RCS2012F6343CS Equivalent & Substitute Parts

Part Overview

The RCS2012F6343CS is a 634 kOhms ±1% 0.125W thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package. This component is classified as Active product status and is designed for general-purpose applications requiring precision resistive elements with anti-sulfur and moisture-resistant properties. Substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental compliance certifications to ensure direct functional equivalence in circuit applications.

Key Parameters

Parameter	Specification
Resistance Value	634 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 (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for the RCS2012F6343CS are qualified based on the following criteria:

Electrical Parameters (Critical for Substitution):

Resistance value: 634 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Critical for Substitution):

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

Environmental & Compliance Parameters:

Composition: Thick Film
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
Packaging: Tape & Reel (TR)

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

Parameter Comparison

Parameter	RCS2012F6343CS (Samsung)	CRCW0805634KFKEA (Vishay Dale)	ERJ-6ENF6343V (Panasonic)	RC0805FR-07634KL (YAGEO)
Resistance	634 kOhms	634 kOhms	634 kOhms	634 kOhms
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
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Height - Seated (Max)	0.026" (0.66mm)	0.020" (0.50mm)	0.028" (0.70mm)	0.024" (0.60mm)
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

All four parts listed—RCS2012F6343CS, CRCW0805634KFKEA, ERJ-6ENF6343V, and RC0805FR-07634KL—are functionally equivalent for applications requiring a 634 kOhms ±1% 0.125W 0805 thick film resistor. Selection among these parts should be based on:

Product Availability: CRCW0805634KFKEA (Vishay Dale) and ERJ-6ENF6343V (Panasonic) demonstrate higher inventory levels (20,570 and 42,751 units respectively) compared to RCS2012F6343CS (1,093 units) and RC0805FR-07634KL (18,390 units).

Compliance Certifications: CRCW0805634KFKEA and ERJ-6ENF6343V carry Automotive AEC-Q200 certification, suitable for automotive-grade applications. RCS2012F6343CS and RC0805FR-07634KL are specified for general industrial use with moisture-resistant properties.

Environmental Features: RCS2012F6343CS includes anti-sulfur protection in addition to moisture resistance. RC0805FR-07634KL specifies moisture resistance. CRCW0805634KFKEA and ERJ-6ENF6343V are qualified to automotive standards.

Physical Dimensions: All parts conform to 0805 (2012 Metric) package specifications. Seated height variations (0.020" to 0.028") are within typical PCB assembly tolerances and do not affect substitution capability.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805634KFKEA replace RCS2012F6343CS in any application?

A: Yes. Both parts share identical electrical specifications (634 kOhms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C), mechanical package (0805), and environmental compliance (ROHS3, MSL 1). The primary difference is that CRCW0805634KFKEA carries automotive AEC-Q200 certification, making it suitable for automotive applications where RCS2012F6343CS may not be specified.

Q: What is the significance of the height difference between substitute parts?

A: Seated height variations (0.020" to 0.028") reflect manufacturing tolerances across different suppliers. All values remain within standard PCB assembly clearance specifications for 0805 components and do not affect circuit functionality or board layout compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts—RCS2012F6343CS, CRCW0805634KFKEA, ERJ-6ENF6343V, and RC0805FR-07634KL—are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating no special storage or handling requirements.

Q: Which substitute part should be selected for automotive applications?

A: CRCW0805634KFKEA (Vishay Dale) and ERJ-6ENF6343V (Panasonic) are both qualified to Automotive AEC-Q200 standards. RCS2012F6343CS and RC0805FR-07634KL are not specified for automotive use.

Q: Do all substitute parts use the same composition?

A: Yes. All four parts are thick film chip resistors with identical composition, ensuring consistent electrical behavior and temperature stability across the operating range.

Q: Is tape and reel packaging available for all substitute parts?

A: Yes. All identified substitute parts are supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes.

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