RNF14FAD43K2 Equivalent & Substitute Parts

Part Overview

The RNF14FAD43K2 is a 43.2 kOhms ±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 construction with ROHS3 compliance. The part is currently active in production with 837 pieces in stock. Substitute parts are identified to address packaging format availability, tolerance requirements, and power rating needs across different application scenarios.

Key Parameters

Parameter	Value
Resistance	43.2 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Composition	Metal Film
Package Type	Axial
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Features	Flame Retardant Coating, Safety
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following core parameters: resistance value (43.2 kOhms), composition (metal film), package type (axial), and compliance certifications (ROHS3). Variations in the following parameters define substitute categories:

Packaging Format: Tape & Box (TB), Cut Tape (CT), or Tape & Reel (TR)
Tolerance: ±1% or ±0.1%
Power Rating: 0.25W (1/4W) or 0.5W (1/2W)
Manufacturer: Stackpole Electronics Inc or Vishay Dale
Temperature Coefficient: ±100ppm/°C or ±50ppm/°C
Maximum Operating Temperature: 155°C or 175°C

All identified substitutes maintain the 43.2 kOhms resistance value, metal film composition, axial package configuration, and ROHS3 compliance required for direct functional equivalence.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Packaging	Temp Coeff	Op Temp Range	Inventory
RNF14FAD43K2	Stackpole Electronics Inc	43.2 kOhms	±1%	0.25W	Tape & Box	±100ppm/°C	-55°C ~ 155°C	837 Pcs
RNF14FTD43K2	Stackpole Electronics Inc	43.2 kOhms	±1%	0.25W	Cut Tape	±100ppm/°C	-55°C ~ 155°C	14737 Pcs
RNF14BTD43K2	Stackpole Electronics Inc	43.2 kOhms	±0.1%	0.25W	Cut Tape	±100ppm/°C	-55°C ~ 155°C	7825 Pcs
RNMF12FTD43K2	Stackpole Electronics Inc	43.2 kOhms	±1%	0.5W	Tape & Reel	±100ppm/°C	-55°C ~ 155°C	628 Pcs
CMF5543K200FHEB	Vishay Dale	43.2 kOhms	±1%	0.5W	Cut Tape	±50ppm/°C	-55°C ~ 175°C	3665 Pcs

Engineering Selection Recommendations

Direct Equivalent (Same Specifications) RNF14FTD43K2 provides identical electrical and thermal specifications to RNF14FAD43K2, differing only in packaging format (Cut Tape versus Tape & Box). Selection between these parts depends on procurement and assembly line requirements.

Higher Tolerance Grade RNF14BTD43K2 offers ±0.1% tolerance versus the ±1% specification of the main part, maintaining all other parameters. This part is suitable for applications requiring tighter tolerance control while preserving the 0.25W power rating and Stackpole Electronics Inc manufacturing.

Higher Power Rating RNMF12FTD43K2 and CMF5543K200FHEB both provide 0.5W (1/2W) power rating, doubling the dissipation capability. RNMF12FTD43K2 maintains Stackpole Electronics Inc manufacturing with identical temperature coefficient. CMF5543K200FHEB is manufactured by Vishay Dale with improved temperature coefficient (±50ppm/°C) and extended maximum operating temperature (175°C).

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD43K2 replace RNF14FAD43K2 in production? A: Yes. Both parts share identical electrical specifications (43.2 kOhms ±1%, 0.25W, metal film, axial). The difference is packaging format: RNF14FTD43K2 uses Cut Tape while RNF14FAD43K2 uses Tape & Box. Compatibility depends on assembly equipment capability to handle the respective packaging format.

Q: When should RNF14BTD43K2 be selected instead of the main part? A: RNF14BTD43K2 is selected when circuit design requires ±0.1% tolerance instead of ±1%. All other specifications remain identical. This upgrade is appropriate for precision analog circuits, reference networks, or measurement applications where tighter tolerance improves performance.

Q: What is the functional difference between 0.25W and 0.5W rated parts? A: Power rating indicates maximum continuous power dissipation. A 0.5W part (RNMF12FTD43K2 or CMF5543K200FHEB) can safely dissipate twice the power of a 0.25W part. Selection depends on actual circuit power dissipation requirements. Oversizing power rating does not degrade performance but increases component size and cost.

Q: Is CMF5543K200FHEB compatible with RNF14FAD43K2? A: CMF5543K200FHEB is functionally compatible for the 43.2 kOhms resistance value and ±1% tolerance. It differs in manufacturer (Vishay Dale), power rating (0.5W versus 0.25W), temperature coefficient (±50ppm/°C versus ±100ppm/°C), and maximum operating temperature (175°C versus 155°C). Selection requires verification that the application can accommodate these parameter differences.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of RNF14FAD43K2.

Q: What packaging formats are available for 43.2 kOhms ±1% 0.25W resistors? A: RNF14FAD43K2 is available in Tape & Box format with 837 pieces in stock. RNF14FTD43K2 provides the same specifications in Cut Tape format with significantly higher inventory (14737 pieces). Format selection depends on procurement volume and assembly line automation requirements.

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