RNF14FTC3K48 Equivalent & Substitute Parts

Part Overview

The RNF14FTC3K48 is a 3.48 kOhms ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-grade construction, designed for applications requiring precision resistance values with reliable performance across industrial temperature ranges. The part maintains Active product status with 1172 units in current inventory. Substitute parts are identified to address application requirements such as increased power dissipation capability or enhanced environmental performance while maintaining core electrical specifications.

Substiute Parts

RNF14FTC3K48

Stackpole Electronics IncIn Stock: 1263RNF14FTC3K48 Datasheet

Current PartRFQ

CMF553K4800FHEB

Vishay DaleIn Stock: 2704CMF553K4800FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC3K48 is determined by the following critical parameters:

• Resistance Value: Must be 3.48 kOhms
• Tolerance: Must be ±1%
• Composition: Must be Metal Film
• Package Type: Must be Axial
• Temperature Coefficient: Must be ±50ppm/°C
• Regulatory Compliance: Must maintain ROHS3 Compliant status

The identified substitute CMF553K4800FHEB meets all core electrical specifications while offering enhanced power dissipation (0.5W vs. 0.25W) and extended maximum operating temperature (-55°C ~ 175°C vs. -55°C ~ 155°C). Both components share identical resistance, tolerance, composition, and temperature coefficient characteristics, making them functionally interchangeable within their respective power ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTC3K48 and CMF553K4800FHEB maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. Selection between these components should be based on application power dissipation requirements and thermal environment constraints. The RNF14FTC3K48 is suitable for standard 1/4W applications within the -55°C to 155°C operating range. The CMF553K4800FHEB provides increased power handling capability (0.5W) and extended upper temperature rating (175°C maximum), making it appropriate for higher-dissipation circuits or elevated-temperature environments. Both components are REACH Unaffected and classified under ECCN EAR99, meeting standard export compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can CMF553K4800FHEB replace RNF14FTC3K48 in all applications?

A: CMF553K4800FHEB is electrically equivalent and physically compatible as an axial package. However, substitution suitability depends on circuit power dissipation requirements. If the circuit is designed for 1/4W operation, the 1/2W substitute will function correctly. Verify that board layout accommodates the substitute's physical dimensions (0.090" Dia x 0.240" L vs. 0.093" Dia x 0.250" L).

Q: What are the physical dimension differences?

A: RNF14FTC3K48 measures 0.093" diameter by 0.250" length (2.35mm x 6.35mm). CMF553K4800FHEB measures 0.090" diameter by 0.240" length (2.29mm x 6.10mm). Both are axial package format with two terminations. The substitute is slightly smaller in both dimensions.

Q: Are there temperature rating implications for substitution?

A: RNF14FTC3K48 operates to 155°C maximum; CMF553K4800FHEB operates to 175°C maximum. Both maintain ±50ppm/°C temperature coefficient. The substitute provides additional thermal margin for high-temperature applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 Compliant, REACH Unaffected, and classified as EAR99. Moisture Sensitivity Level is Not Applicable for both parts.

Q: What is the packaging difference between the two parts?

A: RNF14FTC3K48 is supplied in Tape & Reel (TR) packaging. CMF553K4800FHEB is supplied in Cut Tape (CT) packaging. Both are suitable for automated assembly processes with appropriate feeder compatibility.