RC1005F244CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F244CS is a 240 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This component is rated for 0.063W (1/16W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity rating).

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating, temperature coefficient) and mechanical compatibility (package size, termination count, physical dimensions). Alternative sources provide design flexibility, supply chain redundancy, and access to specialized variants such as automotive-qualified components.

Key Parameters

Parameter	Value
Resistance	240 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package / Case	0402 (1005 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Number of Terminations	2
Size / Dimension	0.039" L x 0.020" W (1.00mm x 0.50mm)
Height - Seated (Max)	0.016" (0.40mm)
RoHS Status	RoHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are classified based on electrical and mechanical parameter alignment with the RC1005F244CS:

Direct Equivalents share identical electrical specifications (240 kOhms, ±1% tolerance, 0.063W power rating, ±100ppm/°C temperature coefficient) and mechanical compatibility (0402 package, 2 terminations, matching dimensions). These parts are interchangeable without circuit redesign.

Upgrade Variants maintain core electrical parameters but feature enhanced power ratings (0.1W vs. 0.063W) or automotive qualification (AEC-Q200). These provide superior thermal performance or reliability certification for demanding applications while remaining mechanically compatible.

Feature Variants match all electrical and mechanical specifications but include additional certifications (automotive AEC-Q200) or enhanced material properties (moisture resistance). These are suitable for applications requiring specific compliance or environmental performance.

Substitution eligibility is determined by:

Resistance value: 240 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package: 0402 (1005 Metric) (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature: -55°C ~ 155°C minimum (exact match or better required)
Composition: Thick Film (exact match required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Features	RoHS Status	MSL
RC1005F244CS	Samsung Electro-Mechanics	240 kOhms	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	RoHS3	1
CR0402-FX-2403GLF	Bourns Inc.	240 kOhms	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	—	RoHS3	1
RC0402FR-07240KL	YAGEO	240 kOhms	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	RoHS3	1
ERJ-2RKF2403X	Panasonic Electronic Components	240 kOhms	±1%	0.1W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS3	1
AC0402FR-07240KL	YAGEO	240 kOhms	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	RoHS3	1
CRCW0402240KFKED	Vishay Dale	240 kOhms	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS3	1
RMCF0402FT240K	Stackpole Electronics Inc	240 kOhms	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS3	1

Engineering Selection Recommendations

Direct Substitution (No Circuit Modification Required):

CR0402-FX-2403GLF (Bourns Inc.) provides direct electrical and mechanical equivalence to RC1005F244CS. Both components share identical resistance, tolerance, power rating, and package specifications. Selection is appropriate for general-purpose applications where moisture resistance is not a specified requirement.

RC0402FR-07240KL (YAGEO) offers direct equivalence with the addition of moisture-resistant construction, matching the environmental protection of the original Samsung part. This variant is suitable for applications in humid or moisture-prone environments.

Upgrade Selection (Enhanced Performance):

ERJ-2RKF2403X (Panasonic Electronic Components) provides increased power rating (0.1W vs. 0.063W) while maintaining all other electrical parameters. This component is automotive-qualified to AEC-Q200 standard. Selection is appropriate for applications requiring higher thermal margin or automotive-grade reliability certification.

Automotive-Qualified Alternatives:

AC0402FR-07240KL (YAGEO), CRCW0402240KFKED (Vishay Dale), and RMCF0402FT240K (Stackpole Electronics Inc) are all AEC-Q200 certified with identical electrical specifications to the original part. AC0402FR-07240KL additionally includes moisture-resistant construction. These components are suitable for automotive applications or designs requiring automotive-grade component qualification.

All substitute parts maintain RoHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-2403GLF replace RC1005F244CS in all applications?

A: CR0402-FX-2403GLF is electrically and mechanically equivalent to RC1005F244CS. However, the Bourns part does not specify moisture-resistant construction. If the original design requires moisture resistance, RC0402FR-07240KL (YAGEO) is the preferred substitute as it includes this feature.

Q: What is the difference between the 0.063W and 0.1W power ratings?

A: ERJ-2RKF2403X is rated for 0.1W (1/10W) power dissipation compared to 0.063W (1/16W) for RC1005F244CS. The higher rating provides greater thermal margin and allows the component to dissipate more power without exceeding temperature limits. This upgrade is suitable for applications with higher current or power requirements, though it is not required for designs operating within the original 0.063W specification.

Q: Are all substitute parts AEC-Q200 automotive qualified?

A: No. CR0402-FX-2403GLF and RC0402FR-07240KL do not carry AEC-Q200 certification. ERJ-2RKF2403X, AC0402FR-07240KL, CRCW0402240KFKED, and RMCF0402FT240K are all AEC-Q200 qualified. Selection of automotive-qualified parts is required only for applications subject to automotive reliability standards.

Q: Do all substitute parts fit the same PCB footprint as RC1005F244CS?

A: Yes. All substitute parts use the 0402 (1005 Metric) package with identical dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm) and maximum seated height specifications. Physical compatibility with existing PCB layouts is confirmed for all listed alternatives.

Q: What is MSL Level 1 and why does it matter?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts carry MSL Level 1 rating, meaning they can be stored and handled under standard warehouse conditions without special desiccant packaging or pre-reflow baking procedures.

Q: Can I use AC0402FR-07240KL if my design does not require automotive qualification?

A: Yes. AC0402FR-07240KL is functionally equivalent to RC1005F244CS and includes moisture-resistant construction. The presence of AEC-Q200 certification does not restrict use in non-automotive applications; it only indicates that the component meets additional automotive reliability requirements.

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