RNF14FAD511R Equivalent & Substitute Parts

Part Overview

The RNF14FAD511R is a 511 Ohms ±1% 0.25W (1/4W) through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal film resistor features flame retardant coating and safety characteristics, designed for general-purpose electronic applications requiring precision resistance values. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified for applications requiring alternative packaging formats or enhanced performance specifications.

Substiute Parts

RNF14FAD511R

Stackpole Electronics IncIn Stock: 1023RNF14FAD511R Datasheet

Current PartRFQ

RNF14FTD511R

Stackpole Electronics IncIn Stock: 64324RNF14FTD511R Datasheet

DirectRFQ

CMF55511R00FHEB

Vishay DaleIn Stock: 4814CMF55511R00FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAD511R are classified based on the following allowed electrical and mechanical parameters:

Direct Equivalent (Same Specifications):

• Resistance value: 511 Ohms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Composition: Metal Film
• Package: Axial
• Temperature coefficient: ±100ppm/°C
• Operating temperature: -55°C ~ 155°C
• Compliance: ROHS3, REACH unaffected

Upgrade Substitute (Enhanced Specifications):

• Resistance value: 511 Ohms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W) — higher power dissipation capability
• Composition: Metal Film
• Package: Axial
• Temperature coefficient: ±50ppm/°C — improved stability
• Operating temperature: -55°C ~ 175°C — extended upper limit
• Compliance: ROHS3, REACH unaffected

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD511R (Direct Equivalent): Use this substitute when the application requires identical electrical specifications and the same 0.25W power rating. This part is functionally equivalent to the RNF14FAD511R with the primary difference being packaging format (Cut Tape versus Tape & Box). Both parts maintain ROHS3 compliance and identical temperature coefficient performance. Selection is appropriate for direct replacement in existing designs.

CMF55511R00FHEB (Upgrade Substitute): Use this substitute when the application can benefit from enhanced performance specifications. The CMF55511R00FHEB provides a higher 0.5W power rating, improved temperature coefficient (±50ppm/°C versus ±100ppm/°C), extended operating temperature range (-55°C ~ 175°C), and moisture-resistant features. This upgrade is suitable for applications requiring greater thermal stability or operation in higher-temperature environments. ROHS3 compliance is maintained.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD511R be used as a direct replacement for RNF14FAD511R?

A: Yes. Both parts share identical electrical specifications: 511 Ohms ±1%, 0.25W power rating, metal film composition, ±100ppm/°C temperature coefficient, and -55°C ~ 155°C operating range. The difference is packaging format only (Cut Tape versus Tape & Box). Electrical performance and board-level compatibility are equivalent.

Q: What are the advantages of using CMF55511R00FHEB over RNF14FAD511R?

A: The CMF55511R00FHEB offers three key enhancements: (1) doubled power rating (0.5W versus 0.25W) for applications with higher power dissipation requirements, (2) improved temperature stability with ±50ppm/°C coefficient versus ±100ppm/°C, and (3) extended operating temperature range to 175°C. Moisture-resistant features are also included.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RNF14FTD511R and CMF55511R00FHEB are both ROHS3 compliant and REACH unaffected, matching the compliance status of the RNF14FAD511R.

Q: What is the physical size difference between these parts?

A: RNF14FAD511R and RNF14FTD511R share identical dimensions: 0.093" Dia x 0.250" L (2.35mm x 6.35mm). CMF55511R00FHEB has slightly smaller dimensions: 0.090" Dia x 0.240" L (2.29mm x 6.10mm). All three parts use axial package configuration.

Q: Can CMF55511R00FHEB be used in applications designed for 0.25W resistors?

A: Yes. The CMF55511R00FHEB is a higher-rated component (0.5W) and is electrically compatible with circuits designed for 0.25W resistors. The higher power rating provides additional thermal margin and does not create compatibility issues in standard applications.