RNF14FTC31K6 Equivalent & Substitute Parts

Part Overview

The RNF14FTC31K6 is a 31.6 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is part of the active RNF series and features flame retardant coating with safety certification. Substitute parts are identified based on matching resistance value, tolerance, power rating, and package type while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTC31K6

Stackpole Electronics IncIn Stock: 975RNF14FTC31K6 Datasheet

Current PartRFQ

RNF14DTC31K6

Stackpole Electronics IncIn Stock: 1262RNF14DTC31K6 Datasheet

UpgradeRFQ

CMF5531K600FHEB

Vishay DaleIn Stock: 4123CMF5531K600FHEB Datasheet

UpgradeRFQ

CMF5031K600FHEB

Vishay DaleIn Stock: 2609CMF5031K600FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC31K6 are qualified based on the following criteria:

Primary Matching Parameters:

• Resistance value: 31.6 kOhms (exact match required)
• Composition: Metal Film (required for electrical performance equivalence)
• Package: Axial (required for mechanical fit)
• Number of Terminations: 2 (required for circuit compatibility)

Allowable Variations:

• Tolerance: ±1% or tighter (±0.5% acceptable as upgrade)
• Power Rating: 0.25W or higher (0.5W acceptable as upgrade)
• Operating Temperature Range: -55°C minimum and 155°C or higher maximum
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) are interchangeable for component selection

Compliance Requirements:

• RoHS3 Compliant (mandatory)
• REACH Unaffected (maintained across all substitutes)

Parameter Comparison

Engineering Selection Recommendations

RNF14DTC31K6 (Stackpole Electronics Inc)

This substitute provides tighter tolerance (±0.5% versus ±1%) while maintaining identical power rating, temperature range, and physical dimensions. Both components are from the same manufacturer series (RNF) and share equivalent thermal and electrical characteristics. Selection is appropriate when improved tolerance performance is required without changing board layout or thermal design.

CMF5531K600FHEB (Vishay Dale)

This substitute offers increased power rating (0.5W versus 0.25W) and extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C). The component includes moisture-resistant features in addition to flame retardant coating. Physical dimensions are comparable (0.090" Dia x 0.240" L) with minimal variation. Selection is appropriate for applications requiring higher power dissipation capability or extended temperature operation.

CMF5031K600FHEB (Vishay Dale)

This substitute maintains the original 0.25W power rating and ±1% tolerance with extended operating temperature range (-55°C ~ 175°C). The component includes moisture-resistant features and is physically smaller (0.065" Dia x 0.150" L). Selection is appropriate for space-constrained applications where the reduced physical footprint is beneficial and thermal requirements remain within the 0.25W rating.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and active product status equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Can RNF14DTC31K6 be used as a direct replacement for RNF14FTC31K6?

A: Yes. Both components share identical resistance (31.6 kOhms), power rating (0.25W), operating temperature range (-55°C ~ 155°C), and physical dimensions (0.093" Dia x 0.250" L). The RNF14DTC31K6 provides tighter tolerance (±0.5% versus ±1%), making it functionally equivalent with improved precision.

Q: What are the physical dimension differences between substitute parts?

A: RNF14FTC31K6 and RNF14DTC31K6 are identical at 0.093" Dia x 0.250" L. CMF5531K600FHEB measures 0.090" Dia x 0.240" L (slightly smaller). CMF5031K600FHEB measures 0.065" Dia x 0.150" L (significantly smaller). Verify PCB layout and component spacing before selecting CMF5031K600FHEB for space-critical applications.

Q: Are the Vishay Dale CMF series parts compatible with the Stackpole RNF series?

A: Yes, for applications where resistance value, tolerance, power rating, and axial package type are the primary requirements. Both manufacturers produce metal film axial resistors with equivalent electrical performance at the specified parameters. Verify compliance certifications and thermal design margins for your specific application.

Q: Can CMF5531K600FHEB (0.5W) replace RNF14FTC31K6 (0.25W)?

A: Yes. The higher power rating (0.5W) is compatible with circuits designed for 0.25W components. The substitute will operate at lower thermal stress in the same application. Physical dimensions are comparable (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L), requiring minimal PCB layout adjustment.

Q: What is the impact of using CMF5031K600FHEB with its smaller physical size?

A: CMF5031K600FHEB (0.065" Dia x 0.150" L) is significantly smaller than the original part (0.093" Dia x 0.250" L). This substitute is suitable for space-constrained designs. Verify that PCB footprint, component spacing, and thermal dissipation paths accommodate the reduced physical dimensions.

Q: Do all substitute parts maintain the same compliance certifications?

A: Yes. All listed substitutes are ROHS3 Compliant and REACH Unaffected, matching the compliance status of RNF14FTC31K6. All components are active products from established manufacturers.