RNF14FAC9K76 Equivalent & Substitute Parts

Part Overview

The RNF14FAC9K76 is a 9.76 kOhms ±1% 0.25W axial through-hole 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 production with 1051 pieces in stock inventory. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when design requirements necessitate different power ratings or packaging configurations.

Substiute Parts

RNF14FAC9K76

Stackpole Electronics IncIn Stock: 1135RNF14FAC9K76 Datasheet

Current PartRFQ

CMF559K7600FHEB

Vishay DaleIn Stock: 2530CMF559K7600FHEB Datasheet

UpgradeRFQ

CMF509K7600FHEB

Vishay DaleIn Stock: 3407CMF509K7600FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAC9K76 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 9.76 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C
• Package Type: Axial
• RoHS Compliance: ROHS3 Compliant

Allowable Variations:

• Power rating may increase (0.25W to 0.5W) without affecting circuit functionality
• Operating temperature range may extend beyond the original specification
• Physical dimensions may vary within axial package constraints
• Packaging format (Tape & Box, Cut Tape, Tape & Reel) may differ

Two substitute parts meet these criteria: CMF509K7600FHEB (manufacturer-recommended, same 0.25W rating) and CMF559K7600FHEB (upgraded 0.5W rating).

Parameter Comparison

Engineering Selection Recommendations

CMF509K7600FHEB (Manufacturer-Recommended Substitute): This part is the primary substitute option. It maintains identical electrical specifications (9.76 kOhms, ±1%, 0.25W) and temperature coefficient as the RNF14FAC9K76. The extended operating temperature range (-55°C ~ 175°C) provides additional thermal margin. Both parts are ROHS3 compliant and feature flame retardant coating with safety construction. The CMF509K7600FHEB includes moisture-resistant properties and has higher inventory availability (3313 pieces). Physical dimensions are smaller, which may be advantageous in space-constrained layouts.

CMF559K7600FHEB (Upgrade Substitute): This part provides a higher power rating (0.5W versus 0.25W) while maintaining all other critical electrical parameters. Selection of this part is appropriate when circuit design allows for increased power dissipation capability or when thermal margin enhancement is required. The extended operating temperature range and moisture-resistant features provide additional environmental protection. This option is suitable for applications where the original 0.25W rating may approach thermal limits.

Frequently Asked Questions (FAQ)

Q: Can CMF509K7600FHEB be used as a direct replacement for RNF14FAC9K76? A: Yes. Both parts have identical resistance (9.76 kOhms), tolerance (±1%), power rating (0.25W), and temperature coefficient (±50ppm/°C). The CMF509K7600FHEB is the manufacturer-recommended substitute with ROHS3 compliance and extended operating temperature range.

Q: What is the difference between CMF509K7600FHEB and CMF559K7600FHEB? A: The primary difference is power rating. CMF509K7600FHEB is rated at 0.25W (matching the original part), while CMF559K7600FHEB is rated at 0.5W. Both maintain identical resistance, tolerance, and temperature coefficient. The higher power rating of CMF559K7600FHEB provides increased thermal capability.

Q: Are there physical dimension differences between these parts? A: Yes. The RNF14FAC9K76 measures 0.093" Dia x 0.250" L. The CMF509K7600FHEB measures 0.065" Dia x 0.150" L (smaller). The CMF559K7600FHEB measures 0.090" Dia x 0.240" L (similar to original). All are axial package type and suitable for through-hole mounting.

Q: Do all substitute parts meet RoHS requirements? A: Yes. The RNF14FAC9K76, CMF509K7600FHEB, and CMF559K7600FHEB are all ROHS3 compliant.

Q: What packaging formats are available? A: RNF14FAC9K76 is supplied in Tape & Box format. CMF509K7600FHEB is available in Tape & Reel format. CMF559K7600FHEB is available in Cut Tape format. All formats are suitable for automated assembly processes.

Q: Can CMF559K7600FHEB be used in applications designed for 0.25W resistors? A: Yes. The higher power rating (0.5W) is a non-limiting parameter. The part will function correctly in circuits designed for 0.25W resistors, with the benefit of additional thermal margin and reduced operating temperature.