3.74 kOhms resistance and ±1% tolerance. CMF553K7400FHEB provides doubled power rating (0.5W versus 0.25W), extended maximum operating temperature (175°C versus 155°C), and moisture resistance feature. Physical dimensions differ slightly (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L). Selection depends on thermal dissipation and environmental exposure requirements.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) packaging formats are logistics and assembly considerations only. Electrical specifications, performance characteristics, and component functionality remain identical regardless of packaging format.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RNF14FTD3K74, RNF14BTC3K74, and CMF553K7400FHEB are all ROHS3 compliant and REACH unaffected, ensuring regulatory compatibility across all three options.

Q: Which substitute should be selected for high-precision applications?

A: RNF14BTC3K74 is the appropriate selection for applications requiring tight tolerance control, offering ±0.1% tolerance specification compared to ±1% for both RNF14FTD3K74 and CMF553K7400FHEB.