RNF14FAD18R2 Equivalent & Substitute Parts

Part Overview

The RNF14FAD18R2 is a 1/4W metal film axial through-hole resistor manufactured by Stackpole Electronics Inc with a resistance value of 18.2 Ohms and ±1% tolerance. This component is classified as Active product status with ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications, particularly when packaging format or inventory availability requires alternative sourcing.

Substiute Parts

RNF14FAD18R2

Stackpole Electronics IncIn Stock: 991RNF14FAD18R2 Datasheet

Current PartRFQ

RNF14FTD18R2

Stackpole Electronics IncIn Stock: 1160RNF14FTD18R2 Datasheet

DirectRFQ

CMF5518R200FHEB

Vishay DaleIn Stock: 2064CMF5518R200FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAD18R2 are classified based on the following substitution criteria:

Direct Substitute (Same Electrical & Mechanical Specifications): RNF14FTD18R2 maintains identical electrical parameters: 18.2 Ohms resistance, ±1% tolerance, 0.25W power rating, metal film composition, and axial package configuration. The primary difference is packaging format (Cut Tape vs. Tape & Box), which does not affect electrical or mechanical compatibility in circuit applications.

Upgrade Substitute (Enhanced Specifications): CMF5518R200FHEB provides upgraded performance characteristics while maintaining core compatibility. Key allowed parameter variations include: increased power rating (0.5W vs. 0.25W), improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C), extended maximum operating temperature (175°C vs. 155°C), and additional moisture-resistant feature. Resistance value (18.2 Ohms) and tolerance (±1%) remain identical. Axial package configuration is maintained.

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD18R2 Selection Criteria: Select RNF14FTD18R2 when packaging format requirements specify Cut Tape delivery and electrical specifications must remain identical to the main part. Both components share Active product status and ROHS3 compliance. This substitution is appropriate for applications where inventory availability or supply chain logistics favor the Cut Tape format without requiring enhanced performance characteristics.

CMF5518R200FHEB Selection Criteria: Select CMF5518R200FHEB when circuit design permits increased power dissipation capacity (0.5W vs. 0.25W) or when operating environments require extended temperature range performance (-55°C ~ 175°C). The improved temperature coefficient (±50ppm/°C) and moisture-resistant feature provide enhanced stability in demanding applications. This upgrade substitute maintains ROHS3 compliance and Active product status. The slightly reduced physical dimensions (0.090" Dia x 0.240" L vs. 0.093" Dia x 0.250" L) remain compatible with standard axial component footprints.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD18R2 be used as a direct replacement for RNF14FAD18R2? A: Yes. Both components share identical electrical specifications (18.2 Ohms, ±1%, 0.25W) and axial package configuration. The only difference is packaging format (Cut Tape vs. Tape & Box), which does not affect circuit performance or mechanical compatibility.

Q: What are the advantages of using CMF5518R200FHEB over the main part? A: CMF5518R200FHEB provides three performance enhancements: doubled power rating (0.5W vs. 0.25W), improved temperature stability (±50ppm/°C vs. ±100ppm/°C), and extended maximum operating temperature (175°C vs. 155°C). The moisture-resistant feature adds environmental protection. These upgrades are beneficial in high-temperature or high-dissipation applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. RNF14FAD18R2, RNF14FTD18R2, and CMF5518R200FHEB are all ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: Will the physical size difference of CMF5518R200FHEB affect PCB layout? A: The CMF5518R200FHEB dimensions (0.090" Dia x 0.240" L) are slightly smaller than the main part (0.093" Dia x 0.250" L). This minor reduction is compatible with standard axial component footprints and does not require PCB redesign.

Q: What is the difference between Tape & Box and Cut Tape packaging? A: Tape & Box (TB) provides resistors on tape with protective box packaging, suitable for manual assembly or smaller production runs. Cut Tape (CT) provides resistors on tape without box packaging, optimized for automated pick-and-place assembly. Both formats contain identical components; packaging selection depends on assembly process requirements.