RCS2012F1584CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F1584CS is a 1.58 MOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) in 0805 (2012 Metric) surface mount package. This component is classified as Active product status with anti-sulfur and moisture resistant construction. Equivalent and substitute parts are identified when applications require alternative sourcing due to inventory constraints, supply chain considerations, or specific certification requirements while maintaining identical electrical and mechanical performance.

Key Parameters

Parameter	Specification
Resistance Value	1.58 MOhms
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 (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F1584CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

Resistance value: 1.58 MOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

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

Compliance Parameters (Must Match or Exceed):

RoHS3 Compliant
MSL 1 (Unlimited)
REACH Unaffected status

All identified substitute parts meet these criteria. Variations in height-seated maximum and specific feature sets (anti-sulfur vs. automotive AEC-Q200 certification) do not affect functional substitutability within the specified electrical and mechanical constraints.

Parameter Comparison

Parameter	RCS2012F1584CS (Samsung)	CRCW08051M58FKEA (Vishay Dale)	ERJ-6ENF1584V (Panasonic)	RC0805FR-071M58L (YAGEO)
Resistance	1.58 MOhms	1.58 MOhms	1.58 MOhms	1.58 MOhms
Tolerance	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W
Package	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±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
Height - Seated (Max)	0.026" (0.66mm)	0.020" (0.50mm)	0.028" (0.70mm)	0.024" (0.60mm)
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All four parts listed are functionally equivalent for direct substitution in applications requiring a 1.58 MOhms ±1% 0.125W 0805 thick film chip resistor. Selection among these alternatives is based on availability, supply chain logistics, and specific application certifications:

RCS2012F1584CS (Samsung Electro-Mechanics): Primary specification. Anti-sulfur and moisture resistant construction. 826 units in stock.

CRCW08051M58FKEA (Vishay Dale): Automotive AEC-Q200 rated. Lowest seated height (0.020"). Highest inventory availability (30,684 units). Suitable for automotive and industrial applications requiring AEC-Q200 compliance.

ERJ-6ENF1584V (Panasonic Electronic Components): Automotive AEC-Q200 rated. Highest seated height (0.028"). 26,183 units in stock. Suitable for automotive and industrial applications requiring AEC-Q200 compliance.

RC0805FR-071M58L (YAGEO): Moisture resistant construction. Mid-range seated height (0.024"). 6,156 units in stock. Suitable for general industrial applications.

All parts maintain identical electrical performance across the specified operating temperature range and meet ROHS3 compliance and REACH unaffected status requirements.

Frequently Asked Questions (FAQ)

Q: Can CRCW08051M58FKEA replace RCS2012F1584CS in any application?

A: Yes. Both parts share identical electrical specifications (1.58 MOhms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C operating range) and mechanical package (0805). The CRCW08051M58FKEA includes automotive AEC-Q200 certification, which does not restrict its use in non-automotive applications. The 0.006" (0.16mm) difference in seated height is within typical PCB assembly tolerances.

Q: What is the difference between anti-sulfur and automotive AEC-Q200 features?

A: Anti-sulfur construction (RCS2012F1584CS, RC0805FR-071M58L) provides protection against sulfur-containing environmental contaminants. Automotive AEC-Q200 certification (CRCW08051M58FKEA, ERJ-6ENF1584V) indicates qualification for automotive temperature cycling and reliability testing. These are distinct feature sets; neither restricts substitution based on electrical or mechanical parameters.

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

A: Yes. All four parts are supplied in Tape & Reel packaging suitable for automated assembly processes.

Q: Does seated height variation affect PCB assembly compatibility?

A: Seated height variations (0.020" to 0.028") are within standard PCB assembly specifications for 0805 components. All parts are mechanically compatible with standard 0805 footprints. Height differences do not affect electrical performance or signal integrity.

Q: Which substitute part has the highest inventory availability?

A: CRCW08051M58FKEA (Vishay Dale) with 30,684 units in stock, followed by ERJ-6ENF1584V (Panasonic) with 26,183 units.

Q: Are all parts RoHS3 compliant and REACH unaffected?

A: Yes. All four parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

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