RCS2012J682CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012J682CS is a 6.8 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) in the 0805 (2012 Metric) package. This component features anti-sulfur and moisture-resistant properties, operating across the temperature range of -55°C to 155°C. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and maintains an active product status. Equivalent and substitute parts are identified based on matching or superior electrical specifications, identical package dimensions, and compatible operating parameters to ensure direct circuit board compatibility.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	6.8 kOhms	Core electrical specification
Tolerance	±5%	Accuracy classification
Power Rating	0.125W (1/8W)	Thermal dissipation capacity
Package Type	0805 (2012 Metric)	Physical footprint and PCB compatibility
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Stability over temperature range
Operating Temperature Range	-55°C to 155°C	Environmental operating limits
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance
MSL Rating	1 (Unlimited)	Moisture sensitivity classification

Substitute Part Grouping Explanation

Substitute parts for the RCS2012J682CS are classified into two primary groups based on tolerance and power rating specifications:

Group 1: Direct Equivalents (±5% Tolerance, 0.125W Power Rating) These parts maintain identical electrical specifications to the main part. Substitution is unrestricted for applications requiring ±5% tolerance and 0.125W power dissipation capacity.

Group 2: Enhanced Specification Substitutes (±1% Tolerance, 0.125W Power Rating) These parts provide tighter tolerance (±1%) while maintaining the same 0.125W power rating and 0805 package. Substitution is valid for applications where improved accuracy is beneficial or required, as ±1% tolerance is a superior specification to ±5%.

Group 3: Higher Power Rating Substitutes (±1% Tolerance, 0.5W or 0.4W Power Rating) These parts offer increased power dissipation capacity (0.5W or 0.4W) with ±1% tolerance. Substitution is valid for applications requiring higher thermal headroom, though the increased power rating does not restrict use in circuits designed for 0.125W operation.

Critical Substitution Parameters:

Resistance value: 6.8 kOhms (non-negotiable)
Package: 0805 (2012 Metric) (non-negotiable for PCB compatibility)
Temperature coefficient: ±100ppm/°C (standard across all substitutes)
Operating temperature range: -55°C to 155°C (standard across all substitutes)
Composition: Thick Film (standard across all substitutes)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Package	Temp Coeff	Op. Temp Range	Features	RoHS Status	MSL
RCS2012J682CS	Samsung Electro-Mechanics	6.8 kΩ	±5%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur, Moisture Resistant	ROHS3	1
AC0805JR-076K8L	YAGEO	6.8 kΩ	±5%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
RC0805JR-076K8L	YAGEO	6.8 kΩ	±5%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3	1
AC0805FR-076K8L	YAGEO	6.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
RC0805FR-076K8L	YAGEO	6.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3	1
CRCW08056K80FKEA	Vishay Dale	6.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	1
ERJ-6ENF6801V	Panasonic Electronic Components	6.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	1
RCS08056K80FKEA	Vishay Dale	6.8 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	1
CRCW08056K80FKEAHP	Vishay Dale	6.8 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	1
ERJ-UP6F6801V	Panasonic Electronic Components	6.8 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding	ROHS3	1
ESR10EZPF6801	Rohm Semiconductor	6.8 kΩ	±1%	0.4W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	1

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): AC0805JR-076K8L and RC0805JR-076K8L are direct functional equivalents to RCS2012J682CS, maintaining ±5% tolerance and 0.125W power rating. Both parts are ROHS3 compliant with MSL 1 rating. AC0805JR-076K8L includes Automotive AEC-Q200 certification, providing additional qualification for automotive applications. RC0805JR-076K8L offers moisture-resistant composition without automotive-specific certification.

For Improved Tolerance Applications: AC0805FR-076K8L, RC0805FR-076K8L, CRCW08056K80FKEA, and ERJ-6ENF6801V provide ±1% tolerance while maintaining 0.125W power rating and 0805 package compatibility. These parts are suitable for circuits where tighter resistance accuracy improves performance. All four parts are ROHS3 compliant with MSL 1 rating. AC0805FR-076K8L and CRCW08056K80FKEA carry Automotive AEC-Q200 certification.

For Higher Power Dissipation Requirements: RCS08056K80FKEA, CRCW08056K80FKEAHP, ERJ-UP6F6801V, and ESR10EZPF6801 offer increased power ratings (0.5W or 0.4W) with ±1% tolerance. These parts accommodate circuits requiring greater thermal headroom while maintaining the 0805 package footprint. All parts include Automotive AEC-Q200 certification and pulse withstanding capability. ERJ-UP6F6801V additionally features anti-sulfur composition matching the original part's environmental protection.

Compliance Verification: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original RCS2012J682CS specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute a ±1% tolerance part for the original ±5% part? A: Yes. A ±1% tolerance part is a superior specification and provides tighter resistance accuracy. The circuit will function correctly with improved tolerance performance. This substitution is valid for all applications.

Q: What is the difference between 0.125W and 0.5W power ratings in the 0805 package? A: The power rating indicates the maximum continuous power dissipation capacity. A 0.5W part can safely dissipate more heat than a 0.125W part. Substituting a higher power-rated part (0.5W or 0.4W) into a circuit designed for 0.125W operation is valid and provides additional thermal margin. The reverse substitution (0.125W into a 0.5W circuit) is not recommended.

Q: Are all substitute parts physically compatible with the original PCB footprint? A: Yes. All substitute parts use the 0805 (2012 Metric) package with identical external dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). Physical PCB compatibility is guaranteed. Minor height variations (0.020" to 0.028" seated height) do not affect assembly or functionality.

Q: What does Automotive AEC-Q200 certification mean? A: AEC-Q200 is an automotive industry qualification standard for passive components. Parts with this certification have undergone additional reliability testing and are approved for automotive applications. This certification is optional for general industrial use but required for automotive circuit designs.

Q: Can I use a part with anti-sulfur features if the original part has this feature? A: Yes. Anti-sulfur composition provides protection against sulfur-containing environmental contaminants. If the original circuit operates in such environments, selecting a substitute with anti-sulfur features (such as ERJ-UP6F6801V) maintains this environmental protection. For general industrial environments, this feature is optional.

Q: What is the significance of pulse withstanding capability? A: Pulse withstanding capability indicates the part can handle transient overvoltage events without degradation. This feature is beneficial in circuits subject to voltage spikes or transient conditions. For standard DC applications without transient events, this feature is optional.

Q: Are there inventory considerations when selecting a substitute? A: Inventory levels vary by part number and manufacturer. CRCW08056K80FKEA (Vishay Dale) and RC0805FR-076K8L (YAGEO) maintain the highest inventory levels (1,000,400 and 1,254,135 units respectively), providing supply chain reliability. Selection should balance technical requirements with supply availability.

Q: Do all substitute parts have the same temperature coefficient? A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient, matching the original RCS2012J682CS specification. This ensures consistent resistance stability across the -55°C to 155°C operating temperature range.

Q: What packaging options are available for these substitute parts? A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats. Tape & Reel packaging is standard for high-volume automated assembly. Cut Tape & Digi-Reel® packaging is suitable for lower-volume or manual assembly operations. Package format does not affect electrical performance.

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