RNF14FTC113K Equivalent & Substitute Parts

Part Overview

The RNF14FTC113K is a 113 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 tight tolerance specifications. The part maintains Active product status with 886 units in current inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained while accommodating design flexibility, supply chain optimization, or enhanced operational margins.

Substiute Parts

RNF14FTC113K

Stackpole Electronics IncIn Stock: 952RNF14FTC113K Datasheet

Current PartRFQ

CMF55113K00FHEB

Vishay DaleIn Stock: 2116CMF55113K00FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC113K is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 113 kOhms (exact match required)
• Tolerance: ±1% (equal or tighter tolerance acceptable)
• Temperature coefficient: ±50ppm/°C (equal or better stability required)
• Composition: Metal Film (maintains precision and stability characteristics)

Mechanical Compatibility Requirements:

• Package type: Axial (form factor compatibility with PCB layouts)
• Number of terminations: 2 (standard through-hole configuration)

Regulatory & Compliance Requirements:

• RoHS3 Compliant status (mandatory for regulated applications)
• REACH Unaffected classification (environmental compliance maintained)

Power Rating Consideration: The substitute part CMF55113K00FHEB is rated at 0.5W (1/2W), which exceeds the original 0.25W specification. This represents an upgrade path suitable for applications where enhanced thermal margin or increased power dissipation capability is beneficial or required.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (RNF14FTC113K): Select the RNF14FTC113K when the design specification explicitly requires a 0.25W power rating and the thermal environment supports this rating. This part is Active status with established supply availability and meets all ROHS3 and REACH compliance requirements.

Substitute Selection (CMF55113K00FHEB): The CMF55113K00FHEB is suitable as a substitute when:

• The circuit design can accommodate a 0.5W rated component without adverse effects
• Enhanced thermal margin is desired for improved reliability
• The extended operating temperature range to 175°C aligns with application requirements
• Moisture-resistant construction provides additional environmental protection
• Supply chain considerations favor the Vishay Dale CMF series

Both parts maintain identical electrical performance at the 113 kOhms ±1% specification with matching temperature coefficients. Physical dimensions are comparable, with the substitute slightly smaller. Both are ROHS3 compliant and REACH unaffected, ensuring regulatory compatibility.

Frequently Asked Questions (FAQ)

Q: Can CMF55113K00FHEB directly replace RNF14FTC113K in all applications?

A: Direct substitution is valid when the circuit design permits a 0.5W rated component. The higher power rating does not degrade performance in applications designed for 0.25W operation. Verify that PCB layout and thermal design accommodate the slightly different physical dimensions (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L).

Q: What is the significance of the ±1% tolerance match?

A: Both parts maintain ±1% tolerance, ensuring equivalent precision in resistance value. This tight tolerance is critical for applications requiring stable voltage dividers, precision filters, or measurement circuits where resistance accuracy directly impacts circuit performance.

Q: Are there packaging implications when substituting?

A: The main part is supplied in Tape & Reel (TR) format, while the substitute is Cut Tape (CT). This affects handling and automated assembly processes. Verify that your assembly equipment and processes are compatible with the substitute packaging format.

Q: How do the temperature coefficients compare?

A: Both parts specify ±50ppm/°C temperature coefficient, indicating identical stability across temperature variations. The substitute's extended operating range to 175°C provides additional margin for high-temperature applications, though both are rated for the standard -55°C to 155°C minimum range.

Q: What does "Moisture Resistant" mean for the substitute part?

A: The CMF55113K00FHEB includes moisture-resistant construction as an additional feature. This provides enhanced protection in humid or corrosive environments, though both parts are suitable for standard industrial applications.

Q: Are both parts RoHS3 compliant?

A: Yes, both RNF14FTC113K and CMF55113K00FHEB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.