RNF14BTC3K32 Equivalent & Substitute Parts

Part Overview

The RNF14BTC3K32 is a 3.32 kOhms ±0.1% metal film axial resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component is designed for precision applications requiring tight tolerance and stable performance across industrial temperature ranges. The part is currently Active in product status with 1014 units in stock. Substitute parts are identified when equivalent resistance values, tolerance specifications, and package configurations are required for design flexibility, supply chain optimization, or performance enhancement within allowable electrical and mechanical parameters.

Substiute Parts

RNF14BTC3K32

Stackpole Electronics IncIn Stock: 1068RNF14BTC3K32 Datasheet

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CMF553K3200BEEB

Vishay DaleIn Stock: 2605CMF553K3200BEEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RNF14BTC3K32 is permissible when the following criteria are met:

Resistance value must remain 3.32 kOhms with tolerance maintained at ±0.1%. The package configuration must be Axial to ensure mechanical and electrical compatibility with existing PCB layouts. Composition must be Metal Film to preserve frequency response and noise characteristics. Power rating may be equal to or greater than 0.25W, as higher power-rated components provide backward compatibility. Operating temperature range must encompass or exceed the original specification of -55°C ~ 155°C. RoHS3 compliance and REACH Unaffected status must be maintained for regulatory alignment.

The CMF553K3200BEEB from Vishay Dale qualifies as a substitute based on matching resistance, tolerance, axial package, metal film composition, and regulatory compliance. The higher power rating (0.5W vs 0.25W) and improved temperature coefficient (±25ppm/°C vs ±50ppm/°C) represent performance enhancements within the allowable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14BTC3K32 and CMF553K3200BEEB maintain Active product status and full regulatory compliance under ROHS3 and REACH standards. The CMF553K3200BEEB offers extended operating temperature capability to 175°C and improved temperature stability at ±25ppm/°C compared to the original specification. The higher power dissipation rating of 0.5W provides additional thermal margin in applications where the 0.25W rating approaches design limits. Selection between these components should be based on application thermal requirements, packaging format availability (Tape & Reel versus Cut Tape), and inventory logistics rather than electrical performance, as both meet the core functional specifications.

Frequently Asked Questions (FAQ)

Q: Can the CMF553K3200BEEB replace the RNF14BTC3K32 in existing designs?

A: Yes. Both components share identical resistance values (3.32 kOhms), tolerance (±0.1%), composition (Metal Film), and axial package configuration. The substitute part meets or exceeds all electrical specifications of the original component.

Q: What is the significance of the higher power rating on the substitute part?

A: The CMF553K3200BEEB is rated at 0.5W compared to the RNF14BTC3K32 at 0.25W. This higher rating indicates greater thermal dissipation capability and provides design margin in applications approaching the original power limit. The substitute remains fully compatible with circuits designed for 0.25W operation.

Q: How do the temperature coefficients differ between these parts?

A: The RNF14BTC3K32 has a temperature coefficient of ±50ppm/°C, while the CMF553K3200BEEB is specified at ±25ppm/°C. The lower coefficient on the substitute indicates superior frequency stability and reduced resistance drift across the operating temperature range. Both values are within acceptable ranges for precision applications.

Q: Are there packaging differences between these components?

A: The RNF14BTC3K32 is supplied in Tape & Reel (TR) format, while the CMF553K3200BEEB is available in Cut Tape (CT) format. Both are axial through-hole components with identical mechanical dimensions and PCB mounting compatibility. Packaging format selection depends on assembly process requirements and inventory management preferences.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the RNF14BTC3K32 and CMF553K3200BEEB are ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations for electronic components.