PRNF14FTD3K32 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD3K32 is a 3.32 kOhms ±1% metal film axial resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component is part of the RNF series and features flame retardant coating with safety certification. The part is currently in active production status with 1007 pieces available in stock. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value and tolerance) and mechanical compatibility (axial package configuration) while accounting for variations in power rating, packaging format, and temperature coefficient performance.

Key Parameters

Parameter	Value
Resistance	3.32 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Composition	Metal Film
Package Type	Axial
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Features	Flame Retardant Coating, Safety
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution relationships for the PRNF14FTD3K32 are established based on the following criteria:

Primary Substitution Criteria:

Resistance value: 3.32 kOhms (exact match required)
Tolerance: ±1% or better (±0.1% acceptable as upgrade)
Package configuration: Axial through-hole
Composition: Metal film
Compliance: ROHS3 compliant

Packaging Variations: Parts are grouped by packaging format (Tape & Reel, Cut Tape, Tape & Box, Bulk) which affects supply chain logistics but does not alter electrical performance.

Performance Upgrades: Substitute parts with higher power ratings (0.5W vs. 0.25W), lower temperature coefficients (±25ppm/°C or ±50ppm/°C vs. ±100ppm/°C), or tighter tolerances (±0.1% vs. ±1%) represent functional upgrades suitable for applications requiring enhanced thermal or precision performance.

Manufacturer Variations: Stackpole Electronics Inc (RNF series) and Vishay Dale (CMF series) parts share identical electrical specifications and physical dimensions, enabling direct substitution within the same tolerance and power rating class.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Packaging	Inventory (Pcs)
PRNF14FTD3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.25	±100	-55 to 155	Tape & Reel (TR)	1007
RNF14FAD3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.25	±100	-55 to 155	Tape & Box (TB)	628
RNF14FTD3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.25	±100	-55 to 155	Cut Tape (CT)	27878
RNF14FTC3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.25	±50	-55 to 155	Tape & Reel (TR)	5628
CMF553K3200BEEB	Vishay Dale	3.32 kΩ	±0.1%	0.5	±25	-55 to 175	Cut Tape (CT)	2565
CMF553K3200FHEB	Vishay Dale	3.32 kΩ	±1%	0.5	±50	-55 to 175	Tape & Reel (TR)	3199
CMF553K3200FHEK	Vishay Dale	3.32 kΩ	±1%	0.5	±50	-55 to 175	Bulk	986
CMF553K3200FKEB	Vishay Dale	3.32 kΩ	±1%	0.5	±100	-55 to 175	Cut Tape (CT)	2984

Engineering Selection Recommendations

Direct Equivalents (Same Specifications): RNF14FAD3K32 and RNF14FTD3K32 are direct electrical equivalents to PRNF14FTD3K32, differing only in packaging format. Selection between these three Stackpole parts depends on supply chain requirements and assembly processes. All three maintain identical electrical performance and ROHS3 compliance.

Stackpole Upgrade Option: RNF14FTC3K32 offers improved temperature coefficient stability (±50ppm/°C vs. ±100ppm/°C) while maintaining the same power rating, resistance, and tolerance. This part is suitable for applications requiring tighter frequency stability or thermal performance.

Vishay Dale Upgrade Options: CMF553K3200BEEB, CMF553K3200FHEB, CMF553K3200FHEK, and CMF553K3200FKEB represent higher-performance alternatives with 0.5W power rating and extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C). CMF553K3200BEEB provides the tightest tolerance (±0.1%) and lowest temperature coefficient (±25ppm/°C), suitable for precision applications. CMF553K3200FHEB and CMF553K3200FHEK match the ±1% tolerance with ±50ppm/°C coefficient. CMF553K3200FKEB maintains ±100ppm/°C coefficient matching the original part. All Vishay Dale parts are ROHS3 compliant and feature moisture-resistant construction.

Frequently Asked Questions (FAQ)

Q: Can RNF14FAD3K32 replace PRNF14FTD3K32 in production? A: Yes. Both parts share identical electrical specifications (3.32 kΩ ±1%, 0.25W, ±100ppm/°C). The difference is packaging format: RNF14FAD3K32 uses Tape & Box while PRNF14FTD3K32 uses Tape & Reel. Compatibility depends on assembly equipment capability to handle the different packaging format.

Q: What is the advantage of using RNF14FTC3K32 over PRNF14FTD3K32? A: RNF14FTC3K32 provides improved temperature stability with ±50ppm/°C coefficient compared to ±100ppm/°C in the original part. This reduces frequency drift in oscillator circuits and improves long-term accuracy in precision measurement applications. All other specifications remain identical.

Q: Are Vishay Dale CMF series parts compatible with Stackpole RNF series? A: Yes, for applications where the higher power rating (0.5W vs. 0.25W) and extended temperature range (-55°C to 175°C vs. -55°C to 155°C) are acceptable. Physical dimensions are nearly identical (0.090" Dia x 0.240" L for CMF vs. 0.093" Dia x 0.250" L for RNF), and both use axial package configuration. Electrical specifications match at the tolerance and resistance level.

Q: Which substitute part offers the best precision? A: CMF553K3200BEEB provides ±0.1% tolerance with ±25ppm/°C temperature coefficient, representing the highest precision option. This part is suitable for applications requiring tight component matching or precision analog circuits.

Q: Can I use a 0.5W rated part in place of a 0.25W rated part? A: Yes. A higher power rating provides additional thermal margin and does not degrade performance in applications designed for 0.25W components. The physical size difference is minimal (0.090" vs. 0.093" diameter), and both use axial configuration. This substitution is suitable for applications where thermal stress or reliability enhancement is desired.

Q: What packaging format should I select? A: Tape & Reel (TR) is standard for automated assembly lines. Cut Tape (CT) is suitable for manual assembly or small-volume production. Tape & Box (TB) and Bulk formats are used for specific supply chain or inventory management requirements. Electrical performance is identical across all packaging formats.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed parts maintain ROHS3 compliance. CMF553K3200FHEK is noted as REACH Affected; all other parts are REACH Unaffected. Compliance status should be verified against specific regional requirements for your application.

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