RCS2012F4121CS Equivalent & Substitute Parts

Part Overview

The RCS2012F4121CS is a 4.12 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package format. This component is rated for 0.125W (1/8W) power dissipation and features anti-sulfur and moisture-resistant construction. The part maintains Active product status with 1086 units currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental compliance certifications to ensure direct interchangeability in circuit applications.

Substiute Parts

RCS2012F4121CS

Samsung Electro-MechanicsIn Stock: 1177RCS2012F4121CS Datasheet

Current PartRFQ

ERJ-6ENF4121V

Panasonic Electronic ComponentsIn Stock: 195878ERJ-6ENF4121V Datasheet

SimilarRFQ

RC0805FR-074K12L

YAGEOIn Stock: 241016RC0805FR-074K12L Datasheet

SimilarRFQ

RMCF0805FT4K12

Stackpole Electronics IncIn Stock: 1397RMCF0805FT4K12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RCS2012F4121CS is determined by strict equivalence across the following parameters:

Electrical Specifications:

• Resistance value: 4.12 kOhms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Specifications:

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

Compliance & Environmental:

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

All identified substitute parts meet these core parameters. Variations in seated height and specific feature sets (anti-sulfur vs. automotive AEC-Q200 certification) do not affect functional interchangeability in standard applications.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed—RCS2012F4121CS, ERJ-6ENF4121V, RC0805FR-074K12L, and RMCF0805FT4K12—are functionally equivalent for direct substitution based on electrical and mechanical parameters. Each part maintains Active product status and full compliance with ROHS3 and REACH requirements.

Selection Considerations Based on Provided Data:

ERJ-6ENF4121V (Panasonic): Includes automotive AEC-Q200 certification, suitable for applications requiring automotive-grade reliability. Highest inventory availability at 195,777 units.

RC0805FR-074K12L (YAGEO): Offers the lowest seated height at 0.024" (0.60mm), beneficial for space-constrained PCB layouts. Available in Cut Tape and Digi-Reel packaging options. Inventory: 240,972 units.

RMCF0805FT4K12 (Stackpole): Includes automotive AEC-Q200 certification with seated height of 0.026" (0.65mm). Limited inventory at 1,287 units.

RCS2012F4121CS (Samsung): Features anti-sulfur construction in addition to moisture resistance. Current inventory: 1,086 units.

All parts share identical electrical specifications, operating temperature range, and compliance certifications. Selection should be based on packaging availability, inventory requirements, and specific environmental feature requirements (automotive certification or anti-sulfur treatment).

Frequently Asked Questions (FAQ)

Q: Can ERJ-6ENF4121V replace RCS2012F4121CS in any application?

A: Yes. Both parts share identical resistance (4.12 kOhms), tolerance (±1%), power rating (0.125W), package format (0805), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The primary difference is that ERJ-6ENF4121V includes automotive AEC-Q200 certification, which does not prevent its use in non-automotive applications.

Q: What is the significance of the seated height differences between these parts?

A: Seated height variations (0.024" to 0.028") are minor and typically do not affect PCB assembly or circuit performance in standard applications. RC0805FR-074K12L has the lowest profile at 0.024" (0.60mm), which may be advantageous in space-constrained designs. All parts remain within the 0805 package specification.

Q: Are there packaging differences that affect interchangeability?

A: RCS2012F4121CS, ERJ-6ENF4121V, and RMCF0805FT4K12 are supplied in Tape & Reel (TR) format. RC0805FR-074K12L is available in Cut Tape (CT) and Digi-Reel® formats. These packaging differences affect handling and assembly processes but do not impact electrical or mechanical interchangeability of the component itself.

Q: Do all substitute parts meet the same environmental compliance standards?

A: Yes. All four parts are ROHS3 Compliant, REACH Unaffected, and maintain Moisture Sensitivity Level 1 (Unlimited). All parts carry EAR99 ECCN classification and identical HTSUS codes (8533.21.0030).

Q: What distinguishes the feature sets of these resistors?

A: RCS2012F4121CS features anti-sulfur and moisture-resistant construction. ERJ-6ENF4121V and RMCF0805FT4K12 include automotive AEC-Q200 certification. RC0805FR-074K12L features moisture-resistant construction. These feature differences do not affect functional equivalence for standard circuit applications.

Q: Is there a difference in temperature coefficient performance between these parts?

A: No. All four parts specify an identical temperature coefficient of ±100ppm/°C and operate across the same temperature range of -55°C ~ 155°C.