RCS2012F6811CS Equivalent & Substitute Parts

Part Overview

The RCS2012F6811CS is a 6.81 kOhms ±1% 0.125W (1/8W) chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package. This thick film resistor features anti-sulfur and moisture-resistant properties with a temperature coefficient of ±100ppm/°C and operating range of -55°C to 155°C. The part is Active in product status and ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct circuit board replacement capability.

Key Parameters

Parameter	Value
Resistance	6.81 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the RCS2012F6811CS are qualified based on the following criteria:

Electrical Parameters (Critical for Substitution):

Resistance value: 6.81 kOhms
Tolerance: ±1%
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C

Mechanical Parameters (Critical for Substitution):

Package type: 0805 (2012 Metric)
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of terminations: 2

Power Rating Consideration: The primary part is rated at 0.125W (1/8W). One substitute part (RCS08056K81FKEA) is rated at 0.5W (1/2W), which represents a higher power capability and is functionally compatible for applications requiring the 0.125W specification.

Compliance and Features: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and thick film composition. Additional certifications such as Automotive AEC-Q200 are present in several substitutes but do not prevent substitution in non-automotive applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Height Max	RoHS Status	AEC-Q200
RCS2012F6811CS	Samsung Electro-Mechanics	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.66mm	ROHS3	No
AC0805FR-076K81L	YAGEO	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.60mm	ROHS3	Yes
CRCW08056K81FKEA	Vishay Dale	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	ROHS3	Yes
CRCW08056K81FKTA	Vishay Dale	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	RoHS non-compliant	Yes
ERJ-6ENF6811V	Panasonic Electronic Components	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.70mm	ROHS3	Yes
RC0805FR-076K81L	YAGEO	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.60mm	ROHS3	No
RCS08056K81FKEA	Vishay Dale	6.81 kOhms	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	ROHS3	Yes
RMCF0805FT6K81	Stackpole Electronics Inc	6.81 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.65mm	ROHS3	Yes

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

The following parts are direct substitutes with identical electrical and mechanical specifications:

AC0805FR-076K81L (YAGEO): ROHS3 compliant, Automotive AEC-Q200 rated, 0.60mm seated height
CRCW08056K81FKEA (Vishay Dale): ROHS3 compliant, Automotive AEC-Q200 rated, 0.50mm seated height
ERJ-6ENF6811V (Panasonic Electronic Components): ROHS3 compliant, Automotive AEC-Q200 rated, 0.70mm seated height
RC0805FR-076K81L (YAGEO): ROHS3 compliant, 0.60mm seated height
RMCF0805FT6K81 (Stackpole Electronics Inc): ROHS3 compliant, Automotive AEC-Q200 rated, 0.65mm seated height

Conditional Substitute (Higher Power Rating):

RCS08056K81FKEA (Vishay Dale): Rated at 0.5W (1/2W) instead of 0.125W. This part is suitable for applications where the circuit design permits higher power dissipation capability. ROHS3 compliant, Automotive AEC-Q200 rated, 0.50mm seated height.

Non-Recommended Substitute (Compliance Issue):

CRCW08056K81FKTA (Vishay Dale): RoHS non-compliant and REACH Affected. Use only in applications where RoHS3 compliance is not required.

Selection Basis:

All recommended substitutes maintain the critical electrical parameters (6.81 kOhms ±1%, ±100ppm/°C, -55°C to 155°C operating range) and mechanical compatibility (0805 package, 2mm x 1.25mm dimensions). Seated height variations (0.50mm to 0.70mm) are within acceptable tolerances for standard PCB assembly processes. ROHS3 compliance is maintained across all primary recommendations.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RCS2012F6811CS with any of the listed parts without circuit redesign?

A: Yes, all primary substitute parts (AC0805FR-076K81L, CRCW08056K81FKEA, ERJ-6ENF6811V, RC0805FR-076K81L, and RMCF0805FT6K81) are electrically and mechanically compatible. They share identical resistance values (6.81 kOhms), tolerance (±1%), power rating (0.125W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The 0805 package and 2mm x 1.25mm dimensions ensure direct PCB footprint compatibility.

Q: What is the significance of the seated height differences among substitute parts?

A: Seated height variations (ranging from 0.50mm to 0.70mm) reflect manufacturing differences between suppliers but do not affect electrical performance or standard PCB assembly compatibility. These variations are within industry tolerances for 0805 chip resistors and do not require PCB layout modifications.

Q: Is the RCS08056K81FKEA (0.5W rated) suitable as a substitute for the 0.125W RCS2012F6811CS?

A: The RCS08056K81FKEA is electrically and mechanically compatible and can be used in applications designed for 0.125W operation. The higher power rating (0.5W) provides additional thermal margin and does not create circuit incompatibility. However, verify that the circuit design does not depend on the specific thermal characteristics of the 0.125W part.

Q: What is the difference between parts with and without Automotive AEC-Q200 certification?

A: Automotive AEC-Q200 certification indicates qualification for automotive applications with enhanced reliability testing. Parts without this certification (RC0805FR-076K81L and the main part RCS2012F6811CS) are suitable for general industrial and consumer applications. The absence of AEC-Q200 does not indicate inferior quality for non-automotive use.

Q: Should I use CRCW08056K81FKTA despite its RoHS non-compliance?

A: CRCW08056K81FKTA is RoHS non-compliant and REACH Affected. Use this part only in applications or regions where RoHS3 compliance is not mandated. For new designs or applications requiring regulatory compliance, select from the ROHS3-compliant alternatives.

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

A: Yes, all substitute parts are supplied in Tape & Reel (TR) packaging, matching the RCS2012F6811CS packaging format. This ensures compatibility with automated PCB assembly processes.

Q: What is the Moisture Sensitivity Level (MSL) for all parts?

A: All parts, including the main part and all substitutes, have MSL 1 (Unlimited) rating. This indicates unlimited shelf life without special moisture control requirements, simplifying inventory management and storage procedures.

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