RCS2012F3400CS Equivalent & Substitute Parts

Part Overview

The RCS2012F3400CS is a 340 Ohm ±1% 0.125W 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 characteristics. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value
Resistance	340 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
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RCS2012F3400CS are qualified based on the following criteria:

Electrical Parameters (Critical):

Resistance value: 340 Ohms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Critical):

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

Compliance Parameters:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Unaffected status
ECCN: EAR99

All four substitute parts meet these criteria. Additional qualifications include Automotive AEC-Q200 certification for three of the four substitutes (CRCW0805340RFKEA, ERJ-6ENF3400V, RMCF0805FT340R), which represents an enhanced reliability standard applicable to automotive applications.

Parameter Comparison

Parameter	RCS2012F3400CS (Samsung)	CRCW0805340RFKEA (Vishay Dale)	ERJ-6ENF3400V (Panasonic)	RC0805FR-07340RL (YAGEO)	RMCF0805FT340R (Stackpole)
Resistance	340 Ohms	340 Ohms	340 Ohms	340 Ohms	340 Ohms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W
Package	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±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	-55°C ~ 155°C
Height - Seated (Max)	0.026" (0.66mm)	0.020" (0.50mm)	0.028" (0.70mm)	0.024" (0.60mm)	0.026" (0.65mm)
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q200 Rated	No	Yes	Yes	No	Yes

Engineering Selection Recommendations

General Applications (Non-Automotive): All four substitute parts are electrically and mechanically equivalent to the RCS2012F3400CS. Selection among CRCW0805340RFKEA, ERJ-6ENF3400V, RC0805FR-07340RL, and RMCF0805FT340R depends on inventory availability and supplier lead times. All parts maintain ROHS3 compliance and MSL Level 1 rating.

Automotive Applications (AEC-Q200 Required): When Automotive AEC-Q200 qualification is required, select from:

CRCW0805340RFKEA (Vishay Dale)
ERJ-6ENF3400V (Panasonic Electronic Components)
RMCF0805FT340R (Stackpole Electronics Inc)

Height-Constrained Designs: The CRCW0805340RFKEA offers the lowest seated height at 0.020" (0.50mm), suitable for applications with minimal vertical clearance. The ERJ-6ENF3400V has the maximum seated height at 0.028" (0.70mm).

Moisture and Environmental Resistance: The RCS2012F3400CS features anti-sulfur protection. The RC0805FR-07340RL (YAGEO) and RCS2012F3400CS both specify moisture-resistant characteristics. All substitute parts maintain MSL Level 1 rating, indicating unlimited moisture sensitivity protection.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805340RFKEA replace RCS2012F3400CS in non-automotive circuits? A: Yes. Both parts share identical electrical specifications (340 Ohms ±1%, 0.125W), temperature coefficient (±100ppm/°C), operating range (-55°C ~ 155°C), and package dimensions (0805). The CRCW0805340RFKEA includes AEC-Q200 automotive qualification, which does not restrict use in general applications.

Q: What is the significance of AEC-Q200 certification for substitute selection? A: AEC-Q200 is an automotive reliability standard. Three substitute parts (CRCW0805340RFKEA, ERJ-6ENF3400V, RMCF0805FT340R) carry this certification. For automotive designs requiring AEC-Q200 compliance, these three parts are qualified. The RC0805FR-07340RL and RCS2012F3400CS do not carry this certification and should not be used in applications where AEC-Q200 is mandatory.

Q: Are there dimensional differences that affect PCB layout? A: Seated height varies among substitutes: CRCW0805340RFKEA (0.020"), RC0805FR-07340RL (0.024"), RCS2012F3400CS (0.026"), RMCF0805FT340R (0.026"), and ERJ-6ENF3400V (0.028"). All other dimensions (length 0.079", width 0.049") are identical. Height differences are within typical PCB assembly tolerances but should be verified for applications with strict vertical clearance requirements.

Q: Do all substitute parts meet RoHS3 compliance? A: Yes. All five parts (RCS2012F3400CS, CRCW0805340RFKEA, ERJ-6ENF3400V, RC0805FR-07340RL, RMCF0805FT340R) are ROHS3 Compliant and REACH Unaffected.

Q: What is MSL Level 1, and why is it important? A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without moisture control requirements. All parts in this comparison carry MSL Level 1 rating, eliminating moisture-related handling constraints during storage and assembly.

Q: Can these parts be used interchangeably in production? A: Yes, for non-automotive applications. All parts meet identical electrical and mechanical specifications. For automotive applications, only AEC-Q200 qualified parts (CRCW0805340RFKEA, ERJ-6ENF3400V, RMCF0805FT340R) should be used if AEC-Q200 compliance is required by design specifications.

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