RNF14FTC90R9 Equivalent & Substitute Parts

Part Overview

The RNF14FTC90R9 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 construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently active in production with 1097 units in stock. Substitute parts may be required due to supply chain constraints, packaging format preferences, or application-specific performance requirements such as higher power ratings or enhanced operating temperature ranges.

Substiute Parts

RNF14FTC90R9

Stackpole Electronics IncIn Stock: 1145RNF14FTC90R9 Datasheet

Current PartRFQ

CMF5590R900FHEB

Vishay DaleIn Stock: 6455CMF5590R900FHEB Datasheet

UpgradeRFQ

CMF5090R900FHEB

Vishay DaleIn Stock: 3333CMF5090R900FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC90R9 are qualified based on the following electrical and mechanical parameters:

Core Substitution Criteria:

• Resistance value: 90.9 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Allowable Variations:

• Power rating: May be equal or higher than 0.25W
• Operating temperature range: May be equal or wider than -55°C ~ 155°C
• Physical dimensions: May vary within axial package constraints
• Packaging format: Cut Tape (CT) acceptable as alternative to Tape & Reel (TR)
• Manufacturer: Alternative qualified manufacturers acceptable

The two substitute parts listed below meet all core substitution criteria and are qualified for direct replacement in applications where the specified allowable variations are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with full ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the main part.

CMF5590R900FHEB (Upgrade Option): This part provides a higher power rating of 0.5W (1/2W) compared to the 0.25W rating of the main part, with an extended operating temperature range to 175°C. The increased power dissipation capability and wider temperature range make this suitable for applications requiring enhanced thermal performance. Moisture resistant construction provides additional environmental protection. Physical dimensions are comparable to the main part within axial package specifications.

CMF5090R900FHEB (MFR Recommended Option): This part maintains the exact 0.25W power rating of the main part while offering an extended operating temperature range to 175°C and moisture resistant construction. Physical dimensions are smaller than the main part but remain within axial package constraints. This option provides direct functional equivalence with enhanced environmental specifications.

Both substitute parts are manufactured by Vishay Dale, an established supplier with active product status. Selection between these options depends on application-specific requirements regarding power dissipation capability and physical space constraints.

Frequently Asked Questions (FAQ)

Q: Can CMF5590R900FHEB be used as a direct replacement for RNF14FTC90R9?

A: Yes. Both parts share identical resistance (90.9 Ohms), tolerance (±1%), composition (metal film), temperature coefficient (±50ppm/°C), and package type (axial). The CMF5590R900FHEB has a higher power rating (0.5W vs 0.25W) and extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C), making it suitable for applications where these enhanced specifications are acceptable or beneficial.

Q: Can CMF5090R900FHEB be used as a direct replacement for RNF14FTC90R9?

A: Yes. Both parts share identical resistance (90.9 Ohms), tolerance (±1%), power rating (0.25W), composition (metal film), temperature coefficient (±50ppm/°C), and package type (axial). The CMF5090R900FHEB has an extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C) and smaller physical dimensions, making it suitable for space-constrained applications.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel packaging is supplied on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape packaging is supplied as individual segments cut from the tape, suitable for lower-volume applications or manual assembly. Both formats contain the same component; the difference is in supply and handling format.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CMF5590R900FHEB and CMF5090R900FHEB are ROHS3 compliant, matching the compliance status of the main part RNF14FTC90R9.

Q: What does "moisture resistant" mean on the substitute parts?

A: Moisture resistant construction provides enhanced protection against moisture ingress and environmental degradation. This feature is present on both substitute parts but not specified for the main part, representing an additional environmental specification available in the substitute options.

Q: Can I use the higher power-rated CMF5590R900FHEB in place of the 0.25W RNF14FTC90R9?

A: Yes. A higher power rating is a permissible substitution. The 0.5W rating of CMF5590R900FHEB will not negatively affect circuit operation in applications designed for 0.25W resistors. The component will simply have greater thermal margin and lower operating temperature under the same current conditions.