RNF14FAD3K32 Equivalent & Substitute Parts

Part Overview

The RNF14FAD3K32 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 ROHS3 compliant. Substitute parts may be required due to packaging availability, inventory constraints, or application-specific performance requirements such as improved tolerance, higher power rating, or enhanced temperature stability.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Resistance value: 3.32 kOhms (exact match required)
Package type: Axial through-hole (all substitutes maintain this form factor)
Composition: Metal film (maintained across all alternatives)
Compliance: ROHS3 compliant (all substitutes meet this requirement)

Allowable Parameter Variations:

Tolerance: May be equal to or tighter than ±1% (±0.1% is acceptable)
Power rating: May be equal to or higher than 0.25W (0.5W is acceptable)
Temperature coefficient: May be equal to or lower than ±100ppm/°C
Operating temperature range: May be equal to or extended beyond -55°C ~ 155°C
Packaging format: Tape & Box (TB), Cut Tape (CT), Tape & Reel (TR), or Bulk formats are interchangeable for electrical function

All substitute parts listed maintain the same electrical resistance and core safety features while offering variations in packaging, precision, or thermal performance.

Parameter Comparison

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

Engineering Selection Recommendations

Stackpole RNF Series (Direct Substitutes): RNF14FTD3K32 and RNF14FTC3K32 are direct electrical equivalents to RNF14FAD3K32, differing only in packaging format and temperature coefficient. RNF14FTD3K32 offers significantly higher inventory availability (27,878 pcs) in Cut Tape format. RNF14FTC3K32 provides improved temperature stability (±50ppm/°C) in Tape & Reel format. All three Stackpole parts maintain identical electrical specifications and ROHS3 compliance.

Vishay Dale CMF Series (Enhanced Performance Alternatives): CMF553K3200BEEB, CMF553K3200FHEB, CMF553K3200FHEK, and CMF553K3200FKEB offer higher power ratings (0.5W vs. 0.25W) and extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C). CMF553K3200BEEB provides the tightest tolerance (±0.1%) and lowest temperature coefficient (±25ppm/°C), suitable for precision applications. All CMF parts include moisture-resistant features and maintain ROHS3 compliance. CMF553K3200FHEK carries REACH Affected status, while all other substitutes are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD3K32 replace RNF14FAD3K32 directly? A: Yes. Both parts are Stackpole RNF series with identical electrical specifications (3.32 kOhms ±1%, 0.25W, ±100ppm/°C). The difference is packaging format: RNF14FAD3K32 is Tape & Box while RNF14FTD3K32 is Cut Tape. Electrical performance and board-level compatibility are identical.

Q: What is the advantage of RNF14FTC3K32 over RNF14FAD3K32? A: RNF14FTC3K32 offers improved temperature stability with a ±50ppm/°C coefficient compared to ±100ppm/°C in the original part. Both maintain 0.25W power rating and ±1% tolerance. The trade-off is Tape & Reel packaging, which may require different handling in assembly processes.

Q: Can Vishay Dale CMF parts substitute for Stackpole RNF parts? A: Yes, with considerations. CMF parts maintain the same 3.32 kOhms resistance and axial package form factor. However, they offer higher power ratings (0.5W vs. 0.25W), extended temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C), and moisture-resistant features. Physical dimensions differ slightly (0.090" Dia x 0.240" L vs. 0.093" Dia x 0.250" L), which may affect board layout in space-constrained designs.

Q: Which substitute offers the best tolerance specification? A: CMF553K3200BEEB provides ±0.1% tolerance with ±25ppm/°C temperature coefficient, representing the highest precision option. This is suitable for applications requiring tight resistance accuracy. All other substitutes maintain ±1% tolerance matching the original part.

Q: Are all substitutes ROHS3 compliant? A: Yes, all listed substitutes are ROHS3 compliant. CMF553K3200FHEK is REACH Affected, while all other parts (including the main part) are REACH Unaffected.

Q: Does packaging format affect electrical performance? A: No. Tape & Box (TB), Cut Tape (CT), Tape & Reel (TR), and Bulk formats are packaging and handling variations only. Electrical specifications, performance, and reliability are identical within each part number series.

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