RNF14FAC3K32 Equivalent & Substitute Parts

Part Overview

The RNF14FAC3K32 is a 3.32 kOhms ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) with flame retardant coating and safety features. Manufactured by Stackpole Electronics Inc, this component is actively produced and widely used in general-purpose electronic applications requiring precision resistive elements.

Substitute parts become necessary due to inventory constraints, packaging format requirements, or design upgrades that benefit from enhanced performance specifications such as improved tolerance, higher power ratings, or extended operating temperature ranges.

Substiute Parts

RNF14FAC3K32

Stackpole Electronics IncIn Stock: 793RNF14FAC3K32 Datasheet

Current PartRFQ

RNF14FTC3K32

Stackpole Electronics IncIn Stock: 5651RNF14FTC3K32 Datasheet

DirectRFQ

CMF553K3200BEEB

Vishay DaleIn Stock: 2605CMF553K3200BEEB Datasheet

UpgradeRFQ

CMF553K3200FHEB

Vishay DaleIn Stock: 3225CMF553K3200FHEB Datasheet

UpgradeRFQ

CMF553K3200FHEK

Vishay DaleIn Stock: 1036CMF553K3200FHEK Datasheet

UpgradeRFQ

CMF503K3200FHEB

Vishay DaleIn Stock: 7031CMF503K3200FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Packaging Substitute: RNF14FTC3K32 maintains identical electrical specifications and differs only in packaging format (Tape & Reel vs. Tape & Box), making it a direct functional equivalent.

Upgrade Substitutes (Enhanced Performance): CMF553K3200BEEB, CMF553K3200FHEB, and CMF553K3200FHEK are manufactured by Vishay Dale and offer improved specifications including higher power rating (0.5W vs. 0.25W), tighter tolerance (±0.1% for BEEB variant), lower temperature coefficient (±25ppm/°C for BEEB), and extended operating temperature range (-55°C to 175°C). These parts maintain the same 3.32 kOhms resistance value and axial package configuration.

Manufacturer Recommended Substitute: CMF503K3200FHEB is a Vishay Dale alternative that matches the original 0.25W power rating and ±1% tolerance while providing moisture resistance and extended temperature range (-55°C to 175°C). Physical dimensions are reduced (0.065" Dia x 0.150" L vs. 0.093" Dia x 0.250" L).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: RNF14FTC3K32 is the preferred substitute when packaging format flexibility is acceptable. Both parts are manufactured by Stackpole Electronics Inc, maintain identical electrical performance, and carry ROHS3 compliance.

For Enhanced Reliability: CMF553K3200FHEB provides the optimal balance of improved specifications (0.5W power rating, extended temperature range to 175°C, moisture resistance) while maintaining the original ±1% tolerance and ±50ppm/°C temperature coefficient. This part is suitable for applications requiring higher thermal margins or extended environmental operating conditions.

For Precision Applications: CMF553K3200BEEB offers the tightest tolerance (±0.1%) and lowest temperature coefficient (±25ppm/°C) among available substitutes, along with 0.5W power rating and 175°C maximum operating temperature. This configuration is appropriate for measurement circuits or precision analog applications.

For Space-Constrained Designs: CMF503K3200FHEB maintains the original 0.25W power rating while providing a significantly smaller physical footprint (0.065" Dia x 0.150" L), extended temperature range, and moisture resistance. This part is suitable for compact PCB layouts where dimensional constraints are critical.

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTC3K32 be used as a direct replacement for RNF14FAC3K32?

A: Yes. Both parts are manufactured by Stackpole Electronics Inc with identical electrical specifications (3.32 kΩ, ±1%, 0.25W, ±50ppm/°C, -55°C to 155°C). The only difference is packaging format: RNF14FAC3K32 is supplied in Tape & Box format while RNF14FTC3K32 is supplied in Tape & Reel format. Electrical performance and physical dimensions are identical.

Q: What are the advantages of CMF553K3200FHEB over the original RNF14FAC3K32?

A: CMF553K3200FHEB provides three key improvements: doubled power rating (0.5W vs. 0.25W), extended maximum operating temperature (175°C vs. 155°C), and added moisture resistance. Tolerance (±1%) and temperature coefficient (±50ppm/°C) remain equivalent. These enhancements provide greater thermal headroom and environmental protection in demanding applications.

Q: Is CMF553K3200BEEB compatible with the original circuit design?

A: Yes. CMF553K3200BEEB maintains the same 3.32 kΩ resistance value and axial package configuration. The tighter tolerance (±0.1% vs. ±1%) and lower temperature coefficient (±25ppm/°C vs. ±50ppm/°C) represent improvements that enhance circuit accuracy without introducing incompatibility. The higher power rating (0.5W) and extended temperature range provide additional design margins.

Q: What is the physical size difference between RNF14FAC3K32 and CMF503K3200FHEB?

A: RNF14FAC3K32 measures 0.093" diameter × 0.250" length, while CMF503K3200FHEB measures 0.065" diameter × 0.150" length. CMF503K3200FHEB is approximately 40% smaller in both dimensions, making it suitable for space-constrained PCB layouts. Both maintain identical electrical specifications at 3.32 kΩ ±1% and 0.25W power rating.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (RNF14FTC3K32, CMF553K3200BEEB, CMF553K3200FHEB, CMF553K3200FHEK, and CMF503K3200FHEB) carry ROHS3 compliance certification, consistent with the original RNF14FAC3K32.

Q: Which substitute part should be selected for high-temperature applications?

A: CMF553K3200FHEB, CMF553K3200BEEB, or CMF503K3200FHEB are all suitable for high-temperature applications, as they support operating temperatures up to 175°C compared to the original 155°C maximum. CMF553K3200BEEB offers the lowest temperature coefficient (±25ppm/°C) for applications requiring maximum thermal stability.