RC2012F8660CS 866 Ohm 1% 1/8W 0805 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC2012F8660CS is a thick film chip resistor manufactured by Samsung Electro-Mechanics with a resistance value of 866 Ohms and ±1% tolerance. This 0805 (2012 Metric) package component is rated for 0.125W (1/8W) power dissipation and operates across the temperature range of -55°C to 155°C. The part features moisture-resistant construction and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

The RC2012F8660CS maintains Active product status with 901 pieces currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility. Alternative sources provide equivalent performance for applications requiring component substitution due to supply constraints, design flexibility, or specific application requirements such as automotive qualification.

Key Parameters

Parameter	Value	Unit
Resistance	866	Ohms
Tolerance	±1%	-
Power Rating	0.125	W (1/8W)
Package / Case	0805 (2012 Metric)	-
Composition	Thick Film	-
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Moisture Sensitivity Level	1 (Unlimited)	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012F8660CS is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value must be 866 Ohms with ±1% tolerance. Power rating must be 0.125W (1/8W). Temperature coefficient must be ±100ppm/°C. Operating temperature range must span -55°C to 155°C minimum.

Mechanical Specifications: Package designation must be 0805 (2012 Metric). Physical dimensions must be 0.079" L x 0.049" W (2.00mm x 1.25mm). Height seated maximum must not exceed 0.026" (0.65mm) for standard compatibility, though minor variations up to 0.028" (0.70mm) are acceptable within 0805 package tolerance.

Material & Construction: Composition must be Thick Film. Moisture resistance is a feature of the main part; substitute parts may include this feature or automotive AEC-Q200 qualification as equivalent or enhanced alternatives.

Compliance: All substitute parts must maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and REACH Unaffected status to ensure regulatory equivalence.

Substitute parts are classified as Direct Substitutes when all parameters match exactly, and Similar Substitutes when minor dimensional variations or enhanced features (such as automotive qualification) are present while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	RC2012F8660CS (Samsung)	ERJ-6ENF8660V (Panasonic)	KTR10EZPF8660 (Rohm)	RC0805FR-07866RL (YAGEO)	RMCF0805FT866R (Stackpole)	CRCW0805866RFKEA (Vishay)	MCR10ERTF8660 (Rohm)
Resistance	866 Ω	866 Ω	866 Ω	866 Ω	866 Ω	866 Ω	866 Ω
Tolerance	±1%	±1%	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W	0.125W	0.125W
Package	0805	0805	0805	0805	0805	0805	0805
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C
Operating Temperature	-55 to 155°C	-55 to 155°C	-55 to 155°C	-55 to 155°C	-55 to 155°C	-55 to 155°C	-55 to 155°C
Height - Seated (Max)	0.026" (0.65mm)	0.028" (0.70mm)	0.026" (0.65mm)	0.024" (0.60mm)	0.026" (0.65mm)	0.020" (0.50mm)	0.026" (0.65mm)
Dimensions (L x W)	0.079" x 0.049" (2.00 x 1.25mm)	0.079" x 0.049" (2.00 x 1.25mm)	0.079" x 0.049" (2.00 x 1.25mm)	0.079" x 0.049" (2.00 x 1.25mm)	0.079" x 0.049" (2.00 x 1.25mm)	0.079" x 0.049" (2.00 x 1.25mm)	0.079" x 0.049" (2.00 x 1.25mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Type	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®
Product Status	Active	Active	Active	Active	Active	Active	Discontinued at DiGi Electronics
Features	Moisture Resistant	Automotive AEC-Q200	Automotive AEC-Q200, High Voltage	Moisture Resistant	Automotive AEC-Q200	Automotive AEC-Q200	-

Engineering Selection Recommendations

Direct Substitutes (Preferred for Drop-In Replacement):

ERJ-6ENF8660V (Panasonic), KTR10EZPF8660 (Rohm), RC0805FR-07866RL (YAGEO), and RMCF0805FT866R (Stackpole) are direct electrical and mechanical equivalents to the RC2012F8660CS. All maintain identical resistance, tolerance, power rating, temperature coefficient, and operating temperature specifications. These parts are suitable for direct substitution in applications where the RC2012F8660CS is specified.

Enhanced Alternatives (Automotive Applications):

ERJ-6ENF8660V, KTR10EZPF8660, RMCF0805FT866R, and CRCW0805866RFKEA include AEC-Q200 automotive qualification. These parts are appropriate for automotive or high-reliability applications requiring enhanced qualification standards while maintaining full electrical compatibility with the base RC2012F8660CS specification.

Similar Substitute (Dimensional Variation):

CRCW0805866RFKEA (Vishay Dale) exhibits a reduced seated height of 0.020" (0.50mm) compared to the RC2012F8660CS at 0.026" (0.65mm). This dimensional difference remains within 0805 package tolerance and does not affect electrical performance. This part is suitable for applications with height-constrained PCB layouts.

Discontinued Part (Limited Availability):

MCR10ERTF8660 (Rohm) is discontinued at DiGi Electronics and available only in limited inventory (2,643 pieces). This part is electrically and mechanically equivalent but should not be selected for new designs due to supply discontinuation status.

Inventory Availability:

CRCW0805866RFKEA maintains the highest inventory level at 27,140 pieces, followed by ERJ-6ENF8660V at 52,527 pieces. These options provide superior supply chain security for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-6ENF8660V replace RC2012F8660CS in a non-automotive application?

A: Yes. ERJ-6ENF8660V is electrically and mechanically equivalent to RC2012F8660CS. The AEC-Q200 automotive qualification present in ERJ-6ENF8660V does not restrict its use in non-automotive applications. All electrical parameters, tolerance, power rating, and temperature specifications are identical.

Q: What is the significance of the height difference between CRCW0805866RFKEA (0.020") and RC2012F8660CS (0.026")?

A: Both parts conform to the 0805 (2012 Metric) package specification. The height variation of 0.006" (0.15mm) falls within standard 0805 package tolerance and does not affect PCB assembly compatibility or electrical performance. CRCW0805866RFKEA is suitable for applications with reduced vertical clearance requirements.

Q: Is the moisture-resistant feature of RC2012F8660CS critical for substitution?

A: Moisture resistance is a feature of the RC2012F8660CS but is not a mandatory requirement for electrical equivalence. Substitute parts without explicit moisture-resistant designation (such as KTR10EZPF8660 or RMCF0805FT866R) maintain full electrical compatibility. Selection should be based on application environmental requirements.

Q: Can MCR10ERTF8660 be used in new designs?

A: MCR10ERTF8660 is electrically and mechanically equivalent but is discontinued at DiGi Electronics. This part should not be selected for new designs due to supply discontinuation and limited remaining inventory. Active alternatives such as ERJ-6ENF8660V, KTR10EZPF8660, or RMCF0805FT866R are recommended.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and REACH Unaffected status, ensuring regulatory equivalence with the RC2012F8660CS across all markets.

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

A: Tape & Reel (TR) packaging is supplied on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape (CT) is supplied in shorter tape segments for manual or lower-volume assembly. MCR10ERTF8660 is supplied in Cut Tape (CT) & Digi-Reel® format, which may require different handling procedures compared to standard Tape & Reel packaging.

Q: Do all substitute parts operate across the same temperature range as RC2012F8660CS?

A: Yes. All substitute parts operate across the identical temperature range of -55°C to 155°C with ±100ppm/°C temperature coefficient, ensuring thermal performance equivalence.

Q: Which substitute part offers the best supply chain security?

A: ERJ-6ENF8660V (Panasonic) with 52,527 pieces in stock and CRCW0805866RFKEA (Vishay Dale) with 27,140 pieces in stock provide the highest inventory levels and superior supply chain security for high-volume production requirements.

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