RCS2012F182CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F182CS is a 1.8 kOhms ±1% 0.125W (1/8W) thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is classified as Active product status with anti-sulfur and moisture-resistant characteristics. The part is ROHS3 compliant with MSL 1 (Unlimited) rating, suitable for general industrial and commercial applications requiring stable resistive elements across the -55°C to 155°C operating temperature range.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative feature sets such as automotive qualification or enhanced pulse withstanding capabilities.

Key Parameters

Parameter	Value
Resistance	1.8 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
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F182CS is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Resistance value: 1.8 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C (exact match required)
Number of Terminations: 2 (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Secondary Consideration:

Power Rating: Substitutes with equal or higher power rating (0.125W or greater) are acceptable

Substitute parts are grouped into two categories based on power rating:

Category A - Direct Equivalents (0.125W / 1/8W): Parts with identical power rating to the main part. These include RMCF0805FT1K80, AC0805FR-071K8L, CRCW08051K80FKEA, ERJ-6ENF1801V, and RC0805FR-071K8L.

Category B - Enhanced Rating (0.5W / 1/2W): Parts with higher power dissipation capability while maintaining all other electrical and mechanical parameters. These include CRCW08051K80FKEAHP, ERJ-UP6F1801V, and RCS08051K80FKEA.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Op. Temp Range	Height Max	AEC-Q200	RoHS3	MSL
RCS2012F182CS	Samsung Electro-Mechanics	1.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.66mm	No	Yes	1
RMCF0805FT1K80	Stackpole Electronics Inc	1.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.65mm	Yes	Yes	1
AC0805FR-071K8L	YAGEO	1.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.60mm	Yes	Yes	1
CRCW08051K80FKEA	Vishay Dale	1.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	Yes	Yes	1
CRCW08051K80FKEAHP	Vishay Dale	1.8 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	Yes	Yes	1
ERJ-6ENF1801V	Panasonic Electronic Components	1.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.70mm	Yes	Yes	1
ERJ-UP6F1801V	Panasonic Electronic Components	1.8 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	0.70mm	Yes	Yes	1
RC0805FR-071K8L	YAGEO	1.8 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	0.60mm	No	Yes	1
RCS08051K80FKEA	Vishay Dale	1.8 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	0.50mm	Yes	Yes	1

Engineering Selection Recommendations

For Direct Replacement (0.125W / 1/8W Rating):

RMCF0805FT1K80 (Stackpole Electronics Inc) is the primary recommended substitute. This part maintains identical electrical specifications and power rating while offering AEC-Q200 automotive qualification. High inventory availability (138,633 pcs) ensures supply continuity.

AC0805FR-071K8L (YAGEO) and CRCW08051K80FKEA (Vishay Dale) are secondary alternatives with AEC-Q200 qualification. Both maintain full parameter equivalence with the main part. CRCW08051K80FKEA offers the lowest maximum seated height (0.50mm), beneficial for space-constrained PCB layouts.

RC0805FR-071K8L (YAGEO) is functionally equivalent but lacks AEC-Q200 automotive qualification. This part is suitable for non-automotive applications where automotive-grade certification is not required.

For Enhanced Power Dissipation (0.5W / 1/2W Rating):

CRCW08051K80FKEAHP (Vishay Dale), ERJ-UP6F1801V (Panasonic Electronic Components), and RCS08051K80FKEA (Vishay Dale) provide doubled power rating capability while maintaining all other electrical and mechanical parameters. These parts are suitable for applications requiring higher pulse withstanding or thermal margin. All three carry AEC-Q200 qualification.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can CRCW08051K80FKEAHP (0.5W) be used as a direct replacement for RCS2012F182CS (0.125W)?

A: Yes. The CRCW08051K80FKEAHP maintains identical resistance (1.8 kOhms), tolerance (±1%), package (0805), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The higher power rating (0.5W vs 0.125W) does not create incompatibility; it provides additional thermal margin. Physical dimensions remain within specification for PCB layout compatibility.

Q: What is the difference between AC0805FR-071K8L and RC0805FR-071K8L?

A: Both parts are manufactured by YAGEO with identical electrical specifications (1.8 kOhms ±1%, 0.125W, 0805 package). The primary difference is AEC-Q200 automotive qualification: AC0805FR-071K8L carries this certification while RC0805FR-071K8L does not. For automotive applications, AC0805FR-071K8L is the appropriate selection.

Q: Are all substitute parts suitable for the same PCB assembly process?

A: All substitute parts use identical 0805 (2012 Metric) package format with 2 terminations, compatible with standard SMD reflow soldering processes. Maximum seated heights vary between 0.50mm and 0.70mm; verify PCB clearance specifications for space-constrained designs. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats are both suitable for automated pick-and-place assembly.

Q: Which substitute offers the best supply availability?

A: RMCF0805FT1K80 (Stackpole Electronics Inc) provides the highest inventory level at 138,633 pcs, followed by ERJ-6ENF1801V (Panasonic Electronic Components) at 97,019 pcs. Both parts maintain identical 0.125W power rating and full electrical equivalence to the main part.

Q: Can I use ERJ-UP6F1801V in place of RCS2012F182CS?

A: Yes. ERJ-UP6F1801V is electrically and mechanically equivalent with the addition of pulse withstanding capability and doubled power rating (0.5W). The part carries AEC-Q200 automotive qualification and anti-sulfur features matching the original part's environmental protection characteristics.

Q: What is the significance of the ±100ppm/°C temperature coefficient?

A: The temperature coefficient indicates resistance value change per degree Celsius across the operating temperature range. All listed parts maintain ±100ppm/°C, ensuring consistent performance across the -55°C to 155°C operating window. This parameter is identical across all substitutes and the main part.

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