RNF14FAD90R9 Equivalent & Substitute Parts

Part Overview

The RNF14FAD90R9 is a 90.9 Ohms ±1% 0.25W (1/4W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety design, suitable for general-purpose electronic applications requiring precise resistance values and reliable performance across industrial temperature ranges. The part is currently active in production with 869 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 electrical or mechanical characteristics.

Substiute Parts

RNF14FAD90R9

Stackpole Electronics IncIn Stock: 912RNF14FAD90R9 Datasheet

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CMF5590R900FHEB

Vishay DaleIn Stock: 6455CMF5590R900FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CMF5590R900FHEB from Vishay Dale qualifies as a substitute for the RNF14FAD90R9 based on the following critical parameters:

• Resistance Value: Both parts provide 90.9 Ohms, ensuring electrical equivalence in circuit applications
• Tolerance: Both maintain ±1% tolerance, preserving precision requirements
• Composition: Both are metal film resistors, maintaining the same material and performance characteristics
• Package Configuration: Both use axial through-hole packaging, ensuring mechanical compatibility with existing PCB layouts
• Compliance: Both are ROHS3 compliant and REACH unaffected, meeting regulatory requirements

The substitute part CMF5590R900FHEB offers an upgraded power rating of 0.5W (1/2W) compared to the 0.25W rating of the main part, providing enhanced thermal capability and margin for applications requiring higher power dissipation.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FAD90R9 and CMF5590R900FHEB are active production parts with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and use.

The CMF5590R900FHEB substitute provides superior availability with 6424 pieces in stock versus 869 pieces for the main part. The substitute's higher power rating (0.5W versus 0.25W) and lower temperature coefficient (±50ppm/°C versus ±100ppm/°C) offer improved performance margins in thermal and precision-sensitive applications. The extended operating temperature range to 175°C provides additional operational headroom compared to the main part's 155°C maximum.

Selection between these parts depends on application-specific power dissipation requirements and thermal constraints. The main part RNF14FAD90R9 is suitable for standard applications within its 0.25W power specification. The substitute CMF5590R900FHEB is appropriate when higher power dissipation capability, improved temperature stability, or enhanced moisture resistance is required.

Frequently Asked Questions (FAQ)

Q: Can CMF5590R900FHEB directly replace RNF14FAD90R9 in existing designs?

A: Yes. Both parts share identical resistance values (90.9 Ohms), tolerance (±1%), composition (metal film), and axial package configuration. The substitute's higher power rating and improved temperature coefficient do not create compatibility issues in circuits designed for the main part.

Q: What are the physical dimension differences between these parts?

A: The RNF14FAD90R9 measures 0.093" diameter × 0.250" length (2.35mm × 6.35mm). The CMF5590R900FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). Both are axial through-hole components with 2 terminations. The minor dimensional variation does not affect PCB layout compatibility for standard axial resistor footprints.

Q: What is the significance of the temperature coefficient difference?

A: The CMF5590R900FHEB has a temperature coefficient of ±50ppm/°C compared to ±100ppm/°C for the RNF14FAD90R9. This means the substitute maintains more stable resistance values across temperature variations, providing superior performance in precision applications and wider temperature environments.

Q: Are both parts suitable for high-temperature applications?

A: The RNF14FAD90R9 operates to 155°C maximum. The CMF5590R900FHEB extends to 175°C, providing 20°C additional thermal margin. For applications approaching or exceeding 155°C, the substitute is the appropriate choice.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the RNF14FAD90R9 and CMF5590R900FHEB are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component use in regulated markets.

Q: Which part should be selected for moisture-sensitive environments?

A: The CMF5590R900FHEB includes moisture-resistant features in addition to flame retardant coating, making it the preferred choice for applications exposed to high humidity or condensation conditions.