RNF14FTC8K87 Equivalent & Substitute Parts

Part Overview

The RNF14FTC8K87 is an 8.87 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 tight tolerance specifications. The part is currently in active production status with 738 units available in inventory. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter ranges.

Substiute Parts

RNF14FTC8K87

Stackpole Electronics IncIn Stock: 767RNF14FTC8K87 Datasheet

Current PartRFQ

CMF558K8700FHEB

Vishay DaleIn Stock: 1975CMF558K8700FHEB Datasheet

UpgradeRFQ

CMF508K8700FHEB

Vishay DaleIn Stock: 1820CMF508K8700FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC8K87 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 8.87 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package type: Axial
• Temperature coefficient: ±50ppm/°C
• RoHS compliance: ROHS3 Compliant

Allowable Variations:

• Power rating: May be equal or higher than 0.25W
• Operating temperature range: May be equal or extended
• Physical dimensions: May vary within axial package constraints
• Packaging format: Cut Tape (CT) or Tape & Reel (TR) acceptable

Two substitute parts meet these criteria: CMF558K8700FHEB (0.5W upgrade) and CMF508K8700FHEB (direct 0.25W equivalent), both manufactured by Vishay Dale with enhanced moisture resistance features.

Parameter Comparison

Engineering Selection Recommendations

CMF508K8700FHEB (Manufacturer Recommended): This part provides direct electrical equivalence to the RNF14FTC8K87 with identical power rating (0.25W), resistance, and tolerance specifications. The CMF508K8700FHEB offers extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and includes moisture-resistant features. Physical dimensions are smaller, which may provide layout advantages in space-constrained applications. Both parts maintain ROHS3 compliance and active production status.

CMF558K8700FHEB (Upgrade Option): This substitute provides a higher power rating (0.5W versus 0.25W) while maintaining all other critical electrical parameters. The upgrade path is suitable for applications where thermal margin or power dissipation headroom is beneficial. Extended operating temperature range to 175°C and moisture-resistant construction provide additional environmental protection. Physical dimensions are comparable to the main part. This option is appropriate when circuit design permits the larger power rating without adverse effects.

Both substitute parts are manufactured by Vishay Dale, an established supplier with active production status and full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can CMF508K8700FHEB be used as a direct replacement for RNF14FTC8K87?

A: Yes. Both parts share identical resistance (8.87 kOhms), tolerance (±1%), power rating (0.25W), composition (metal film), and temperature coefficient (±50ppm/°C). The CMF508K8700FHEB provides extended operating temperature range and moisture resistance. Physical dimensions differ, but both are axial package format suitable for through-hole mounting.

Q: What is the difference between CMF558K8700FHEB and CMF508K8700FHEB?

A: The primary difference is power rating: CMF558K8700FHEB is rated at 0.5W (1/2W) while CMF508K8700FHEB is rated at 0.25W (1/4W). All other electrical parameters are identical. Physical dimensions also differ due to the power rating difference. Selection depends on circuit power dissipation requirements.

Q: Are there packaging format differences between these parts?

A: The main part RNF14FTC8K87 is supplied in Tape & Reel (TR) format. Both substitute parts (CMF558K8700FHEB and CMF508K8700FHEB) are supplied in Cut Tape (CT) format. Both formats are standard for through-hole component distribution and do not affect electrical performance or board-level compatibility.

Q: Do all three parts meet the same compliance standards?

A: Yes. RNF14FTC8K87, CMF558K8700FHEB, and CMF508K8700FHEB are all ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. All parts carry HTSUS code 8533.21.0090.

Q: What is the temperature coefficient significance for these resistors?

A: All three parts share an identical temperature coefficient of ±50ppm/°C, meaning resistance value changes by a maximum of 50 parts per million for each degree Celsius change in operating temperature. This specification ensures consistent electrical performance across the operating temperature range and is critical for precision circuit applications.