RC2012F66R5CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F66R5CS is a 66.5 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) in 0805 (2012 Metric) package format. This component is classified as Active product status with moisture-resistant construction and ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings are maintained across alternative manufacturers while preserving functional performance in target applications.

Key Parameters

Parameter	Value
Resistance	66.5 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 ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC2012F66R5CS are classified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

Resistance value: 66.5 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.125W / 1/8W (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)
Terminations: 2 (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All identified substitute parts maintain these parameters across different manufacturers. Physical height variations (0.020" to 0.028" seated height) remain within acceptable PCB assembly tolerances for 0805 package specifications.

Parameter Comparison

Parameter	RC2012F66R5CS (Samsung)	RC0805FR-0766R5L (YAGEO)	CRCW080566R5FKEA (Vishay Dale)	ERJ-6ENF66R5V (Panasonic)	RMCF0805FT66R5 (Stackpole)
Resistance	66.5 Ohms	66.5 Ohms	66.5 Ohms	66.5 Ohms	66.5 Ohms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W
Package	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Height - Seated (Max)	0.026" (0.66mm)	0.024" (0.60mm)	0.020" (0.50mm)	0.028" (0.70mm)	0.026" (0.65mm)
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical equivalence to the RC2012F66R5CS. Selection among alternatives is determined by:

Manufacturer Availability: YAGEO RC0805FR-0766R5L offers direct equivalence with 14,068 units in stock. CRCW080566R5FKEA (Vishay Dale) provides the highest inventory level at 31,291 units and includes AEC-Q200 automotive qualification. ERJ-6ENF66R5V (Panasonic) maintains 83,203 units in stock with AEC-Q200 rating. RMCF0805FT66R5 (Stackpole) provides 15,082 units with AEC-Q200 qualification.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification identical to the original part. Three substitute options (CRCW080566R5FKEA, ERJ-6ENF66R5V, RMCF0805FT66R5) include AEC-Q200 automotive qualification, suitable for applications requiring automotive-grade reliability.

Physical Compatibility: Seated height variations range from 0.020" to 0.028", all within standard 0805 package tolerance specifications. PCB assembly processes accommodate this height range without modification.

Frequently Asked Questions (FAQ)

Q: Can RC0805FR-0766R5L (YAGEO) be used as a direct replacement for RC2012F66R5CS (Samsung)?

A: Yes. Both parts share identical electrical specifications (66.5 Ohms ±1%, 0.125W), package format (0805/2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating range (-55°C ~ 155°C), and compliance ratings (ROHS3, MSL 1). Physical height difference (0.024" vs 0.026") is within 0805 package tolerance.

Q: What is the difference between moisture-resistant and AEC-Q200 rated substitutes?

A: The original RC2012F66R5CS specifies moisture-resistant thick film construction. Three substitute options (CRCW080566R5FKEA, ERJ-6ENF66R5V, RMCF0805FT66R5) include AEC-Q200 automotive qualification in addition to moisture resistance. AEC-Q200 certification indicates compliance with automotive reliability and environmental stress testing standards. Selection depends on application requirements.

Q: Are all substitute parts available in Tape & Reel (TR) packaging?

A: Yes. All identified substitute parts are supplied in Tape & Reel packaging format, matching the original part's packaging specification.

Q: Do substitute parts maintain the same temperature coefficient performance?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C ~ 155°C operating temperature range, identical to the RC2012F66R5CS.

Q: Which substitute offers the highest inventory availability?

A: ERJ-6ENF66R5V (Panasonic Electronic Components) maintains the highest inventory level at 83,203 units in stock.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All substitute parts conform to 0805 (2012 Metric) package specifications with compatible termination configurations. Seated height variations (0.020" to 0.028") are within standard PCB assembly process capabilities for this package class.

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