RC0603F122CS Equivalent & Substitute Parts Reference

Part Overview

The RC0603F122CS is a 1.2 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is classified as Active product status with full RoHS3 compliance and MSL Level 1 rating. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings align within the allowed parameter tolerances for this resistor category.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Resistance	1.2	kOhms	Critical - Must match exactly
Tolerance	±1%	%	Critical - Defines precision class
Power Rating	0.05	W (1/20W)	Critical - Thermal performance requirement
Package / Case	0201 (0603 Metric)	-	Critical - Physical footprint compatibility
Composition	Thick Film	-	Important - Technology type
Operating Temperature Range	-55°C ~ 125°C (main) / -55°C ~ 155°C (substitute)	°C	Important - Environmental capability
Temperature Coefficient	±250ppm/°C (main) / ±100ppm/°C (substitute)	ppm/°C	Important - Stability characteristic
RoHS Status	ROHS3 Compliant	-	Important - Regulatory compliance
MSL Rating	1 (Unlimited)	-	Important - Moisture sensitivity
Number of Terminations	2	-	Critical - Electrical connection points

Substitute Part Grouping Explanation

Substitution eligibility for the RC0603F122CS is determined by strict alignment of the following parameters:

Critical Parameters (Must Match Exactly):

Resistance value: 1.2 kOhms
Tolerance: ±1%
Power rating: 0.05W (1/20W)
Package designation: 0201 (0603 Metric)
Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
Number of terminations: 2

Important Parameters (Must Be Compatible or Superior):

Composition: Thick Film technology
Operating temperature range: Minimum -55°C to 125°C
Temperature coefficient: ±250ppm/°C or better
RoHS3 compliance: Required
MSL rating: Level 1 or equivalent

The CRCW02011K20FKED by Vishay Dale meets all critical parameters and demonstrates superior performance in operating temperature range (-55°C to 155°C) and temperature coefficient (±100ppm/°C), making it a valid substitute.

Parameter Comparison

Parameter	RC0603F122CS (Samsung)	CRCW02011K20FKED (Vishay Dale)	Match Status
Resistance	1.2 kOhms	1.2 kOhms	Exact Match
Tolerance	±1%	±1%	Exact Match
Power Rating	0.05W (1/20W)	0.05W (1/20W)	Exact Match
Package / Case	0201 (0603 Metric)	0201 (0603 Metric)	Exact Match
Size / Dimension	0.024" L x 0.012" W (0.60mm x 0.30mm)	0.024" L x 0.012" W (0.60mm x 0.30mm)	Exact Match
Height - Seated (Max)	0.010" (0.26mm)	0.010" (0.26mm)	Exact Match
Number of Terminations	2	2	Exact Match
Composition	Thick Film	Thick Film	Exact Match
Operating Temperature	-55°C ~ 125°C	-55°C ~ 155°C	Compatible (Substitute Superior)
Temperature Coefficient	±250ppm/°C	±100ppm/°C	Compatible (Substitute Superior)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Exact Match
MSL Rating	1 (Unlimited)	1 (Unlimited)	Exact Match

Engineering Selection Recommendations

RC0603F122CS (Samsung Electro-Mechanics):

Active product status with established supply chain
RoHS3 compliant and REACH unaffected
MSL Level 1 rating provides unlimited shelf life
Suitable for standard industrial and consumer applications within -55°C to 125°C operating range
Current inventory: 775 Pcs

CRCW02011K20FKED (Vishay Dale):

Active product status with extensive availability
RoHS3 compliant
MSL Level 1 rating provides unlimited shelf life
Extended operating temperature range (-55°C to 155°C) supports high-temperature applications
Superior temperature coefficient (±100ppm/°C vs ±250ppm/°C) provides enhanced stability
Available in both Cut Tape (CT) and Digi-Reel® packaging options
Current inventory: 41,883 Pcs

Both parts satisfy regulatory compliance requirements and are suitable for direct substitution in PCB assembly applications. Selection between manufacturers should be based on supply chain preference, packaging format requirements, and application temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can CRCW02011K20FKED replace RC0603F122CS in existing designs?

A: Yes. Both components share identical electrical specifications (1.2 kOhms ±1%, 0.05W), identical physical dimensions (0201 package), and identical termination configuration. PCB footprints are directly compatible.

Q: What is the significance of the different temperature coefficients?

A: The RC0603F122CS has a temperature coefficient of ±250ppm/°C, while the CRCW02011K20FKED has ±100ppm/°C. The lower coefficient in the Vishay part indicates superior resistance stability across temperature variations. For precision applications requiring minimal resistance drift, the Vishay substitute offers better performance.

Q: Are there packaging differences between these parts?

A: The RC0603F122CS is supplied in Cut Tape (CT) packaging. The CRCW02011K20FKED is available in both Cut Tape (CT) and Digi-Reel® (TR) formats. Both packaging options are compatible with standard pick-and-place assembly equipment.

Q: Does the extended temperature range of the Vishay part affect compatibility?

A: No. The CRCW02011K20FKED operating range of -55°C to 155°C encompasses the RC0603F122CS range of -55°C to 125°C. The substitute is fully compatible for all applications within the original part's temperature specifications and supports additional high-temperature applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RC0603F122CS and CRCW02011K20FKED are ROHS3 compliant with MSL Level 1 rating, meeting current regulatory requirements for lead-free and halogen-free manufacturing standards.

Q: What is the basis for substitution eligibility?

A: Substitution is based on matching critical electrical parameters (resistance, tolerance, power rating), identical mechanical dimensions and package type (0201), identical composition (thick film), and compatible or superior environmental ratings (operating temperature, temperature coefficient, compliance certifications).

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