RNF14FAD12K1 Equivalent & Substitute Parts

Part Overview

The RNF14FAD12K1 is a 12.1 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-grade construction suitable for industrial and commercial applications. The part is currently active in production with 717 units in stock. Substitute parts are identified to address packaging format availability, enhanced thermal performance, or improved temperature stability specifications.

Key Parameters

Parameter	Value
Resistance	12.1 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

Substitute parts for RNF14FAD12K1 are classified based on the following allowable parameters:

Electrical Parameters (Must Match):

Resistance value: 12.1 kOhms
Tolerance: ±1%
Composition: Metal Film
RoHS3 Compliance

Mechanical Parameters (Must Match):

Package type: Axial
Number of terminations: 2

Allowable Variations:

Packaging format (Tape & Box vs. Cut Tape)
Power rating (0.25W or higher)
Temperature coefficient (±25ppm/°C to ±100ppm/°C)
Operating temperature upper limit (155°C or higher)

Substitutes are grouped by packaging availability and performance tier, with higher power ratings and improved temperature stability classified as upgrades.

Parameter Comparison

Parameter	RNF14FAD12K1	RNF14FTD12K1	RNF14FTE12K1	CMF5512K100FHEB
Manufacturer	Stackpole Electronics Inc	Stackpole Electronics Inc	Stackpole Electronics Inc	Vishay Dale
Resistance	12.1 kOhms	12.1 kOhms	12.1 kOhms	12.1 kOhms
Tolerance	±1%	±1%	±1%	±1%
Power Rating	0.25W	0.25W	0.25W	0.5W
Composition	Metal Film	Metal Film	Metal Film	Metal Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±25ppm/°C	±50ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 175°C
Package	Axial	Axial	Axial	Axial
Packaging Format	Tape & Box	Cut Tape	Cut Tape	Cut Tape
Size / Dimension	0.093" Dia x 0.250" L (2.35mm x 6.35mm)	0.093" Dia x 0.250" L (2.35mm x 6.35mm)	0.093" Dia x 0.250" L (2.35mm x 6.35mm)	0.090" Dia x 0.240" L (2.29mm x 6.10mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	717 Pcs	18707 Pcs	4446 Pcs	5135 Pcs

Engineering Selection Recommendations

RNF14FTD12K1 (Direct Substitute): Identical electrical and mechanical specifications to RNF14FAD12K1. Differs only in packaging format (Cut Tape vs. Tape & Box). Select when Cut Tape packaging is preferred for automated assembly or when Tape & Box format is unavailable. All compliance certifications and performance parameters are equivalent.

RNF14FTE12K1 (Performance Upgrade): Offers improved temperature stability with ±25ppm/°C coefficient compared to ±100ppm/°C of the main part. Maintains identical resistance, tolerance, power rating, and operating temperature range. Select when enhanced frequency stability or precision circuit performance is required. All RoHS3 and safety certifications are maintained.

CMF5512K100FHEB (Enhanced Performance Upgrade): Provides higher power rating (0.5W vs. 0.25W) and extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C). Temperature coefficient of ±50ppm/°C offers intermediate stability. Slightly smaller physical dimensions (0.090" Dia x 0.240" L). Manufactured by Vishay Dale. Select when thermal headroom or higher temperature operation is required. All RoHS3 compliance maintained.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD12K1 be used as a direct replacement for RNF14FAD12K1?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, temperature coefficient, and operating range. The only difference is packaging format (Cut Tape vs. Tape & Box). Selection depends on assembly process requirements.

Q: What is the advantage of RNF14FTE12K1 over RNF14FAD12K1?

A: RNF14FTE12K1 provides superior temperature stability with a temperature coefficient of ±25ppm/°C compared to ±100ppm/°C. All other electrical and mechanical parameters remain identical. This upgrade is beneficial for precision analog circuits where frequency or resistance drift must be minimized.

Q: When should CMF5512K100FHEB be selected instead of RNF14FAD12K1?

A: CMF5512K100FHEB is selected when higher power dissipation capability (0.5W vs. 0.25W) or extended temperature operation (up to 175°C vs. 155°C) is required. The ±50ppm/°C temperature coefficient provides moderate stability improvement. Physical dimensions are slightly smaller.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RNF14FAD12K1, RNF14FTD12K1, RNF14FTE12K1, and CMF5512K100FHEB are all ROHS3 compliant and REACH unaffected.

Q: What is the difference between Tape & Box and Cut Tape packaging?

A: Tape & Box packaging includes a protective box for storage and manual handling. Cut Tape is supplied on continuous tape for automated pick-and-place assembly. Both formats contain identical components; selection depends on assembly methodology and inventory management practices.

Q: Can CMF5512K100FHEB be used in applications designed for 0.25W resistors?

A: Yes. The higher power rating (0.5W) is a non-limiting upgrade. The component will operate safely in circuits designed for 0.25W resistors. Physical dimensions are slightly smaller but remain compatible with standard axial component footprints.

Q: Which substitute offers the best temperature stability?

A: RNF14FTE12K1 provides the best temperature stability with ±25ppm/°C temperature coefficient. CMF5512K100FHEB offers intermediate stability at ±50ppm/°C. RNF14FAD12K1 and RNF14FTD12K1 both have ±100ppm/°C coefficients.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message