RCS2012F4123CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F4123CS is a 412 kOhms ±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. The part is ROHS3 compliant and suitable for general industrial and consumer applications requiring precision resistive elements with environmental protection.

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Resistance	412 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 RCS2012F4123CS is determined by strict alignment of the following critical parameters:

Electrical Specifications:

Resistance value: 412 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.125W / 1/8W (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Specifications:

Package type: 0805 (2012 Metric) (exact match required)
Composition: Thick Film (exact match required)
Number of terminations: 2 (exact match required)

Compliance & Environmental:

RoHS3 compliance (required)
Moisture Sensitivity Level 1 (required)
REACH Unaffected status (required)

All four substitute parts listed meet these criteria. Variations in packaging format (Tape & Reel vs. Cut Tape), manufacturer-specific features (Automotive AEC-Q200 certification), and minor dimensional tolerances in seated height do not disqualify substitution eligibility.

Parameter Comparison

Parameter	RCS2012F4123CS (Samsung)	CRCW0805412KFKEA (Vishay Dale)	ERJ-6ENF4123V (Panasonic)	RC0805FR-07412KL (YAGEO)	RMCF0805FT412K (Stackpole)
Resistance	412 kOhms	412 kOhms	412 kOhms	412 kOhms	412 kOhms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W
Package / Case	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
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	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)	0.026" (0.65mm)
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of Terminations	2	2	2	2	2
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All four substitute parts are classified as Active product status and maintain full ROHS3 compliance and REACH Unaffected designation, matching the regulatory requirements of the original RCS2012F4123CS component.

CRCW0805412KFKEA (Vishay Dale): This substitute carries Automotive AEC-Q200 certification, indicating qualification for automotive-grade applications. The seated height of 0.020" (0.50mm) is the lowest among all options, suitable for space-constrained PCB layouts.

ERJ-6ENF4123V (Panasonic Electronic Components): This substitute also carries Automotive AEC-Q200 certification. The seated height of 0.028" (0.70mm) is the highest among all options. Inventory availability is the highest at 70,058 pieces.

RC0805FR-07412KL (YAGEO): This substitute features moisture-resistant characteristics matching the original part. The seated height of 0.024" (0.60mm) provides a mid-range profile. No automotive certification is specified.

RMCF0805FT412K (Stackpole Electronics Inc): This substitute carries Automotive AEC-Q200 certification. The seated height of 0.026" (0.65mm) closely matches the original component at 0.026" (0.66mm), providing the most direct dimensional alignment.

Selection among these substitutes depends on application requirements: automotive-grade applications benefit from AEC-Q200 certified options; space-constrained designs may prioritize lower seated height; general industrial applications accept any of the four options.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805412KFKEA replace RCS2012F4123CS in any application?

A: Yes. Both components share identical electrical specifications (412 kOhms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C), identical package dimensions (0805 / 2012 Metric), and equivalent compliance certifications (ROHS3, REACH Unaffected, MSL 1). The Automotive AEC-Q200 certification of the Vishay part is an additional qualification that does not prevent use in non-automotive applications.

Q: What is the significance of the seated height differences among substitute parts?

A: Seated height variations (0.020" to 0.028") reflect manufacturing tolerances and design differences among manufacturers. These variations are within acceptable limits for standard PCB assembly processes. Selection should consider specific PCB clearance requirements and component density constraints. The original RCS2012F4123CS at 0.026" (0.66mm) is most closely matched by RMCF0805FT412K at 0.026" (0.65mm).

Q: Are all substitute parts suitable for high-temperature applications?

A: Yes. All substitute parts, including the original RCS2012F4123CS, operate across the identical temperature range of -55°C ~ 155°C with ±100ppm/°C temperature coefficient. No substitute part offers superior or inferior thermal performance.

Q: What packaging formats are available for these substitutes?

A: The original RCS2012F4123CS is supplied in Tape & Reel (TR) format. Substitute parts are available in either Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. Packaging format selection depends on assembly equipment compatibility and procurement volume requirements, not electrical or mechanical compatibility.

Q: Do any substitute parts offer enhanced environmental protection compared to the original?

A: The original RCS2012F4123CS features anti-sulfur and moisture-resistant characteristics. RC0805FR-07412KL (YAGEO) specifies moisture-resistant properties. CRCW0805412KFKEA, ERJ-6ENF4123V, and RMCF0805FT412K do not explicitly list anti-sulfur or moisture-resistant features in their specifications. All parts maintain MSL 1 (Unlimited) rating, indicating equivalent moisture sensitivity performance.

Q: Can automotive-grade substitutes be used in non-automotive applications?

A: Yes. Automotive AEC-Q200 certification indicates enhanced qualification standards and reliability testing. Use of AEC-Q200 certified parts (CRCW0805412KFKEA, ERJ-6ENF4123V, RMCF0805FT412K) in non-automotive applications presents no compatibility issues and may provide additional reliability margin.

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