RC2012F681CS 680 Ohm 1% 1/8W 0805 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC2012F681CS is a thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 680 Ohms with ±1% tolerance and 0.125W (1/8W) power dissipation in 0805 (2012 Metric) package format. The part is RoHS3 compliant, moisture resistant, and rated for operating temperatures from -55°C to 155°C. Product status is Active with 1060 units currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, package type, and compliance certifications to ensure direct functional interchangeability in circuit applications.

Key Parameters

Parameter	Value
Resistance	680 Ohms
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 (MSL)	1 (Unlimited)
RoHS Status	RoHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with the RC2012F681CS:

Direct Substitutes (Electrical & Mechanical Equivalents): Parts meeting all core electrical parameters (680 Ohms, ±1% tolerance, 0.125W power rating) in the identical 0805 package with matching temperature coefficient (±100ppm/°C) and operating range (-55°C to 155°C). These parts are interchangeable without circuit modification.

Similar Substitutes (Enhanced Features or Modified Specifications): Parts sharing the same resistance value, tolerance, package, and temperature range but with enhanced features (automotive AEC-Q200 certification, pulse withstanding capability, anti-sulfur treatment) or modified power ratings (0.5W instead of 0.125W). These parts are functionally compatible but may introduce different performance characteristics or certifications.

Key Parameters Determining Substitution:

Resistance value: 680 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature: -55°C to 155°C (exact match required)
Composition: Thick Film (exact match required)
Power Rating: 0.125W for direct substitutes; 0.5W for similar substitutes with enhanced capability

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS Status	MSL
RC2012F681CS	Samsung Electro-Mechanics	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Moisture Resistant	RoHS3	1
CR0805-FX-6800ELF	Bourns Inc.	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Moisture Resistant	RoHS3	1
CRG0805F680R	TE Connectivity Passive Product	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	—	RoHS3	1
ERJ-6ENF6800V	Panasonic Electronic Components	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	RoHS3	1
KTR10EZPF6800	Rohm Semiconductor	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, High Voltage	RoHS3	1
RC0805FR-07680RL	YAGEO	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Moisture Resistant	RoHS3	1
RMCF0805FT680R	Stackpole Electronics Inc	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	RoHS3	1
AC0805FR-07680RL	YAGEO	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	RoHS3	1
CRCW0805680RFKEA	Vishay Dale	680 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	RoHS3	1
CRCW0805680RFKEAHP	Vishay Dale	680 Ω	±1%	0.5	0805	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	RoHS3	1
ERJ-UP6F6800V	Panasonic Electronic Components	680 Ω	±1%	0.5	0805	±100ppm/°C	-55 to 155°C	Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding	RoHS3	1

Engineering Selection Recommendations

For Direct Substitution (No Circuit Modification Required):

The following parts are electrically and mechanically equivalent to RC2012F681CS and may be selected based on availability and supply chain considerations:

CR0805-FX-6800ELF (Bourns Inc.): Direct equivalent with moisture resistant thick film composition. 42,835 units in stock.
CRG0805F680R (TE Connectivity Passive Product): Direct equivalent without specified moisture resistant feature. 14,120 units in stock.
RC0805FR-07680RL (YAGEO): Direct equivalent with moisture resistant thick film composition. 500,200 units in stock (highest availability).

For Applications Requiring Automotive Certification (AEC-Q200):

The following parts provide identical electrical specifications with automotive qualification:

ERJ-6ENF6800V (Panasonic Electronic Components): AEC-Q200 rated. 182,406 units in stock.
KTR10EZPF6800 (Rohm Semiconductor): AEC-Q200 rated with high voltage capability. 787 units in stock.
RMCF0805FT680R (Stackpole Electronics Inc): AEC-Q200 rated. 342,887 units in stock.
AC0805FR-07680RL (YAGEO): AEC-Q200 rated with moisture resistant feature. 68,168 units in stock.
CRCW0805680RFKEA (Vishay Dale): AEC-Q200 rated. 20,300 units in stock.

For Enhanced Power Dissipation (0.5W Rating):

The following parts provide higher power capability in the same package footprint:

CRCW0805680RFKEAHP (Vishay Dale): 0.5W power rating with pulse withstanding capability and AEC-Q200 certification. 98,161 units in stock.
ERJ-UP6F6800V (Panasonic Electronic Components): 0.5W power rating with anti-sulfur, pulse withstanding, and AEC-Q200 features. 6,039 units in stock.

All listed parts maintain RoHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and identical operating temperature range (-55°C to 155°C).

Frequently Asked Questions (FAQ)

Q: Can I use a 0.5W rated resistor (CRCW0805680RFKEAHP or ERJ-UP6F6800V) as a substitute for the 0.125W RC2012F681CS?

A: Yes. A higher power-rated resistor is functionally compatible in circuits designed for the lower power rating. The 0.5W parts provide additional thermal margin and pulse withstanding capability. No circuit modification is required. The physical package dimensions remain identical (0805/2012 Metric).

Q: What is the difference between direct substitutes and similar substitutes?

A: Direct substitutes (CR0805-FX-6800ELF, CRG0805F680R, RC0805FR-07680RL) match all electrical and mechanical specifications of the RC2012F681CS, including 0.125W power rating. Similar substitutes include parts with enhanced features such as automotive AEC-Q200 certification or higher power ratings (0.5W). Similar substitutes are compatible but introduce additional certifications or capabilities not present in the original part.

Q: Are AEC-Q200 rated parts (ERJ-6ENF6800V, RMCF0805FT680R, etc.) suitable for non-automotive applications?

A: Yes. AEC-Q200 certification indicates automotive-grade reliability and testing. These parts exceed standard industrial specifications and are fully compatible with non-automotive applications. They may be selected for applications requiring enhanced reliability or extended operating life.

Q: Does the moisture resistant feature affect substitution compatibility?

A: No. Moisture resistant thick film composition is a feature that enhances performance in humid environments but does not affect electrical substitution. Parts with moisture resistant features (RC2012F681CS, CR0805-FX-6800ELF, RC0805FR-07680RL, AC0805FR-07680RL) are directly interchangeable with parts without this specification (CRG0805F680R).

Q: Can I substitute RC2012F681CS with YAGEO RC0805FR-07680RL?

A: Yes. YAGEO RC0805FR-07680RL is a direct electrical and mechanical equivalent with identical 680 Ohm resistance, ±1% tolerance, 0.125W power rating, 0805 package, and operating temperature range. It features moisture resistant thick film composition and RoHS3 compliance. 500,200 units are in stock, providing high availability.

Q: What is the significance of the ±100ppm/°C temperature coefficient?

A: The ±100ppm/°C temperature coefficient specifies the maximum resistance change per degree Celsius across the operating temperature range. All listed substitute parts maintain this identical specification, ensuring equivalent temperature stability and predictable performance across -55°C to 155°C.

Q: Are there any packaging format differences between substitute parts?

A: All substitute parts use the 0805 (2012 Metric) package format with identical physical dimensions (0.079" L × 0.049" W / 2.00mm × 1.25mm). Packaging format (Tape & Reel or Cut Tape & Digi-Reel) affects supply and handling but does not affect electrical or mechanical compatibility. Height variations (0.020" to 0.028" / 0.50mm to 0.70mm) are within standard PCB assembly tolerances.

Q: Which substitute part offers the best availability?

A: YAGEO RC0805FR-07680RL offers the highest inventory level with 500,200 units in stock. This part is a direct equivalent to RC2012F681CS with moisture resistant thick film composition and RoHS3 compliance.

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