RNF14BTD3K32 Equivalent & Substitute Parts

Part Overview

The RNF14BTD3K32 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 specifications and flame retardant construction. The part is currently Active in product status with 1046 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to availability constraints, design optimization, or supply chain considerations.

Substiute Parts

RNF14BTD3K32

Stackpole Electronics IncIn Stock: 1140RNF14BTD3K32 Datasheet

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CMF553K3200BEEB

Vishay DaleIn Stock: 2605CMF553K3200BEEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CMF553K3200BEEB from Vishay Dale qualifies as a substitute based on the following critical parameters:

Electrical equivalence is established through matching resistance value (3.32 kOhms) and tolerance specification (±0.1%). Both components utilize metal film composition with axial through-hole packaging, ensuring mechanical and electrical compatibility in circuit board layouts.

The substitute part maintains compliance with RoHS3 and REACH requirements, matching the regulatory status of the primary component. Both parts feature flame retardant coating and safety construction appropriate for industrial applications.

Mechanical compatibility is confirmed through axial package standardization. While dimensional variations exist (primary: 0.093" Dia x 0.250" L; substitute: 0.090" Dia x 0.240" L), these fall within acceptable tolerances for axial component mounting and do not affect circuit board layout or assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Selection between RNF14BTD3K32 and CMF553K3200BEEB is determined by application requirements and supply availability.

The RNF14BTD3K32 is the specified component for designs requiring the 0.25W power rating. This part maintains Active product status with established supply inventory.

The CMF553K3200BEEB serves as a functional substitute when the primary part is unavailable. The substitute provides superior performance characteristics: higher power rating (0.5W vs 0.25W), extended operating temperature range (-55°C to 175°C vs -55°C to 155°C), and improved temperature coefficient (±25ppm/°C vs ±100ppm/°C). The substitute also includes moisture resistance features not present in the primary component.

Both components satisfy ROHS3 and REACH compliance requirements. Axial package standardization ensures mechanical compatibility without circuit board redesign. The substitute's higher power rating and improved thermal stability provide design margin in applications where the primary component operates near maximum ratings.

Frequently Asked Questions (FAQ)

Q: Can CMF553K3200BEEB directly replace RNF14BTD3K32 in existing designs?

A: Yes. Both components share identical resistance value (3.32 kOhms), tolerance (±0.1%), composition (metal film), and axial package type. Mechanical dimensions are comparable within standard axial component tolerances. No circuit board layout modifications are required.

Q: What are the key differences between these parts?

A: The primary differences are power rating (0.25W vs 0.5W), operating temperature range (-55°C to 155°C vs -55°C to 175°C), temperature coefficient (±100ppm/°C vs ±25ppm/°C), and packaging format (Tape & Reel vs Cut Tape). The substitute includes moisture resistance features.

Q: Which part should be selected for new designs?

A: Specify RNF14BTD3K32 if the 0.25W power rating matches application requirements and supply is available. For applications requiring extended temperature range, improved temperature stability, or moisture resistance, CMF553K3200BEEB is the appropriate selection.

Q: Are there compliance or regulatory differences?

A: Both components are ROHS3 Compliant and REACH Unaffected. No regulatory distinction exists between the two parts.

Q: Does the higher power rating of the substitute affect circuit performance?

A: No. The substitute's 0.5W rating provides additional thermal margin without affecting electrical performance. Resistance value and tolerance remain identical, ensuring circuit behavior is unchanged.

Q: What packaging considerations apply to substitution?

A: The primary component is supplied in Tape & Reel format; the substitute is supplied in Cut Tape format. Both are standard axial component packaging suitable for automated assembly. Procurement and handling procedures may differ based on packaging format.