RCS2012J182CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012J182CS is a 1.8 kOhms ±5% 0.125W (1/8W) chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This thick film resistor features anti-sulfur and moisture-resistant properties, with operating temperature range of -55°C to 155°C. The part is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating. With 894 units in current stock and Active product status, equivalent and substitute parts are identified to support design flexibility, procurement alternatives, and supply chain continuity.

Key Parameters

Parameter	Value
Resistance	1.8 kOhms
Tolerance	±5%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012J182CS is determined by the following critical parameters:

Primary Substitution Criteria:

Resistance value: 1.8 kOhms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Power rating: 0.125W minimum (equal or higher acceptable)
Tolerance: ±5% or tighter (±1% acceptable as superior specification)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C minimum
RoHS compliance: ROHS3 Compliant

Substitution Logic: Parts meeting all primary criteria are classified as direct substitutes. Tolerance tighter than ±5% (such as ±1%) represents an improved specification and does not restrict substitution. Power ratings equal to or exceeding 0.125W are acceptable. Packaging format (Tape & Reel or Cut Tape) does not affect electrical substitution but may impact procurement and assembly processes. Additional features such as automotive AEC-Q200 certification, anti-sulfur properties, or pulse withstanding capability represent enhanced specifications that do not restrict substitution for standard applications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max	RoHS	MSL
RCS2012J182CS	Samsung Electro-Mechanics	1.8 kΩ	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.66mm	ROHS3	1
AC0805FR-071K8L	YAGEO	1.8 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	ROHS3	1
AC0805JR-071K8L	YAGEO	1.8 kΩ	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	ROHS3	1
CRCW08051K80FKEA	Vishay Dale	1.8 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.50mm	ROHS3	1
CRCW08051K80FKEAHP	Vishay Dale	1.8 kΩ	±1%	0.5	0805	±100ppm/°C	-55 to 155°C	0.50mm	ROHS3	1
ERJ-6ENF1801V	Panasonic Electronic Components	1.8 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.70mm	ROHS3	1
ERJ-UP6F1801V	Panasonic Electronic Components	1.8 kΩ	±1%	0.5	0805	±100ppm/°C	-55 to 155°C	0.70mm	ROHS3	1
RC0805FR-071K8L	YAGEO	1.8 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	ROHS3	1
RC0805JR-071K8L	YAGEO	1.8 kΩ	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60mm	ROHS3	1
RCS08051K80FKEA	Vishay Dale	1.8 kΩ	±1%	0.5	0805	±100ppm/°C	-55 to 155°C	0.50mm	ROHS3	1
RMCF0805FT1K80	Stackpole Electronics Inc	1.8 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65mm	ROHS3	1

Engineering Selection Recommendations

All listed substitute parts meet the electrical and mechanical requirements for direct substitution with RCS2012J182CS. Selection among equivalent parts should be based on the following factors:

Tolerance Specification: Parts with ±1% tolerance (AC0805FR-071K8L, CRCW08051K80FKEA, ERJ-6ENF1801V, RC0805FR-071K8L, RCS08051K80FKEA, RMCF0805FT1K80) provide tighter tolerance than the original ±5% specification. These are suitable for applications requiring improved accuracy. Parts with ±5% tolerance (AC0805JR-071K8L, RC0805JR-071K8L) match the original specification exactly.

Power Rating: Standard 0.125W (1/8W) rated parts (AC0805FR-071K8L, AC0805JR-071K8L, CRCW08051K80FKEA, ERJ-6ENF1801V, RC0805FR-071K8L, RC0805JR-071K8L, RMCF0805FT1K80) are electrically equivalent to RCS2012J182CS. Higher power-rated parts (CRCW08051K80FKEAHP, ERJ-UP6F1801V, RCS08051K80FKEA) rated at 0.5W (1/2W) are acceptable substitutes for applications where additional thermal margin is beneficial.

Automotive Certification: Parts carrying AEC-Q200 certification (AC0805FR-071K8L, AC0805JR-071K8L, CRCW08051K80FKEA, CRCW08051K80FKEAHP, ERJ-6ENF1801V, ERJ-UP6F1801V, RCS08051K80FKEA, RMCF0805FT1K80) are qualified for automotive applications. The original RCS2012J182CS does not carry this certification.

Physical Dimensions: All parts conform to 0805 (2012 Metric) package with identical length and width (2.00mm x 1.25mm). Height variations range from 0.50mm to 0.70mm maximum seated height. These minor height differences do not affect PCB layout compatibility.

Compliance Status: All substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Inventory Availability: RMCF0805FT1K80 (138,633 units), RC0805JR-071K8L (122,411 units), and AC0805JR-071K8L (10,974 units) offer highest stock levels for immediate procurement.

Frequently Asked Questions (FAQ)

Q: Can I substitute a ±1% tolerance part for the original ±5% RCS2012J182CS?

A: Yes. Tighter tolerance specifications represent improved performance and do not restrict substitution. A ±1% part will function correctly in any application designed for ±5% tolerance.

Q: Are higher power-rated parts (0.5W) compatible with designs specified for 0.125W?

A: Yes. Higher power ratings provide additional thermal capability and are electrically compatible. The 0.5W rated parts (CRCW08051K80FKEAHP, ERJ-UP6F1801V, RCS08051K80FKEA) will operate correctly in circuits designed for 0.125W resistors.

Q: Does the packaging format (Tape & Reel vs. Cut Tape) affect electrical substitution?

A: No. Packaging format affects procurement and assembly logistics but does not impact electrical performance or PCB compatibility. Both Tape & Reel and Cut Tape formats are electrically equivalent.

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

A: AEC-Q200 certification indicates automotive-grade qualification. Parts carrying this certification (AC0805FR-071K8L, CRCW08051K80FKEA, ERJ-6ENF1801V, RMCF0805FT1K80, and others) meet additional reliability and performance standards required for automotive applications. The original RCS2012J182CS does not carry this certification.

Q: Are there any height restrictions I should consider when substituting?

A: All substitute parts conform to 0805 (2012 Metric) package dimensions. Maximum seated heights range from 0.50mm to 0.70mm. These variations are within standard PCB assembly tolerances and do not restrict substitution for standard applications. Verify height clearance only if your design has specific spatial constraints.

Q: Which substitute part offers the best combination of availability and specification match?

A: RC0805JR-071K8L (YAGEO) provides exact tolerance match (±5%) with 122,411 units in stock. RMCF0805FT1K80 (Stackpole Electronics Inc) offers ±1% tolerance with highest availability (138,633 units) and AEC-Q200 certification.

Q: Can I use parts with anti-sulfur or pulse-withstanding features as direct substitutes?

A: Yes. Anti-sulfur and pulse-withstanding features represent enhanced capabilities that do not restrict substitution. These features provide additional performance margin and are fully compatible with standard applications.

Q: What is MSL Level 1 and why does it matter?

A: MSL (Moisture Sensitivity Level) 1 indicates Unlimited shelf life with no moisture bake requirement before soldering. All listed parts carry MSL Level 1 rating, matching the original RCS2012J182CS specification.

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