RNF14FTC23K7 Equivalent & Substitute Parts

Part Overview

The RNF14FTC23K7 is a 23.7 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 reliable performance across industrial temperature ranges. The part is currently in active production status with 674 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

RNF14FTC23K7

Stackpole Electronics IncIn Stock: 760RNF14FTC23K7 Datasheet

Current PartRFQ

CMF5523K700FHEB

Vishay DaleIn Stock: 1922CMF5523K700FHEB Datasheet

UpgradeRFQ

CMF5023K700FHEB

Vishay DaleIn Stock: 1825CMF5023K700FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC23K7 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 23.7 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C
• Package Type: Axial (through-hole)
• RoHS Compliance: ROHS3 Compliant

Allowable Variations:

• Power rating may be equal or higher (0.25W or greater)
• Operating temperature range may be equal or extended
• Physical dimensions may vary within axial package constraints
• Packaging format (Tape & Reel vs. Cut Tape) does not affect electrical compatibility

Two substitute parts meet these criteria: CMF5023K700FHEB (manufacturer-recommended, same power rating) and CMF5523K700FHEB (upgraded power rating).

Parameter Comparison

Engineering Selection Recommendations

CMF5023K700FHEB (Manufacturer-Recommended Substitute): This part is the direct equivalent from Vishay Dale, matching the RNF14FTC23K7 in all critical electrical parameters including resistance, tolerance, power rating, and temperature coefficient. The extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C) provides additional thermal margin. The addition of moisture-resistant features enhances reliability in humid environments. Physical dimensions are smaller, which may be advantageous in space-constrained layouts. Both parts maintain ROHS3 compliance and identical electrical performance. This substitute is suitable for direct replacement in all applications where the RNF14FTC23K7 is specified.

CMF5523K700FHEB (Upgraded Substitute): This part provides the same electrical characteristics as the main part but with doubled power dissipation capability (0.5W vs. 0.25W). The higher power rating allows operation in circuits with greater current or voltage stress without thermal derating. Extended operating temperature range and moisture-resistant features match the CMF5023K700FHEB. This substitute is appropriate for applications requiring enhanced thermal headroom or when circuit conditions exceed the original 0.25W specification. Physical dimensions are comparable to the main part.

Both substitute parts are active products with higher inventory availability and maintain full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can CMF5023K700FHEB be used as a direct drop-in replacement for RNF14FTC23K7? A: Yes. Both parts share identical resistance (23.7 kOhms), tolerance (±1%), power rating (0.25W), temperature coefficient (±50ppm/°C), and composition (metal film). The smaller physical dimensions of the CMF5023K700FHEB may require PCB layout verification, but electrical performance is equivalent.

Q: What is the advantage of using CMF5523K700FHEB over CMF5023K700FHEB? A: The CMF5523K700FHEB provides double the power dissipation rating (0.5W vs. 0.25W). Select this part if circuit analysis indicates power dissipation approaching or exceeding 0.25W, or if thermal margin is required for reliability in high-temperature environments.

Q: Are there any compatibility issues with different packaging formats (Tape & Reel vs. Cut Tape)? A: No. Packaging format affects only procurement and handling logistics. Electrical and mechanical compatibility remain unchanged. Both formats contain identical components.

Q: Do the substitute parts maintain the same safety and flame retardant certifications? A: Yes. All three parts feature flame retardant coating and safety-grade construction. The substitute parts from Vishay Dale add moisture-resistant properties, enhancing overall reliability without compromising existing certifications. All parts are ROHS3 compliant.

Q: What is the impact of the extended operating temperature range on substitute parts? A: The substitute parts operate to 175°C versus 155°C for the main part. This extended range provides additional thermal margin and is beneficial in high-temperature applications. There is no negative impact when used in applications within the original -55°C ~ 155°C range.

Q: Can physical dimension differences affect circuit performance? A: Physical dimensions do not affect electrical performance. However, verify PCB layout compatibility, particularly trace spacing and component density, when substituting the smaller CMF5023K700FHEB into existing designs. The CMF5523K700FHEB dimensions are comparable to the original part.