RNF14FAC1K00 Equivalent & Substitute Parts

Part Overview

The RNF14FAC1K00 is a 1 kOhms ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, with an operating temperature range of -55°C to 155°C. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified to address packaging availability, performance upgrades, or form factor requirements while maintaining electrical and mechanical compatibility within specified parameters.

Key Parameters

Parameter	Value
Resistance	1 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Composition	Metal Film
Package Type	Axial
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Features	Flame Retardant Coating, Safety
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution relationships for the RNF14FAC1K00 are established based on the following criteria:

Direct Equivalents (Same Electrical & Mechanical Specifications):

Identical resistance value (1 kOhms)
Identical tolerance (±1%)
Identical power rating (0.25W, 1/4W)
Identical composition (Metal Film)
Identical package type (Axial)
Identical operating temperature range (-55°C ~ 155°C)
Identical RoHS compliance status
Variation only in packaging format (Tape & Reel vs. Tape & Box)

Manufacturer Recommended Equivalent (RNMF14FTC1K00):

Identical electrical specifications
Reduced physical dimensions (Mini series)
Same power rating and tolerance
Identical operating temperature range
Identical RoHS compliance

Upgrade Substitutes (Enhanced Performance):

Identical resistance value (1 kOhms)
Enhanced tolerance (±0.1% vs. ±1%)
Higher power rating (0.5W, 1/2W vs. 0.25W, 1/4W)
Improved temperature coefficient (±25ppm/°C vs. ±50ppm/°C on select models)
Extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C)
Identical composition and package type (Axial)
Identical RoHS compliance
Manufacturer: Vishay Dale (CMF series)

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Temp Coeff	Operating Temp	Package	Packaging Format	Size (Dia x L)
RNF14FAC1K00	Stackpole Electronics	1 kOhms	±1%	0.25W	±50ppm/°C	-55°C ~ 155°C	Axial	Tape & Box	0.093" x 0.250" (2.35mm x 6.35mm)
RNF14FTC1K00	Stackpole Electronics	1 kOhms	±1%	0.25W	±50ppm/°C	-55°C ~ 155°C	Axial	Tape & Reel	0.093" x 0.250" (2.35mm x 6.35mm)
RNMF14FTC1K00	Stackpole Electronics	1 kOhms	±1%	0.25W	±50ppm/°C	-55°C ~ 155°C	Axial	Cut Tape	0.070" x 0.130" (1.78mm x 3.30mm)
CMF551K0000BEEB	Vishay Dale	1 kOhms	±0.1%	0.5W	±25ppm/°C	-55°C ~ 175°C	Axial	Cut Tape	0.090" x 0.240" (2.29mm x 6.10mm)
CMF551K0000BEEK	Vishay Dale	1 kOhms	±0.1%	0.5W	±25ppm/°C	-55°C ~ 175°C	Axial	Bulk	0.090" x 0.240" (2.29mm x 6.10mm)
CMF551K0000BHEB	Vishay Dale	1 kOhms	±0.1%	0.5W	±50ppm/°C	-55°C ~ 175°C	Axial	Cut Tape	0.090" x 0.240" (2.29mm x 6.10mm)
CMF551K0000BHEB70	Vishay Dale	1 kOhms	±0.1%	0.5W	±50ppm/°C	-55°C ~ 175°C	Axial	Cut Tape	0.090" x 0.240" (2.29mm x 6.10mm)
CMF551K0000FEEK	Vishay Dale	1 kOhms	±1%	0.5W	±25ppm/°C	-55°C ~ 175°C	Axial	Bulk	0.090" x 0.240" (2.29mm x 6.10mm)
CMF551K0000FHEA	Vishay Dale	1 kOhms	±1%	0.5W	±50ppm/°C	-55°C ~ 175°C	Axial	Cut Tape	0.090" x 0.240" (2.29mm x 6.10mm)
CMF551K0000FHEB	Vishay Dale	1 kOhms	±1%	0.5W	±50ppm/°C	-55°C ~ 175°C	Axial	Cut Tape	0.090" x 0.240" (2.29mm x 6.10mm)
CMF501K0000FHEB	Vishay Dale	1 kOhms	±1%	0.25W	±50ppm/°C	-55°C ~ 175°C	Axial	Cut Tape	0.065" x 0.150" (1.65mm x 3.81mm)

Engineering Selection Recommendations

Direct Substitution (No Performance Change): RNF14FTC1K00 serves as a direct substitute when Tape & Reel packaging is required instead of Tape & Box. Both parts maintain identical electrical and thermal specifications. RNMF14FTC1K00 (Mini series) provides the same electrical performance in a reduced physical footprint, suitable for space-constrained applications.

Upgrade Substitution (Enhanced Performance): Vishay Dale CMF series resistors (CMF551K0000 variants and CMF501K0000FHEB) provide enhanced performance characteristics. CMF551K0000 models offer increased power rating (0.5W vs. 0.25W) and extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C). Select CMF models feature improved tolerance (±0.1% vs. ±1%) and lower temperature coefficient (±25ppm/°C). CMF501K0000FHEB maintains the original 0.25W power rating while providing extended temperature range and improved tolerance.

All substitute parts maintain ROHS3 compliance, axial package configuration, and metal film composition. Selection depends on packaging format availability, thermal performance requirements, and tolerance specifications for the application.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTC1K00 replace RNF14FAC1K00 directly? A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format: RNF14FTC1K00 uses Tape & Reel while RNF14FAC1K00 uses Tape & Box. Selection depends on assembly equipment compatibility and inventory management requirements.

Q: What is the advantage of RNMF14FTC1K00? A: RNMF14FTC1K00 maintains identical electrical specifications but reduces physical dimensions (0.070" Dia x 0.130" L vs. 0.093" Dia x 0.250" L). This Mini series variant is suitable for compact PCB layouts where space is limited.

Q: When should I use Vishay Dale CMF series substitutes? A: CMF series resistors provide enhanced performance. Use CMF551K0000 variants when higher power dissipation (0.5W vs. 0.25W) or extended temperature range (-55°C ~ 175°C) is required. Use CMF models with ±0.1% tolerance for precision applications requiring tighter resistance values.

Q: Are CMF501K0000FHEB and RNF14FAC1K00 interchangeable? A: CMF501K0000FHEB maintains the same 0.25W power rating and 1 kOhms resistance as RNF14FAC1K00. It provides extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C) and improved tolerance (±1%). Physical dimensions differ slightly (0.065" Dia x 0.150" L vs. 0.093" Dia x 0.250" L), which may affect PCB layout compatibility.

Q: What packaging formats are available? A: Stackpole RNF series offers Tape & Box (RNF14FAC1K00), Tape & Reel (RNF14FTC1K00), and Cut Tape (RNMF14FTC1K00). Vishay Dale CMF series provides Cut Tape and Bulk packaging options. Selection depends on assembly process requirements and order quantities.

Q: Do all substitutes maintain RoHS3 compliance? A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of RNF14FAC1K00.

Q: What is the difference between CMF551K0000BEEB and CMF551K0000FHEB? A: Both are 1 kOhms 0.5W axial resistors. CMF551K0000BEEB features ±0.1% tolerance and ±25ppm/°C temperature coefficient. CMF551K0000FHEB features ±1% tolerance and ±50ppm/°C temperature coefficient. Selection depends on tolerance and temperature stability requirements.

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