RC5025F1403CS Equivalent & Substitute Parts

Part Overview

The RC5025F1403CS is a 140 kOhm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.667W (2/3W) power dissipation in a 2010 (5025 Metric) surface mount package. This component is classified as Active product status and features moisture-resistant construction suitable for general industrial applications.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit higher power ratings or enhanced automotive qualification. The substitute parts listed maintain electrical equivalence through identical resistance value, tolerance, temperature coefficient, and package dimensions while offering alternative manufacturer sources and enhanced feature sets.

Key Parameters

Parameter	Value	Criticality for Substitution
Resistance Value	140 kOhms	Must Match Exactly
Tolerance	±1%	Must Match Exactly
Power Rating	0.667W (2/3W)	Equal or Higher Acceptable
Package / Case	2010 (5025 Metric)	Must Match Exactly
Composition	Thick Film	Must Match Exactly
Temperature Coefficient	±100ppm/°C	Must Match Exactly
Operating Temperature Range	-55°C ~ 155°C	Must Match or Exceed
RoHS Status	ROHS3 Compliant	Must Match Exactly
Moisture Sensitivity Level	MSL 1 (Unlimited)	Must Match or Better

Substitute Part Grouping Explanation

Substitution eligibility for the RC5025F1403CS is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Resistance value of 140 kOhms
Tolerance of ±1%
Package designation of 2010 (5025 Metric)
Thick film composition
Temperature coefficient of ±100ppm/°C
Operating temperature range of -55°C to 155°C
RoHS3 compliance
MSL rating of 1 or better

Allowable Variations:

Power rating may be equal to or higher than 0.667W (0.75W is acceptable)
Product status may differ (Active or Not For New Designs)
Packaging format may vary (bulk or Tape & Reel)
Additional certifications such as AEC-Q200 automotive qualification are permissible enhancements

The two substitute parts identified—ERJ-12SF1403U (Panasonic) and RMCF2010FT140K (Stackpole)—satisfy all mandatory parameters while offering higher power ratings (0.75W) and automotive-grade qualification.

Parameter Comparison

Parameter	RC5025F1403CS (Samsung)	ERJ-12SF1403U (Panasonic)	RMCF2010FT140K (Stackpole)
Resistance Value	140 kOhms	140 kOhms	140 kOhms
Tolerance	±1%	±1%	±1%
Power Rating	0.667W (2/3W)	0.75W (3/4W)	0.75W (3/4W)
Composition	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Package / Case	2010 (5025 Metric)	2010 (5025 Metric)	2010 (5025 Metric)
Size / Dimension	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)
Height - Seated (Max)	0.026" (0.66mm)	0.028" (0.70mm)	0.028" (0.70mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)
Product Status	Active	Not For New Designs	Active
Automotive Qualification	None Listed	AEC-Q200	AEC-Q200

Engineering Selection Recommendations

RC5025F1403CS (Samsung Electro-Mechanics) - Primary Selection

The RC5025F1403CS remains the primary component choice for new designs. It carries Active product status, ensuring continued manufacturer support and long-term availability. The component is ROHS3 compliant and carries MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling.

ERJ-12SF1403U (Panasonic Electronic Components) - Limited Substitution

The ERJ-12SF1403U is electrically and mechanically equivalent to the primary part with the exception of higher power rating (0.75W versus 0.667W). However, this component is designated as Not For New Designs, indicating Panasonic has discontinued active development and marketing for this part number. Use of this substitute is restricted to legacy system maintenance, repair, or replacement scenarios where existing inventory must be maintained. The part carries AEC-Q200 automotive qualification, which exceeds the requirements of the primary part.

RMCF2010FT140K (Stackpole Electronics Inc) - Preferred Substitute

The RMCF2010FT140K is the recommended substitute for the RC5025F1403CS. This component maintains Active product status, ensuring ongoing manufacturer support and availability. It provides identical electrical performance with a higher power rating (0.75W), offering improved thermal margin in power-dissipation-sensitive applications. The part carries AEC-Q200 automotive qualification and ROHS3 compliance. The maximum seated height of 0.028" (0.70mm) versus 0.026" (0.66mm) for the primary part represents a negligible difference suitable for standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-12SF1403U be used as a direct replacement for the RC5025F1403CS?

A: The ERJ-12SF1403U is electrically and mechanically compatible with the RC5025F1403CS. Both components share identical resistance value (140 kOhms), tolerance (±1%), package dimensions (2010/5025 Metric), and operating temperature range (-55°C to 155°C). The ERJ-12SF1403U provides higher power rating (0.75W versus 0.667W). However, the ERJ-12SF1403U carries Not For New Designs status, restricting its use to maintenance and repair applications only.

Q: What is the difference between the 0.667W and 0.75W power ratings?

A: The power rating indicates the maximum continuous power dissipation the resistor can handle without exceeding specified temperature limits. The RMCF2010FT140K and ERJ-12SF1403U, both rated at 0.75W, can safely dissipate 12.5% more power than the RC5025F1403CS at 0.667W. In applications where the RC5025F1403CS operates below 0.667W, either substitute part will function identically. Higher power rating does not negatively impact performance in lower-power applications.

Q: Are there any height clearance concerns when substituting the RMCF2010FT140K?

A: The RMCF2010FT140K has a maximum seated height of 0.028" (0.70mm) compared to 0.026" (0.66mm) for the RC5025F1403CS. This 0.002" (0.04mm) difference is within standard PCB assembly tolerances and does not create clearance issues for typical surface mount applications. PCB design clearance specifications typically accommodate variations of this magnitude.

Q: Does AEC-Q200 qualification affect compatibility?

A: AEC-Q200 is an automotive industry qualification standard that certifies component reliability under automotive operating conditions. The presence of AEC-Q200 qualification on the RMCF2010FT140K and ERJ-12SF1403U does not negatively impact their use in non-automotive applications. These parts are fully compatible with the RC5025F1403CS in all application environments.

Q: What is MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity constraints. These resistors can be stored indefinitely without desiccant packaging or environmental controls. All three parts in this comparison carry MSL 1 rating, eliminating moisture-related handling and storage considerations during substitution.

Q: Can the RMCF2010FT140K be used in new designs?

A: Yes. The RMCF2010FT140K carries Active product status, indicating Stackpole Electronics actively manufactures, markets, and supports this component. It is suitable for new design implementations and offers long-term availability assurance.

Q: Are there any REACH or RoHS compliance differences?

A: All three parts—RC5025F1403CS, ERJ-12SF1403U, and RMCF2010FT140K—carry identical ROHS3 compliance and REACH Unaffected status. No compliance-related restrictions apply to substitution between these parts.

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