RCS2012F1912CS Equivalent & Substitute Parts

Part Overview

The RCS2012F1912CS is a 19.1 kOhms ±1% 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 characteristics. The part is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and package compatibility are maintained across different manufacturers. The following substitute components meet the core electrical and physical requirements for direct replacement in applications where the RCS2012F1912CS is specified.

Key Parameters

Parameter	Value
Resistance	19.1 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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts are organized into two functional groups based on power rating and automotive qualification:

Group 1: Direct Electrical Equivalents (0.125W, 1/8W Rating)

These parts maintain identical power rating, resistance value, tolerance, and package dimensions as the main part RCS2012F1912CS:

CRCW080519K1FKEA (Vishay Dale)
ERJ-6ENF1912V (Panasonic Electronic Components)
RC0805FR-0719K1L (YAGEO)
RMCF0805FT19K1 (Stackpole Electronics Inc)

All Group 1 substitutes share the following critical parameters: 19.1 kOhms resistance, ±1% tolerance, 0.125W power rating, 0805 package, ±100ppm/°C temperature coefficient, -55°C ~ 155°C operating range, ROHS3 compliance, and MSL Level 1 rating.

Group 2: Higher Power Rating Variants (0.5W, 1/2W Rating)

These parts maintain identical resistance, tolerance, package, and temperature specifications but feature increased power dissipation capability:

CRCW080519K1FKEAHP (Vishay Dale)
RCS080519K1FKEA (Vishay Dale)

Group 2 parts are suitable for applications requiring higher pulse withstanding or thermal margin while maintaining the same 0805 package footprint and electrical characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Height Max	RoHS Status	MSL
RCS2012F1912CS	Samsung Electro-Mechanics	19.1 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.66mm	ROHS3	1
CRCW080519K1FKEA	Vishay Dale	19.1 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	ROHS3	1
CRCW080519K1FKEAHP	Vishay Dale	19.1 kOhms	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	ROHS3	1
ERJ-6ENF1912V	Panasonic Electronic Components	19.1 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.70mm	ROHS3	1
RC0805FR-0719K1L	YAGEO	19.1 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.60mm	ROHS3	1
RCS080519K1FKEA	Vishay Dale	19.1 kOhms	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	ROHS3	1
RMCF0805FT19K1	Stackpole Electronics Inc	19.1 kOhms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.65mm	ROHS3	1

Engineering Selection Recommendations

For Direct Replacement (Identical Power Rating)

CRCW080519K1FKEA, ERJ-6ENF1912V, RC0805FR-0719K1L, and RMCF0805FT19K1 are suitable for direct substitution where the RCS2012F1912CS is specified. All maintain 0.125W power rating, 19.1 kOhms resistance, ±1% tolerance, and 0805 package compatibility. All substitute parts carry ROHS3 compliance and MSL Level 1 rating identical to the main part.

CRCW080519K1FKEA, ERJ-6ENF1912V, and RMCF0805FT19K1 include AEC-Q200 automotive qualification. RC0805FR-0719K1L from YAGEO carries moisture-resistant designation matching the main part's environmental protection features.

For Applications Requiring Higher Power Dissipation

CRCW080519K1FKEAHP and RCS080519K1FKEA provide 0.5W (1/2W) power rating while maintaining identical resistance, tolerance, and package footprint. These variants include AEC-Q200 automotive qualification and pulse withstanding capability. Selection of higher power variants is appropriate when circuit design requires thermal margin or pulse handling beyond the 0.125W specification.

All substitute parts maintain the -55°C ~ 155°C operating temperature range and ±100ppm/°C temperature coefficient of the main part, ensuring thermal performance equivalence in specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can CRCW080519K1FKEAHP (0.5W) be used in place of RCS2012F1912CS (0.125W)?

A: Yes. The higher power rating does not prevent substitution. The 0.5W variant operates within the same electrical and thermal parameters at lower power levels. The 0805 package dimensions remain identical. Selection of the higher power variant provides additional thermal margin and pulse withstanding capability without affecting circuit performance at the original 0.125W operating point.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance status identical to the main part RCS2012F1912CS. All parts also maintain MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of AEC-Q200 qualification on substitute parts?

A: AEC-Q200 is an automotive qualification standard. Substitute parts carrying this designation (CRCW080519K1FKEA, ERJ-6ENF1912V, RMCF0805FT19K1, CRCW080519K1FKEAHP, RCS080519K1FKEA) meet automotive reliability and performance requirements. This qualification does not restrict use in non-automotive applications and indicates additional quality assurance testing.

Q: Do package height variations affect PCB assembly compatibility?

A: All substitute parts use the 0805 (2012 Metric) package with maximum seated heights ranging from 0.50mm to 0.70mm. The RCS2012F1912CS specifies 0.66mm maximum height. Variations within this range do not affect standard PCB assembly processes or reflow soldering profiles. Height differences are within typical component placement tolerances for surface mount assembly.

Q: Can RC0805FR-0719K1L be used in moisture-sensitive applications?

A: Yes. RC0805FR-0719K1L carries moisture-resistant designation and MSL Level 1 rating identical to the main part. Both the main part and this substitute are suitable for applications requiring moisture protection without special handling requirements.

Q: What is the difference between Group 1 and Group 2 substitutes?

A: Group 1 substitutes (CRCW080519K1FKEA, ERJ-6ENF1912V, RC0805FR-0719K1L, RMCF0805FT19K1) maintain the 0.125W power rating of the main part. Group 2 substitutes (CRCW080519K1FKEAHP, RCS080519K1FKEA) provide 0.5W power rating. Both groups share identical resistance, tolerance, package, and temperature specifications. Group 2 selection is appropriate when circuit design requires higher power dissipation capability or pulse withstanding performance.

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

A: All listed substitute parts are supplied in Tape & Reel (TR) packaging, matching the main part RCS2012F1912CS packaging format for automated assembly compatibility.

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