RNF14FTC56K2 Equivalent & Substitute Parts

Part Overview

The RNF14FTC56K2 is a 56.2 kOhms ±1% 0.25W axial through-hole metal film resistor manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-rated construction, designed for applications requiring precision resistance values in compact form factors. The part is currently active in production with 772 units in stock. Substitute parts are identified to address inventory availability, extended operating temperature ranges, or enhanced moisture resistance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTC56K2

Stackpole Electronics IncIn Stock: 804RNF14FTC56K2 Datasheet

Current PartRFQ

CMF5556K200FHEB

Vishay DaleIn Stock: 6088CMF5556K200FHEB Datasheet

UpgradeRFQ

CMF5056K200FHEB

Vishay DaleIn Stock: 1796CMF5056K200FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC56K2 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 56.2 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C
• Package Type: Axial through-hole
• Termination count: 2
• RoHS compliance: ROHS3 Compliant

Allowable Variations:

• Power rating: May be equal or higher (0.25W or greater)
• Operating temperature range: May be equal or extended
• Physical dimensions: May vary within axial package constraints
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) are interchangeable for component selection
• Moisture resistance: Enhanced features are acceptable

The CMF5056K200FHEB and CMF5556K200FHEB meet all critical parameters and are therefore qualified as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

CMF5056K200FHEB (Manufacturer Recommended): Select this part when the original RNF14FTC56K2 specification must be maintained with minimal deviation. This substitute provides identical electrical performance (56.2 kOhms ±1%, 0.25W, ±50ppm/°C) with extended operating temperature range (-55°C ~ 175°C) and enhanced moisture resistance. Physical dimensions are smaller, which may provide layout advantages. ROHS3 compliance and active production status ensure long-term availability.

CMF5556K200FHEB (Upgrade Option): Select this part when higher power dissipation capability is required or when extended thermal performance is beneficial. The 0.5W power rating provides additional margin over the original 0.25W specification. Operating temperature range extends to 175°C. Moisture-resistant construction and significantly higher inventory (6027 units) support supply chain continuity. Physical dimensions remain compatible with standard axial through-hole layouts.

Both substitutes maintain ROHS3 compliance, identical resistance and tolerance specifications, and equivalent temperature coefficient performance.

Frequently Asked Questions (FAQ)

Q: Can CMF5056K200FHEB and CMF5556K200FHEB be used interchangeably with RNF14FTC56K2?

A: Yes. Both parts meet the critical electrical parameters: 56.2 kOhms ±1%, metal film composition, ±50ppm/°C temperature coefficient, and axial package configuration. The CMF5056K200FHEB maintains the original 0.25W power rating, while CMF5556K200FHEB provides 0.5W capability. Both are ROHS3 compliant and rated for -55°C ~ 175°C operation.

Q: What are the physical dimension differences?

A: RNF14FTC56K2 measures 0.093" Dia x 0.250" L (2.35mm x 6.35mm). CMF5056K200FHEB is smaller at 0.065" Dia x 0.150" L (1.65mm x 3.81mm). CMF5556K200FHEB measures 0.090" Dia x 0.240" L (2.29mm x 6.10mm). All three are axial through-hole components compatible with standard PCB layouts, though the smaller CMF5056K200FHEB may provide additional routing flexibility.

Q: Does the higher power rating of CMF5556K200FHEB affect circuit performance?

A: No. Power rating is a thermal capability specification. The 0.5W rating of CMF5556K200FHEB does not alter electrical performance in circuits designed for 0.25W operation. It provides additional thermal margin and is suitable for applications with higher ambient temperatures or increased power dissipation requirements.

Q: Are packaging formats (Tape & Reel vs. Cut Tape) interchangeable?

A: Yes, for component selection purposes. RNF14FTC56K2 is supplied in Tape & Reel format. CMF5056K200FHEB and CMF5556K200FHEB are supplied in Cut Tape format. Both packaging formats contain identical components and are suitable for manual or automated assembly processes.

Q: What is the significance of moisture resistance in the substitute parts?

A: CMF5056K200FHEB and CMF5556K200FHEB include moisture-resistant construction as an enhanced feature. This provides additional protection in humid environments or applications with extended storage periods. The original RNF14FTC56K2 does not specify this feature, but the substitutes' moisture resistance is a non-detrimental enhancement that does not affect compatibility.

Q: Which substitute should be selected for new designs?

A: CMF5056K200FHEB is the manufacturer-recommended substitute, providing identical electrical specifications with extended temperature range and smaller physical footprint. CMF5556K200FHEB is appropriate when higher power dissipation capability or maximum thermal margin is desired. Both are active production parts with strong inventory availability.