RCS2012F4022CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F4022CS is a 40.2 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format with 0.125W power rating. This component is classified as Active product status with anti-sulfur and moisture-resistant characteristics. The part is ROHS3 compliant and suitable for general industrial applications requiring stable resistance values across the -55°C to 155°C operating temperature range.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements permit selection from qualified alternative manufacturers meeting identical or superior electrical and mechanical specifications.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	40.2 kOhms	Core electrical requirement
Tolerance	±1%	Precision specification
Power Rating	0.125W (1/8W)	Thermal dissipation capacity
Package / Case	0805 (2012 Metric)	Physical form factor
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Temperature stability
Operating Temperature Range	-55°C ~ 155°C	Environmental limits
Terminations	2	Connection points
RoHS Status	ROHS3 Compliant	Regulatory compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F4022CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 40.2 kOhms
Tolerance: ±1%
Package / Case: 0805 (2012 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C
Number of Terminations: 2
Moisture Sensitivity Level: 1 (Unlimited)

Power Rating Consideration: Substitute parts are grouped into two categories based on power rating:

1/8W (0.125W) Equivalents: Direct substitutes with identical power dissipation capacity
1/2W (0.5W) Equivalents: Higher power rating variants suitable for applications permitting increased thermal margin

Compliance and Features: Substitute parts may include additional certifications (AEC-Q200 automotive qualification) or enhanced features (pulse withstanding capability) without compromising base electrical specifications. RoHS3 compliance is maintained across all qualified substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max	RoHS Status	Features
RCS2012F4022CS	Samsung Electro-Mechanics	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.66mm	ROHS3	Anti-Sulfur, Moisture Resistant
AC0805FR-0740K2L	YAGEO	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.60mm	ROHS3	Automotive AEC-Q200, Moisture Resistant
CRCW080540K2FKEA	Vishay Dale	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.50mm	ROHS3	Automotive AEC-Q200
CRCW080540K2FKEAHP	Vishay Dale	40.2 kΩ	±1%	0.5	0805	±100ppm/°C	-55~155°C	0.50mm	ROHS3	Automotive AEC-Q200, Pulse Withstanding
CRCW080540K2FKTA	Vishay Dale	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.50mm	RoHS Non-compliant	Automotive AEC-Q200
ERJ-6ENF4022V	Panasonic Electronic Components	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.70mm	ROHS3	Automotive AEC-Q200
RC0805FR-0740K2L	YAGEO	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.60mm	ROHS3	Moisture Resistant
RCS080540K2FKEA	Vishay Dale	40.2 kΩ	±1%	0.5	0805	±100ppm/°C	-55~155°C	0.50mm	ROHS3	Automotive AEC-Q200, Pulse Withstanding
RMCF0805FT40K2	Stackpole Electronics Inc	40.2 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.65mm	ROHS3	Automotive AEC-Q200

Engineering Selection Recommendations

Primary Substitutes (Direct 1/8W Equivalents with ROHS3 Compliance):

The following parts provide direct electrical and mechanical equivalence to RCS2012F4022CS with ROHS3 compliance maintained:

CRCW080540K2FKEA (Vishay Dale): Automotive AEC-Q200 qualified with lowest seated height (0.50mm), suitable for space-constrained PCB layouts
AC0805FR-0740K2L (YAGEO): Automotive AEC-Q200 qualified with 0.60mm seated height, high inventory availability
ERJ-6ENF4022V (Panasonic Electronic Components): Automotive AEC-Q200 qualified with highest inventory level (117,876 pcs), available in Cut Tape & Digi-Reel packaging
RMCF0805FT40K2 (Stackpole Electronics Inc): Automotive AEC-Q200 qualified with 0.65mm seated height, high inventory availability (246,451 pcs)
RC0805FR-0740K2L (YAGEO): Non-automotive variant with moisture resistance, highest inventory availability (304,186 pcs), suitable for non-automotive applications

Higher Power Variants (1/2W Equivalents with Enhanced Thermal Margin):

When circuit design permits increased power dissipation capacity:

CRCW080540K2FKEAHP (Vishay Dale): 0.5W rating with pulse withstanding capability, Automotive AEC-Q200 qualified
RCS080540K2FKEA (Vishay Dale): 0.5W rating with pulse withstanding capability, Automotive AEC-Q200 qualified

Non-Recommended Substitute:

CRCW080540K2FKTA (Vishay Dale): RoHS non-compliant status disqualifies this part for applications requiring ROHS3 compliance

Packaging Consideration:

The main part RCS2012F4022CS is supplied in Tape & Reel (TR) format. Substitutes ERJ-6ENF4022V and RC0805FR-0740K2L are available in Cut Tape (CT) & Digi-Reel format, suitable for lower-volume applications or manual assembly processes.

Frequently Asked Questions (FAQ)

Q1: Can CRCW080540K2FKEAHP (0.5W) be used as a direct replacement for RCS2012F4022CS (0.125W)?

A: Yes, from an electrical and mechanical standpoint. The 0.5W variant provides identical resistance, tolerance, temperature coefficient, and operating range. The higher power rating represents increased thermal dissipation capacity and does not create incompatibility. However, verify that the circuit design does not impose specific power rating constraints or thermal management requirements that would be affected by the higher rating.

Q2: What is the significance of AEC-Q200 automotive qualification on substitute parts?

A: AEC-Q200 is an automotive industry qualification standard indicating the part meets stringent reliability, temperature cycling, and failure rate requirements. Parts bearing this certification (AC0805FR-0740K2L, CRCW080540K2FKEA, ERJ-6ENF4022V, RMCF0805FT40K2, and others) are qualified for automotive applications. The main part RCS2012F4022CS does not carry this certification but remains suitable for general industrial applications.

Q3: Why do substitute parts have different seated heights (0.50mm to 0.70mm)?

A: Seated height variation is a normal manufacturing tolerance within the 0805 package specification. All listed parts maintain the same 0.079" L x 0.049" W (2.00mm x 1.25mm) footprint. Height differences of 0.06mm to 0.20mm do not affect electrical performance or standard PCB assembly processes. Verify height constraints only if the application involves space-critical stacking or clearance requirements.

Q4: Is RC0805FR-0740K2L suitable for applications requiring anti-sulfur protection?

A: RC0805FR-0740K2L is specified as moisture resistant but does not explicitly list anti-sulfur protection. The main part RCS2012F4022CS includes anti-sulfur features. If the application requires documented anti-sulfur protection, select alternatives explicitly listing this feature or verify environmental exposure conditions do not necessitate this protection level.

Q5: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape in reel format, optimized for high-volume automated assembly. Cut Tape (CT) & Digi-Reel packaging provides smaller quantities on cut tape segments or specialty reels, suitable for lower-volume production, prototyping, or manual assembly. Both formats contain identical components; packaging selection depends on production volume and assembly methodology.

Q6: Can CRCW080540K2FKTA be used despite RoHS non-compliance?

A: CRCW080540K2FKTA is RoHS non-compliant and REACH affected. Use this part only in applications where regulatory compliance is not required. For any application subject to RoHS3 or REACH regulations, select from the compliant alternatives listed in the Primary Substitutes section.

Q7: Which substitute offers the best inventory availability?

A: RC0805FR-0740K2L (YAGEO) provides the highest inventory level at 304,186 pcs. ERJ-6ENF4022V (Panasonic) offers 117,876 pcs, and RMCF0805FT40K2 (Stackpole) provides 246,451 pcs. For immediate availability in automotive-qualified variants, RMCF0805FT40K2 and ERJ-6ENF4022V are preferred options.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message