RCS2012J683CS 68kΩ 0805 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RCS2012J683CS is a 68 kOhms ±5% 0.125W (1/8W) thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with anti-sulfur and moisture-resistant properties. The part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1) and operates across the temperature range of -55°C to 155°C.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when enhanced specifications such as improved tolerance or higher power ratings are needed for specific circuit applications.

Key Parameters

Parameter	Value
Resistance	68 kOhms
Tolerance	±5%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Features	Anti-Sulfur, Moisture Resistant
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012J683CS is determined by the following critical parameters:

Primary Substitution Criteria:

Resistance value: 68 kOhms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C (exact match required)
Composition: Thick Film (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (exact match required)

Secondary Substitution Parameters (Allowable Variations):

Tolerance: ±5% (primary) or ±1% (tighter tolerance acceptable as direct substitute)
Power Rating: 0.125W (primary) or higher ratings (0.25W, 0.5W acceptable for uprating scenarios)
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) formats are interchangeable
Manufacturer: Multiple qualified manufacturers acceptable
Features: Anti-Sulfur and Moisture Resistant features may vary; AEC-Q200 automotive qualification is optional enhancement

Substitute parts are grouped into three categories based on tolerance and power rating specifications while maintaining all primary criteria.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS	MSL
RCS2012J683CS	Samsung Electro-Mechanics	68k	±5%	0.125	0805	±100ppm/°C	-55~155°C	Anti-Sulfur, Moisture Resistant	ROHS3	1
RC2012F683CS	Samsung Electro-Mechanics	68k	±1%	0.125	0805	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
AC0805FR-0768KL	YAGEO	68k	±1%	0.125	0805	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
CRCW080568K0FKEA	Vishay Dale	68k	±1%	0.125	0805	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1
CRCW080568K0FKEAHP	Vishay Dale	68k	±1%	0.5	0805	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	1
ERJ-6ENF6802V	Panasonic Electronic Components	68k	±1%	0.125	0805	±100ppm/°C	-55~155°C	Automotive AEC-Q200	ROHS3	1
ERJ-UP6F6802V	Panasonic Electronic Components	68k	±1%	0.5	0805	±100ppm/°C	-55~155°C	Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding	ROHS3	1
RC0805FR-0768KL	YAGEO	68k	±1%	0.125	0805	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
RC0805JR-0768KL	YAGEO	68k	±5%	0.125	0805	±100ppm/°C	-55~155°C	Moisture Resistant	ROHS3	1
RCS080568K0FKEA	Vishay Dale	68k	±1%	0.5	0805	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	1
RPC0805JT68K0	Stackpole Electronics Inc	68k	±5%	0.25	0805	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	1

Engineering Selection Recommendations

Direct Equivalent (Same Tolerance & Power Rating):

RC0805JR-0768KL (YAGEO) is the direct equivalent to RCS2012J683CS. Both parts share identical specifications: 68 kOhms ±5% tolerance, 0.125W power rating, 0805 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both are ROHS3 compliant with MSL 1. This part is suitable for direct substitution in applications where the original Samsung part is unavailable.

Tighter Tolerance Substitutes (±1% Tolerance, Same Power Rating):

RC2012F683CS (Samsung Electro-Mechanics), AC0805FR-0768KL (YAGEO), CRCW080568K0FKEA (Vishay Dale), ERJ-6ENF6802V (Panasonic), and RC0805FR-0768KL (YAGEO) all provide ±1% tolerance with 0.125W power rating. These parts are suitable for applications requiring improved tolerance performance while maintaining the original power specification. All maintain ROHS3 compliance and MSL 1 rating.

Higher Power Rating Substitutes (0.25W or 0.5W):

RPC0805JT68K0 (Stackpole Electronics Inc) provides 0.25W power rating with ±5% tolerance. CRCW080568K0FKEAHP (Vishay Dale), ERJ-UP6F6802V (Panasonic), and RCS080568K0FKEA (Vishay Dale) provide 0.5W power rating with ±1% tolerance. These parts are suitable for applications requiring higher power dissipation capability or enhanced pulse withstanding characteristics.

Automotive-Qualified Substitutes:

AC0805FR-0768KL, CRCW080568K0FKEA, CRCW080568K0FKEAHP, ERJ-6ENF6802V, ERJ-UP6F6802V, RCS080568K0FKEA, and RPC0805JT68K0 all carry AEC-Q200 automotive qualification. These parts are suitable for automotive and industrial applications requiring automotive-grade component certification.

All substitute parts maintain the critical parameters: 68 kOhms resistance, 0805 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, ROHS3 compliance, and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-0768KL replace RCS2012J683CS directly?

A: Yes. RC0805JR-0768KL is a direct equivalent. Both parts have identical resistance (68 kOhms), tolerance (±5%), power rating (0.125W), package (0805), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance ratings (ROHS3, MSL 1). The parts are functionally interchangeable.

Q: What is the difference between ±5% and ±1% tolerance substitutes?

A: Tolerance specifies the allowable deviation from the nominal resistance value. RCS2012J683CS with ±5% tolerance allows resistance values between 64.6 kOhms and 71.4 kOhms. Substitute parts with ±1% tolerance (such as RC2012F683CS or AC0805FR-0768KL) allow resistance values between 67.32 kOhms and 68.68 kOhms. The ±1% tolerance provides tighter resistance control, suitable for precision circuit applications. Both are acceptable substitutes; selection depends on circuit tolerance requirements.

Q: Can I use a 0.5W rated resistor instead of the 0.125W original?

A: Yes. CRCW080568K0FKEAHP, ERJ-UP6F6802V, and RCS080568K0FKEA are 0.5W rated substitutes with 68 kOhms resistance and 0805 package. Higher power ratings are acceptable for uprating scenarios where increased power dissipation capability is beneficial or required. The 0.5W parts maintain all other critical parameters including temperature coefficient, operating range, and compliance ratings. Physical dimensions remain within 0805 package specifications.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this rating (AC0805FR-0768KL, CRCW080568K0FKEA, CRCW080568K0FKEAHP, ERJ-6ENF6802V, ERJ-UP6F6802V, RCS080568K0FKEA, RPC0805JT68K0) have undergone rigorous testing for automotive applications including temperature cycling, humidity resistance, and reliability verification. These parts are suitable for automotive and industrial applications requiring automotive-grade components. The original RCS2012J683CS does not carry AEC-Q200 qualification.

Q: Are Tape & Reel (TR) and Cut Tape (CT) packaging formats interchangeable?

A: Yes. Tape & Reel and Cut Tape formats contain identical components; the difference is in the delivery and handling format. Tape & Reel packaging is suitable for automated assembly processes, while Cut Tape is suitable for manual assembly or smaller quantity requirements. The electrical and mechanical specifications of the resistor remain identical regardless of packaging format. Selection depends on assembly process requirements, not component performance.

Q: Can I substitute RCS2012J683CS with a part from a different manufacturer?

A: Yes. All substitute parts listed maintain the critical electrical and mechanical parameters: 68 kOhms resistance, 0805 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, ROHS3 compliance, and MSL 1 rating. Parts from YAGEO (RC0805JR-0768KL, AC0805FR-0768KL, RC0805FR-0768KL), Vishay Dale (CRCW080568K0FKEA, CRCW080568K0FKEAHP, RCS080568K0FKEA), Panasonic (ERJ-6ENF6802V, ERJ-UP6F6802V), and Stackpole Electronics (RPC0805JT68K0) are all qualified substitutes. Manufacturer selection may depend on availability, supply chain considerations, or specific application requirements.

Q: What is the significance of anti-sulfur and moisture-resistant features?

A: Anti-sulfur and moisture-resistant features enhance component reliability in harsh environmental conditions. The original RCS2012J683CS includes both features. Substitute parts maintain moisture resistance; ERJ-UP6F6802V additionally includes anti-sulfur protection. These features prevent corrosion and degradation in high-humidity, high-sulfur, or corrosive environments. For applications in standard indoor environments, parts without these specific features remain functionally equivalent.

Q: Is the RCS2012J683CS still in active production?

A: Yes. RCS2012J683CS is classified as Active product status, indicating current production and availability. However, equivalent and substitute parts provide supply chain flexibility and may offer alternative features such as improved tolerance, higher power ratings, or automotive qualification when needed for specific applications.

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