RCS2012F4020CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F4020CS is a 402 Ohm ±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 construction. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and package compatibility are maintained across different manufacturers. This reference provides direct substitution options for procurement flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value
Resistance	402 Ohms
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 Type	Tape & Reel (TR)

Substitute Part Grouping Explanation

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

Primary Substitution Criteria:

Resistance value: 402 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.125W / 1/8W (exact match required)
Package: 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)

Secondary Compatibility Factors:

Moisture Sensitivity Level: 1 (Unlimited) across all qualified substitutes
Termination count: 2 (standard for chip resistors)
REACH and ECCN classifications: Consistent across all parts

Parts meeting all primary criteria are classified as direct electrical and mechanical equivalents. Dimensional variations (height-seated maximum) do not affect substitution eligibility when package footprint remains 0805 (2012 Metric).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max (mm)	RoHS Status	AEC-Q200
RCS2012F4020CS	Samsung Electro-Mechanics	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.66	ROHS3	No
AC0805FR-07402RL	YAGEO	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.60	ROHS3	Yes
CRCW0805402RFKEA	Vishay Dale	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.50	ROHS3	Yes
CRCW0805402RFKTA	Vishay Dale	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.50	RoHS Non-compliant	Yes
ERJ-6ENF4020V	Panasonic Electronic Components	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.70	ROHS3	Yes
RC0805FR-07402RL	YAGEO	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.60	ROHS3	No
RMCF0805FT402R	Stackpole Electronics Inc	402 Ω	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.65	ROHS3	Yes

Engineering Selection Recommendations

ROHS3 Compliant Direct Substitutes (Preferred for New Designs):

The following parts maintain full ROHS3 compliance and are suitable for direct substitution in applications where regulatory compliance is required:

AC0805FR-07402RL (YAGEO): ROHS3 compliant with AEC-Q200 automotive qualification. Inventory: 10,877 pcs.
CRCW0805402RFKEA (Vishay Dale): ROHS3 compliant with AEC-Q200 automotive qualification. Inventory: 37,920 pcs.
ERJ-6ENF4020V (Panasonic Electronic Components): ROHS3 compliant with AEC-Q200 automotive qualification. Inventory: 85,526 pcs.
RMCF0805FT402R (Stackpole Electronics Inc): ROHS3 compliant with AEC-Q200 automotive qualification. Inventory: 431,897 pcs.

Non-Automotive Substitute (ROHS3 Compliant):

RC0805FR-07402RL (YAGEO): ROHS3 compliant without AEC-Q200 rating. Inventory: 385,819 pcs. Suitable for non-automotive applications.

Legacy Compatibility (RoHS Non-Compliant):

CRCW0805402RFKTA (Vishay Dale): RoHS non-compliant, REACH affected. Inventory: 5,139 pcs. Use only in applications where legacy component specifications are required.

Higher Power Rating Alternatives (0.5W / 1/2W):

Parts with increased power dissipation capability while maintaining 402 Ohm resistance and 0805 package:

CRCW0805402RFKEAHP (Vishay Dale): 0.5W rating, ROHS3 compliant, AEC-Q200. Inventory: 19,628 pcs.
RCS0805402RFKEA (Vishay Dale): 0.5W rating, ROHS3 compliant, AEC-Q200. Inventory: 6,140 pcs.

Frequently Asked Questions (FAQ)

Q: Can AC0805FR-07402RL replace RCS2012F4020CS in existing designs?

A: Yes. Both parts share identical electrical specifications (402 Ω ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C operating range) and 0805 package footprint. AC0805FR-07402RL adds AEC-Q200 automotive qualification and maintains ROHS3 compliance. Physical height difference (0.60mm vs 0.66mm) does not affect PCB assembly compatibility.

Q: What is the difference between CRCW0805402RFKEA and CRCW0805402RFKTA?

A: Both parts are electrically and mechanically identical (402 Ω ±1%, 0.125W, 0805 package). The primary difference is regulatory compliance: CRCW0805402RFKEA is ROHS3 compliant and REACH unaffected, while CRCW0805402RFKTA is RoHS non-compliant and REACH affected. CRCW0805402RFKEA is recommended for new designs and applications subject to environmental regulations.

Q: When should I use the 0.5W (1/2W) rated alternatives?

A: Use CRCW0805402RFKEAHP or RCS0805402RFKEA only when circuit design requires higher power dissipation capability than 0.125W. These parts maintain the same 402 Ohm resistance, ±1% tolerance, and 0805 package but provide 4x power rating. Verify PCB thermal design supports increased power dissipation before substitution.

Q: Are all substitute parts AEC-Q200 qualified?

A: No. RC0805FR-07402RL (YAGEO) and RCS2012F4020CS (Samsung Electro-Mechanics) do not carry AEC-Q200 automotive qualification. All other listed substitutes (AC0805FR-07402RL, CRCW0805402RFKEA, CRCW0805402RFKTA, ERJ-6ENF4020V, RMCF0805FT402R, CRCW0805402RFKEAHP, RCS0805402RFKEA) are AEC-Q200 qualified.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity limitations. All listed parts carry this rating, meaning they can be stored indefinitely without desiccant packaging and do not require special handling or baking procedures prior to soldering.

Q: Can I substitute based on physical dimensions alone?

A: No. Physical dimensions (height-seated maximum) vary across manufacturers (0.50mm to 0.70mm range) but do not determine substitution eligibility. Substitution is determined by electrical specifications (resistance, tolerance, power rating, temperature coefficient), package type (0805), and operating temperature range. All listed parts meet these criteria despite dimensional variations.

Q: Which substitute has the highest inventory availability?

A: RMCF0805FT402R (Stackpole Electronics Inc) has the highest inventory with 431,897 pcs in stock. RC0805FR-07402RL (YAGEO) is second with 385,819 pcs. Both are ROHS3 compliant and suitable for high-volume procurement.

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