RCS2012F1821CS Equivalent & Substitute Parts

Part Overview

The RCS2012F1821CS is a 1.82 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 unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct circuit board replacement capability.

Key Parameters

Parameter	Specification
Resistance Value	1.82 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
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RCS2012F1821CS are grouped based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Parameters for Substitution:

Resistance value: 1.82 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Package: 0805 (2012 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

All identified substitute parts match these core electrical specifications and physical dimensions. Substitute parts are further categorized by additional features such as automotive AEC-Q200 certification and RoHS compliance status. One substitute part (CRCW08051K82FKEAHP) differs in power rating (0.5W instead of 0.125W) and is listed as a higher-capacity alternative for applications requiring increased power dissipation capability within the same package footprint.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp (°C)	Height Max (mm)	AEC-Q200	RoHS3
RCS2012F1821CS	Samsung Electro-Mechanics	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.66	No	Yes
AC0805FR-071K82L	YAGEO	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.60	Yes	Yes
CRCW08051K82FKEA	Vishay Dale	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.50	Yes	Yes
CRCW08051K82FKEAHP	Vishay Dale	1.82k	±1%	0.5	0805	±100ppm/°C	-55 ~ 155	0.50	Yes	Yes
CRCW08051K82FKTA	Vishay Dale	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.50	Yes	No
ERJ-6ENF1821V	Panasonic Electronic Components	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.70	Yes	Yes
RC0805FR-071K82L	YAGEO	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.60	No	Yes
RMCF0805FT1K82	Stackpole Electronics Inc	1.82k	±1%	0.125	0805	±100ppm/°C	-55 ~ 155	0.65	Yes	Yes

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications): AC0805FR-071K82L, CRCW08051K82FKEA, ERJ-6ENF1821V, RC0805FR-071K82L, and RMCF0805FT1K82 are direct functional equivalents to the RCS2012F1821CS. All maintain identical electrical parameters (1.82 kOhms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C operating range) and 0805 package dimensions. These parts are suitable for one-to-one replacement in standard applications.

Compliance Considerations: The RCS2012F1821CS is ROHS3 compliant. For applications requiring maintained RoHS3 compliance, substitute parts AC0805FR-071K82L, CRCW08051K82FKEA, ERJ-6ENF1821V, RC0805FR-071K82L, and RMCF0805FT1K82 are compliant alternatives. CRCW08051K82FKTA is RoHS non-compliant and REACH affected; this part is not recommended for new designs requiring regulatory compliance.

Automotive Applications: For automotive applications requiring AEC-Q200 certification, substitute parts AC0805FR-071K82L, CRCW08051K82FKEA, CRCW08051K82FKTA, ERJ-6ENF1821V, and RMCF0805FT1K82 carry AEC-Q200 ratings. The original RCS2012F1821CS does not carry this certification.

Higher Power Requirement Alternative: CRCW08051K82FKEAHP provides 0.5W (1/2W) power rating in the same 0805 package with pulse withstanding capability. This part is suitable only for applications requiring increased power dissipation beyond the 0.125W specification of the original part.

Height-Constrained Applications: For PCB assemblies with strict height limitations, CRCW08051K82FKEA and CRCW08051K82FKEAHP offer the lowest seated height at 0.50mm maximum, compared to the original part's 0.66mm maximum height.

Frequently Asked Questions (FAQ)

Q: Can CRCW08051K82FKEAHP be used as a direct replacement for RCS2012F1821CS?

A: CRCW08051K82FKEAHP is not a direct replacement. While it maintains the same resistance value (1.82 kOhms), tolerance (±1%), package (0805), and operating temperature range (-55°C ~ 155°C), it has a different power rating of 0.5W compared to the original 0.125W specification. This part is suitable only for applications where higher power dissipation is required or acceptable.

Q: What is the difference between AC0805FR-071K82L and RC0805FR-071K82L?

A: Both are YAGEO manufactured 1.82 kOhms ±1% 0.125W 0805 resistors with identical electrical specifications. AC0805FR-071K82L carries automotive AEC-Q200 certification and is rated for automotive applications. RC0805FR-071K82L does not carry AEC-Q200 certification. Both are ROHS3 compliant. Selection depends on application requirements for automotive qualification.

Q: Is CRCW08051K82FKTA suitable for new product designs?

A: CRCW08051K82FKTA is not recommended for new product designs. Although it matches the electrical specifications of the RCS2012F1821CS, it is RoHS non-compliant and REACH affected. Current regulatory requirements and industry standards favor ROHS3 compliant alternatives such as CRCW08051K82FKEA or ERJ-6ENF1821V.

Q: Do all substitute parts fit within the same PCB footprint as RCS2012F1821CS?

A: Yes. All substitute parts use the 0805 (2012 Metric) package with identical length (0.079" / 2.00mm) and width (0.049" / 1.25mm) dimensions. Height variations exist (ranging from 0.50mm to 0.70mm maximum seated height), but these do not affect PCB footprint compatibility. Height differences may be relevant only for applications with strict vertical clearance constraints.

Q: Which substitute part offers the best inventory availability?

A: ERJ-6ENF1821V from Panasonic Electronic Components has the highest inventory level at 134,907 pieces in stock, followed by CRCW08051K82FKEA from Vishay Dale at 41,852 pieces. Both are ROHS3 compliant and AEC-Q200 certified alternatives suitable for direct replacement.

Q: Are all substitute parts suitable for the full operating temperature range of -55°C to 155°C?

A: Yes. All identified substitute parts maintain the same operating temperature range of -55°C ~ 155°C and temperature coefficient of ±100ppm/°C as the original RCS2012F1821CS. No thermal performance degradation occurs with any of these alternatives.

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