RC2012F4993CS 499kΩ ±1% 1/8W 0805 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC2012F4993CS is a 499 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is supplied in Tape & Reel (TR) packaging with 1098 pieces currently in stock.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination count, operating temperature range). Alternative sources provide equivalent performance for general applications or enhanced capabilities for specialized requirements such as automotive qualification or pulse withstanding characteristics.

Key Parameters

Parameter	Value
Resistance	499 kOhms
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
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following parameters:

Primary Matching Criteria:

Resistance value: 499 kOhms
Tolerance: ±1%
Package / Case: 0805 (2012 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C
Number of Terminations: 2
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Considerations:

Power rating (0.125W standard; 0.5W represents enhanced capability)
Packaging format (Tape & Reel vs. Cut Tape & Digi-Reel)
Compliance certifications (RoHS3, REACH, AEC-Q200)
Manufacturer series designation

Parts are grouped into three categories:

Direct Substitute: Identical electrical and mechanical specifications with equivalent packaging.

Upgrade Substitute: Enhanced automotive qualification (AEC-Q200) with identical base electrical specifications.

Similar Substitute: Matching core parameters with variations in power rating, packaging format, or additional features (pulse withstanding, automotive qualification).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max	RoHS Status	AEC-Q200	Packaging	Inventory
RC2012F4993CS	Samsung Electro-Mechanics	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.66mm	ROHS3	No	TR	1098
RC0805FR-07499KL	YAGEO	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.60mm	ROHS3	No	CT & Digi-Reel	2300
AC0805FR-07499KL	YAGEO	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.60mm	ROHS3	Yes	TR	60904
CRCW0805499KFKEA	Vishay Dale	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.50mm	ROHS3	Yes	CT & Digi-Reel	27229
CRCW0805499KFKEAHP	Vishay Dale	499 kΩ	±1%	0.5	0805	±100ppm/°C	-55~155°C	0.50mm	ROHS3	Yes	TR	5482
CRCW0805499KFKTA	Vishay Dale	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.50mm	RoHS Non-compliant	Yes	TR	29517
ERJ-6ENF4993V	Panasonic Electronic Components	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.70mm	ROHS3	Yes	TR	361149
RCS0805499KFKEA	Vishay Dale	499 kΩ	±1%	0.5	0805	±100ppm/°C	-55~155°C	0.50mm	ROHS3	Yes	TR	6364
RMCF0805FT499K	Stackpole Electronics Inc	499 kΩ	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.65mm	ROHS3	Yes	TR	71193

Engineering Selection Recommendations

For Direct Replacement (Non-Automotive Applications):

RC0805FR-07499KL (YAGEO) provides direct electrical and mechanical equivalence to RC2012F4993CS with identical 0.125W power rating and ±100ppm/°C temperature coefficient. This part maintains RoHS3 compliance and MSL 1 rating. Primary difference is packaging format (Cut Tape & Digi-Reel vs. Tape & Reel) and slightly reduced seated height (0.60mm vs. 0.66mm). Inventory availability is 2300 pieces.

For Automotive-Qualified Applications:

AC0805FR-07499KL (YAGEO) is an upgrade option providing AEC-Q200 automotive qualification while maintaining identical electrical specifications (499 kΩ, ±1%, 0.125W, ±100ppm/°C). This part is supplied in Tape & Reel format with significantly higher inventory (60904 pieces) and RoHS3 compliance. Seated height is 0.60mm.

RMCF0805FT499K (Stackpole Electronics Inc) offers AEC-Q200 qualification with equivalent electrical specifications and Tape & Reel packaging. Inventory is 71193 pieces with RoHS3 compliance and seated height of 0.65mm.

ERJ-6ENF4993V (Panasonic Electronic Components) provides AEC-Q200 qualification with highest inventory availability (361149 pieces), Tape & Reel packaging, and RoHS3 compliance. Seated height is 0.70mm.

For Enhanced Power Dissipation:

CRCW0805499KFKEAHP (Vishay Dale) and RCS0805499KFKEA (Vishay Dale) both provide 0.5W power rating with AEC-Q200 qualification, pulse withstanding capability, and RoHS3 compliance. These parts are suitable for applications requiring higher power dissipation than the standard 0.125W rating. Both are supplied in Tape & Reel format with seated height of 0.50mm.

Compliance Considerations:

CRCW0805499KFKTA (Vishay Dale) is not RoHS3 compliant and is REACH Affected. This part is not recommended for new designs requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can RC0805FR-07499KL replace RC2012F4993CS in all applications?

A: RC0805FR-07499KL is electrically and mechanically equivalent with identical resistance (499 kΩ), tolerance (±1%), power rating (0.125W), and operating temperature range (-55°C to 155°C). The primary difference is packaging format (Cut Tape & Digi-Reel vs. Tape & Reel). Seated height is slightly reduced (0.60mm vs. 0.66mm), which is acceptable for standard PCB assembly. Both parts maintain RoHS3 compliance and MSL 1 rating. Substitution is valid for non-automotive applications.

Q: What is the difference between the standard RC2012F4993CS and automotive-qualified alternatives?

A: The RC2012F4993CS does not carry AEC-Q200 automotive qualification. Alternatives such as AC0805FR-07499KL, RMCF0805FT499K, and ERJ-6ENF4993V include AEC-Q200 certification, which indicates compliance with automotive reliability and quality standards. These parts are suitable for automotive applications where qualification is required. Electrical specifications remain identical across all options.

Q: When should I use the 0.5W power-rated alternatives?

A: CRCW0805499KFKEAHP and RCS0805499KFKEA provide 0.5W power rating compared to the standard 0.125W. These parts are selected when circuit design requires higher power dissipation capability or pulse withstanding performance. The 0805 package size remains unchanged. Selection depends on thermal and power requirements of the specific application, not on general compatibility.

Q: Are there packaging format differences that affect PCB assembly?

A: Yes. RC2012F4993CS is supplied in Tape & Reel (TR) format. RC0805FR-07499KL is available in Cut Tape & Digi-Reel format. All other substitutes are supplied in Tape & Reel format. Packaging format affects handling and automated assembly processes but does not impact electrical or mechanical performance. Verify packaging compatibility with your assembly equipment and procurement requirements.

Q: What is the significance of seated height variations?

A: Seated height ranges from 0.50mm to 0.70mm across the substitute options. RC2012F4993CS has a maximum seated height of 0.66mm. Variations of ±0.10mm are within acceptable tolerances for standard PCB assembly and do not affect electrical performance. Height differences become relevant only in space-constrained designs or when precise component stacking is required.

Q: Why do some parts show RoHS non-compliance?

A: CRCW0805499KFKTA is marked as RoHS non-compliant and REACH Affected. This part does not meet current regulatory requirements for new product designs in most markets. It is not recommended for new applications. All other substitutes maintain full RoHS3 compliance and REACH Unaffected status.

Q: How do I select between multiple automotive-qualified options?

A: All automotive-qualified alternatives (AC0805FR-07499KL, RMCF0805FT499K, ERJ-6ENF4993V, CRCW0805499KFKEA, CRCW0805499KFKEAHP, RCS0805499KFKEA) meet AEC-Q200 requirements with identical electrical specifications. Selection criteria include: packaging format preference (Tape & Reel vs. Cut Tape), inventory availability, seated height constraints, and supplier relationship. All are functionally equivalent for automotive applications.

Q: Is temperature coefficient identical across all substitutes?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient, matching the RC2012F4993CS specification. Operating temperature range is -55°C to 155°C across all options. Temperature performance is not a differentiating factor in substitute selection.

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