RNF14FTC162K Equivalent & Substitute Parts

Part Overview

The RNF14FTC162K is a 162 kOhms ±1% 0.25W (1/4W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently Active in product status with 975 pieces in stock inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, application-specific power rating requirements, or design optimization needs.

Substiute Parts

RNF14FTC162K

Stackpole Electronics IncIn Stock: 990RNF14FTC162K Datasheet

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CMF55162K00FHEB

Vishay DaleIn Stock: 1692CMF55162K00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC162K are identified based on strict electrical and mechanical parameter matching. The substitution logic is as follows:

Primary Matching Criteria:

• Resistance value must be exactly 162 kOhms
• Tolerance must be ±1% or tighter
• Composition must be Metal Film
• Package type must be Axial
• Temperature coefficient must be ±50ppm/°C or better
• Operating temperature range must encompass or exceed -55°C ~ 155°C
• RoHS3 compliance is mandatory

Secondary Compatibility Factors:

• Power rating may be equal to or greater than 0.25W
• Physical dimensions may vary within axial package constraints
• Flame retardant and safety features must be maintained

The CMF55162K00FHEB qualifies as a substitute because it meets all primary matching criteria while offering an upgraded power rating (0.5W vs. 0.25W) and extended operating temperature range (-55°C ~ 175°C).

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution Criteria:

The CMF55162K00FHEB is a valid direct substitute for the RNF14FTC162K based on the following engineering factors:

1. Electrical Equivalence: Both parts maintain identical resistance value (162 kOhms) and tolerance (±1%), ensuring circuit performance is preserved.

2. Thermal Performance: The CMF55162K00FHEB's 0.5W power rating exceeds the RNF14FTC162K's 0.25W specification, providing additional thermal margin in applications with power dissipation concerns.

3. Temperature Stability: Both parts exhibit identical temperature coefficient (±50ppm/°C), maintaining precision across the operating temperature envelope. The substitute's extended operating range (-55°C ~ 175°C) provides additional margin beyond the main part's -55°C ~ 155°C specification.

4. Regulatory Compliance: Both parts are ROHS3 compliant and carry equivalent environmental certifications (REACH Unaffected, ECCN EAR99), meeting regulatory requirements for equivalent applications.

5. Physical Compatibility: Axial package form factor is maintained. Minor dimensional variations (0.093" vs. 0.090" diameter; 0.250" vs. 0.240" length) are within standard axial resistor package tolerances and do not affect PCB layout compatibility or assembly equipment compatibility.

6. Feature Enhancement: The substitute includes moisture-resistant coating in addition to flame retardant properties, providing enhanced environmental protection without compromising the original design intent.

Selection Guidance:

Use the CMF55162K00FHEB when the RNF14FTC162K is unavailable or when the application benefits from higher power rating or extended temperature range. No circuit redesign or re-qualification is required for direct substitution in applications originally specified for the RNF14FTC162K.

Frequently Asked Questions (FAQ)

Q: Can the CMF55162K00FHEB replace the RNF14FTC162K in all applications?

A: Yes, the CMF55162K00FHEB is a direct substitute for the RNF14FTC162K. Both parts share identical resistance value, tolerance, temperature coefficient, and package type. The substitute's higher power rating (0.5W vs. 0.25W) and extended operating temperature range provide additional design margin without introducing incompatibility.

Q: What is the significance of the different power ratings (0.25W vs. 0.5W)?

A: Power rating indicates the maximum thermal dissipation the resistor can safely handle. The CMF55162K00FHEB's 0.5W rating is double that of the RNF14FTC162K. In applications where the original 0.25W part was specified, the 0.5W substitute will operate at lower junction temperature, improving reliability and lifespan. No circuit modification is required.

Q: Are there physical compatibility concerns with the dimensional differences?

A: No. The dimensional variations between the two parts (0.093" vs. 0.090" diameter; 0.250" vs. 0.240" length) are within standard axial resistor package tolerances. Both parts use identical Axial package type and will fit standard PCB layouts and assembly equipment designed for 1/4W or 1/2W axial resistors.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the RNF14FTC162K and CMF55162K00FHEB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry flame retardant coating and safety construction. The substitute includes additional moisture-resistant coating, which enhances environmental protection without affecting regulatory equivalence.

Q: What is the temperature coefficient and why does it matter?

A: Both parts have a temperature coefficient of ±50ppm/°C, meaning the resistance value changes by a maximum of 50 parts per million for each degree Celsius change in operating temperature. This specification is critical for precision applications where resistance stability across temperature variations is required. Identical temperature coefficients ensure equivalent circuit performance across the operating temperature range.

Q: Can the substitute be used in high-temperature applications?

A: The CMF55162K00FHEB operates up to 175°C, compared to the RNF14FTC162K's 155°C maximum. The substitute is suitable for applications requiring operation at temperatures up to 175°C. The original part is limited to 155°C. For applications operating between 155°C and 175°C, the substitute is required.

Q: Are there any packaging format differences?

A: The RNF14FTC162K is supplied in Tape & Reel (TR) packaging, while the CMF55162K00FHEB is available in Cut Tape (CT) packaging. Both are standard formats for through-hole axial resistors. Packaging format does not affect electrical or mechanical compatibility; it only affects handling and assembly logistics.