RNF14FTC1K87 Equivalent & Substitute Parts

Part Overview

The RNF14FTC1K87 is a 1.87 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 maintains Active product status with 991 units in current inventory. Substitute parts are identified to address application requirements such as increased power dissipation capability or enhanced environmental resistance while maintaining core electrical specifications.

Substiute Parts

RNF14FTC1K87

Stackpole Electronics IncIn Stock: 1060RNF14FTC1K87 Datasheet

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CMF551K8700FHEB

Vishay DaleIn Stock: 8153CMF551K8700FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC1K87 is determined by the following critical parameters:

• Resistance Value: Must be 1.87 kOhms
• Tolerance: Must be ±1%
• Composition: Must be Metal Film
• Package Type: Must be Axial
• Temperature Coefficient: Must be ±50ppm/°C
• Regulatory Compliance: Must maintain ROHS3 Compliant status

The CMF551K8700FHEB qualifies as a substitute because it matches all core electrical specifications and maintains equivalent regulatory compliance. The primary difference is an increased power rating (0.5W vs. 0.25W), which represents an upgrade capability rather than a deviation from specification.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTC1K87 and CMF551K8700FHEB maintain Active product status and full ROHS3 compliance, qualifying them for equivalent circuit applications. The CMF551K8700FHEB offers extended operating temperature capability (175°C maximum vs. 155°C) and enhanced moisture resistance, making it suitable for applications requiring higher thermal margins or humid environments. The doubled power rating (0.5W vs. 0.25W) provides additional thermal headroom without altering electrical performance. Selection between these parts should be based on specific application thermal and environmental requirements rather than electrical compatibility, as both deliver identical resistance, tolerance, and temperature coefficient specifications.

Frequently Asked Questions (FAQ)

Q: Can CMF551K8700FHEB replace RNF14FTC1K87 in existing designs?

A: Yes. Both parts share identical resistance (1.87 kOhms), tolerance (±1%), temperature coefficient (±50ppm/°C), and composition (metal film). The CMF551K8700FHEB's higher power rating and extended temperature range represent performance enhancements rather than deviations.

Q: What is the difference in physical dimensions between these parts?

A: RNF14FTC1K87 measures 0.093" diameter × 0.250" length (2.35mm × 6.35mm). CMF551K8700FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). Both are axial package types with compatible PCB footprints.

Q: Are there packaging format differences?

A: Yes. RNF14FTC1K87 is supplied in Tape & Reel (TR) format, while CMF551K8700FHEB is supplied in Cut Tape (CT) format. This affects procurement and assembly processes but does not impact electrical performance.

Q: Does the increased power rating of CMF551K8700FHEB affect circuit behavior?

A: No. Power rating determines thermal dissipation capability, not electrical characteristics. Both parts deliver identical voltage-current relationships and frequency response. The higher rating simply allows operation at higher power levels without exceeding temperature limits.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both RNF14FTC1K87 and CMF551K8700FHEB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, meeting current regulatory requirements for industrial and commercial applications.