Equivalent & Substitute Parts for RCS2012F1021CS

Part Overview

The RCS2012F1021CS is a 1.02 kOhms ±1% 0.125W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component features anti-sulfur and moisture-resistant construction, operating across -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is Active status and ROHS3 compliant with MSL 1 rating. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental performance characteristics to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Specification
Resistance Value	1.02 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
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Packaging	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for RCS2012F1021CS are qualified based on the following criteria:

Electrical Parameters (Critical):

Resistance value: 1.02 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Critical):

Package type: 0805 (2012 Metric)
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of terminations: 2

Compliance & Environmental (Required):

RoHS3 compliance
MSL 1 rating
Thick film composition

All four substitute parts meet these criteria and are functionally equivalent for direct replacement applications.

Parameter Comparison

Parameter	RCS2012F1021CS (Samsung)	AC0805FR-071K02L (YAGEO)	CRCW08051K02FKEA (Vishay Dale)	ERJ-6ENF1021V (Panasonic)	RC0805FR-071K02L (YAGEO)
Resistance	1.02 kOhms	1.02 kOhms	1.02 kOhms	1.02 kOhms	1.02 kOhms
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)	0.024" (0.60mm)
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q200 Rating	Not specified	Yes	Yes	Yes	Not specified

Engineering Selection Recommendations

All four substitute parts are Active status components with ROHS3 compliance and MSL 1 ratings, confirming functional equivalence to RCS2012F1021CS for standard applications.

AC0805FR-071K02L (YAGEO): Automotive AEC-Q200 qualified with 10,930 units in stock. Height-seated maximum of 0.024" (0.60mm) provides compact profile suitable for space-constrained layouts.

CRCW08051K02FKEA (Vishay Dale): Automotive AEC-Q200 qualified with highest inventory availability at 36,936 units. Lowest height-seated maximum of 0.020" (0.50mm) for applications requiring minimal vertical clearance.

ERJ-6ENF1021V (Panasonic): Automotive AEC-Q200 qualified with 37,000 units in stock. Height-seated maximum of 0.028" (0.70mm) represents the tallest profile among substitutes.

RC0805FR-071K02L (YAGEO): Non-automotive rated with highest inventory at 177,760 units. Height-seated maximum of 0.024" (0.60mm). Suitable for non-automotive applications requiring high volume availability.

Selection between substitutes depends on application requirements: automotive qualification necessity, available board clearance, and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can RCS2012F1021CS be directly replaced with any of these substitute parts?

A: Yes. All four substitute parts match the critical electrical parameters (1.02 kOhms ±1%, 0.125W, ±100ppm/°C), mechanical specifications (0805 package, 2.00mm x 1.25mm), and compliance requirements (ROHS3, MSL 1). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between automotive-rated and non-automotive-rated substitutes?

A: AC0805FR-071K02L, CRCW08051K02FKEA, and ERJ-6ENF1021V carry AEC-Q200 automotive qualification. RC0805FR-071K02L does not specify automotive rating. AEC-Q200 qualification indicates compliance with automotive reliability and quality standards. Selection depends on application requirements.

Q: Are there height differences between substitute parts?

A: Yes. Height-seated maximum values range from 0.020" (0.50mm) for CRCW08051K02FKEA to 0.028" (0.70mm) for ERJ-6ENF1021V. RCS2012F1021CS measures 0.026" (0.66mm). Verify available board clearance before selection if height is a constraint.

Q: Do all substitutes have the same moisture sensitivity level?

A: Yes. All parts including RCS2012F1021CS carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.

Q: Which substitute has the best inventory availability?

A: RC0805FR-071K02L (YAGEO) offers the highest inventory at 177,760 units. CRCW08051K02FKEA (Vishay Dale) and ERJ-6ENF1021V (Panasonic) provide 36,936 and 37,000 units respectively. AC0805FR-071K02L (YAGEO) has 10,930 units available.

Q: Are all substitutes REACH compliant?

A: Yes. All parts including RCS2012F1021CS are REACH Unaffected, confirming compliance with chemical substance regulations.

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