RC1005F40R2CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F40R2CS is a 40.2 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format with 1/16W (0.063W) power rating. This component is classified as Active product status with moisture resistant characteristics and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value
Resistance	40.2 Ohms
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
Dimensions	0.039" L x 0.020" W (1.00mm x 0.50mm)
Height - Seated (Max)	0.016" (0.40mm)
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for RC1005F40R2CS are classified based on strict alignment with the following critical parameters:

Electrical Equivalence Criteria:

Resistance value: 40.2 Ohms
Tolerance: ±1%
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C

Mechanical Equivalence Criteria:

Package / Case: 0402 (1005 Metric)
Dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm)
Height - Seated (Max): 0.016" (0.40mm) or equivalent
Number of Terminations: 2

Compliance & Certification Criteria:

RoHS3 Compliant
REACH Unaffected
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are organized into three categories:

Direct Substitutes: Identical electrical specifications, mechanical dimensions, and power rating (0.063W / 1/16W). Packaging format may vary (Tape & Reel or Cut Tape).

Upgrade Substitutes: Higher power rating (0.1W / 1/10W) with identical resistance, tolerance, and package dimensions. Suitable for applications requiring enhanced thermal performance.

Similar Substitutes: Identical electrical and mechanical specifications with additional automotive qualification (AEC-Q200) or enhanced moisture resistance features.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Op. Temp Range	Dimensions	Height Max	RoHS	MSL	Features
RC1005F40R2CS	Samsung Electro-Mechanics	40.2 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.40mm	ROHS3	1	Moisture Resistant
CR0402-FX-40R2GLF	Bourns Inc.	40.2 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.40mm	ROHS3	1	—
RC0402FR-0740R2L	YAGEO	40.2 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.40mm	ROHS3	1	Moisture Resistant
ERJ-2RKF40R2X	Panasonic Electronic Components	40.2 Ω	±1%	0.1W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.40mm	ROHS3	1	Automotive AEC-Q200
AC0402FR-0740R2L	YAGEO	40.2 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.37mm	ROHS3	1	Automotive AEC-Q200, Moisture Resistant
CRCW040240R2FKED	Vishay Dale	40.2 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.40mm	ROHS3	1	Automotive AEC-Q200
RMCF0402FT40R2	Stackpole Electronics Inc	40.2 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	1.00mm x 0.50mm	0.40mm	ROHS3	1	Automotive AEC-Q200

Engineering Selection Recommendations

Direct Substitution (No Design Changes Required):

CR0402-FX-40R2GLF (Bourns Inc.), RC0402FR-0740R2L (YAGEO), AC0402FR-0740R2L (YAGEO), CRCW040240R2FKED (Vishay Dale), and RMCF0402FT40R2 (Stackpole Electronics Inc) are electrically and mechanically equivalent to RC1005F40R2CS. All parts maintain identical resistance (40.2 Ohms), tolerance (±1%), power rating (0.063W), package dimensions (0402), and operating temperature range (-55°C ~ 155°C). All substitute parts are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity).

Upgrade Path (Enhanced Thermal Performance):

ERJ-2RKF40R2X (Panasonic Electronic Components) provides identical electrical and mechanical specifications with increased power rating (0.1W / 1/10W) compared to the original 0.063W rating. This component is suitable for applications requiring higher power dissipation capability while maintaining all other electrical parameters. ERJ-2RKF40R2X includes Automotive AEC-Q200 qualification.

Automotive Applications:

AC0402FR-0740R2L, CRCW040240R2FKED, RMCF0402FT40R2, and ERJ-2RKF40R2X include Automotive AEC-Q200 qualification, enabling use in automotive-grade circuit designs. These parts maintain full electrical and mechanical compatibility with RC1005F40R2CS while providing additional reliability assurance for automotive environments.

Packaging Considerations:

RC1005F40R2CS is supplied in Tape & Reel (TR) format. Substitute parts are available in both Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. Packaging format selection does not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-40R2GLF replace RC1005F40R2CS directly without circuit modification?

A: Yes. CR0402-FX-40R2GLF is a direct substitute with identical resistance (40.2 Ohms), tolerance (±1%), power rating (0.063W), package dimensions (0402), and operating temperature range (-55°C ~ 155°C). Both components are ROHS3 compliant and MSL 1 rated.

Q: What is the difference between RC1005F40R2CS and ERJ-2RKF40R2X?

A: The primary difference is power rating. RC1005F40R2CS is rated at 0.063W (1/16W), while ERJ-2RKF40R2X is rated at 0.1W (1/10W). All other electrical parameters (resistance, tolerance, temperature coefficient, operating temperature) are identical. ERJ-2RKF40R2X includes Automotive AEC-Q200 qualification. ERJ-2RKF40R2X is suitable for applications requiring higher thermal performance.

Q: Are all substitute parts available in the same packaging format as RC1005F40R2CS?

A: RC1005F40R2CS is supplied in Tape & Reel (TR) format. Substitute parts are available in both Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. Packaging format does not affect electrical or mechanical compatibility. Selection of packaging format depends on assembly process requirements.

Q: Can I use AC0402FR-0740R2L in non-automotive applications?

A: Yes. AC0402FR-0740R2L meets all electrical and mechanical requirements for RC1005F40R2CS and is suitable for general-purpose applications. Automotive AEC-Q200 qualification is an additional feature that does not restrict use in non-automotive circuits.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 classification indicates unlimited shelf life and floor life without moisture bake requirements. Both RC1005F40R2CS and all substitute parts are rated MSL 1, meaning they do not require special moisture control handling or pre-reflow baking procedures.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RC1005F40R2CS and all listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component use.

Q: What is the height difference between AC0402FR-0740R2L (0.37mm) and other substitutes (0.40mm)?

A: AC0402FR-0740R2L has a maximum seated height of 0.37mm compared to 0.40mm for other substitutes. This 0.03mm difference is within typical PCB assembly tolerances and does not affect electrical performance or mechanical compatibility in standard 0402 package footprints.

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