RNF14FAD33R2 Equivalent & Substitute Parts

Part Overview

The RNF14FAD33R2 is a 33.2 Ohm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-grade construction with operating temperature range from -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and REACH unaffected classification. Alternative equivalent and substitute parts are available to address packaging preferences, inventory availability, or enhanced performance requirements within compatible electrical and mechanical specifications.

Substiute Parts

RNF14FAD33R2

Stackpole Electronics IncIn Stock: 745RNF14FAD33R2 Datasheet

Current PartRFQ

RNF14FTD33R2

Stackpole Electronics IncIn Stock: 15806RNF14FTD33R2 Datasheet

DirectRFQ

CMF5533R200FHEB

Vishay DaleIn Stock: 1932CMF5533R200FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FAD33R2 is determined by the following critical parameters: resistance value (33.2 Ohms), tolerance (±1%), composition (metal film), and axial package configuration. All substitute parts must maintain these core electrical specifications to ensure functional compatibility in circuit applications.

The RNF14FAD33R2 has two identified substitutes:

Direct Equivalent (Packaging Variant): RNF14FTD33R2 maintains identical electrical specifications and differs only in packaging format (Cut Tape versus Tape & Box), making it a direct functional substitute with no performance impact.

Upgrade Substitute (Enhanced Performance): CMF5533R200FHEB from Vishay Dale provides the same resistance and tolerance but with increased power rating (0.5W versus 0.25W), improved temperature coefficient (±50ppm/°C versus ±100ppm/°C), and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). This part qualifies as an upgrade substitute suitable for applications requiring enhanced thermal performance or higher power dissipation margins.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain ROHS3 compliance and active production status, ensuring regulatory alignment and supply chain continuity. Selection between RNF14FAD33R2 and RNF14FTD33R2 should be based on packaging requirements: Tape & Box format for bulk storage applications versus Cut Tape format for automated assembly processes. Both parts are electrically and mechanically identical.

The CMF5533R200FHEB upgrade substitute is appropriate for applications where thermal performance is critical or where power dissipation margins require additional headroom. The improved temperature coefficient (±50ppm/°C) and extended operating range (-55°C to 175°C) provide enhanced stability in temperature-sensitive circuits. The moisture-resistant feature offers additional environmental protection in humid or corrosive conditions.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD33R2 be used as a direct replacement for RNF14FAD33R2?

A: Yes. RNF14FTD33R2 is a direct functional equivalent with identical electrical specifications (33.2 Ohms ±1%, 0.25W, metal film, axial package). The only difference is packaging format (Cut Tape versus Tape & Box), which does not affect circuit performance.

Q: Is CMF5533R200FHEB compatible with circuits designed for RNF14FAD33R2?

A: Yes, with design considerations. CMF5533R200FHEB maintains the same resistance value, tolerance, and axial package configuration. The increased power rating (0.5W versus 0.25W) and improved temperature coefficient make it suitable for the same applications. Physical dimensions are comparable (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L), allowing board-level compatibility.

Q: What are the key differences between the Stackpole RNF series and Vishay Dale CMF series?

A: Both are metal film axial resistors with identical resistance and tolerance specifications. The CMF5533R200FHEB offers enhanced performance: higher power rating (0.5W), lower temperature coefficient (±50ppm/°C), extended operating temperature range (to 175°C), and moisture-resistant construction. These differences make the CMF series suitable for more demanding thermal and environmental applications.

Q: Which packaging format should be selected for automated assembly?

A: Cut Tape (CT) format, represented by RNF14FTD33R2 and CMF5533R200FHEB, is standard for automated pick-and-place assembly processes. Tape & Box (TB) format is suitable for manual assembly or bulk component storage.

Q: Are all three parts suitable for high-temperature applications?

A: RNF14FAD33R2 and RNF14FTD33R2 operate to 155°C maximum. CMF5533R200FHEB extends to 175°C, making it the appropriate choice for applications requiring operation near or above 155°C.