Equivalent & Substitute Parts for RCS2012F21R0CS

Part Overview

The RCS2012F21R0CS is a 21 Ohm ±1% 0.125W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. 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 when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

RCS2012F21R0CS

Samsung Electro-MechanicsIn Stock: 784RCS2012F21R0CS Datasheet

Current PartRFQ

CRCW080521R0FKEA

Vishay DaleIn Stock: 27306CRCW080521R0FKEA Datasheet

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ERJ-6ENF21R0V

Panasonic Electronic ComponentsIn Stock: 86159ERJ-6ENF21R0V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F21R0CS is determined by strict alignment of the following parameters:

Critical Electrical Parameters:

• Resistance value: 21 Ohms (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)

Critical Mechanical Parameters:

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

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• REACH Status: REACH Unaffected (exact match required)

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the RCS2012F21R0CS in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three components—RCS2012F21R0CS (Samsung Electro-Mechanics), CRCW080521R0FKEA (Vishay Dale), and ERJ-6ENF21R0V (Panasonic Electronic Components)—are Active product status and fully compliant with ROHS3 and REACH requirements. Each component is rated for identical electrical specifications (21 Ohms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C) and mechanical package dimensions (0805 / 2012 Metric).

The Vishay Dale CRCW080521R0FKEA and Panasonic ERJ-6ENF21R0V both carry AEC-Q200 automotive qualification ratings, which the Samsung RCS2012F21R0CS does not specify. This distinction is relevant only if automotive-grade certification is a design requirement. For general-purpose applications without automotive qualification mandates, all three parts are functionally equivalent.

Height variation exists among the three components (Samsung: 0.66mm maximum, Vishay: 0.50mm maximum, Panasonic: 0.70mm maximum). This difference is within typical PCB assembly tolerances for 0805 packages and does not affect electrical performance or standard reflow soldering processes.

Frequently Asked Questions (FAQ)

Q: Can CRCW080521R0FKEA replace RCS2012F21R0CS in any application?

A: Yes. Both components share identical electrical specifications (21 Ohms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C), composition (thick film), package format (0805 / 2012 Metric), and compliance certifications (ROHS3, REACH Unaffected, MSL 1). The CRCW080521R0FKEA includes AEC-Q200 automotive qualification, which provides additional assurance for applications requiring automotive-grade components.

Q: Can ERJ-6ENF21R0V replace RCS2012F21R0CS in any application?

A: Yes. Both components share identical electrical specifications (21 Ohms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C), composition (thick film), package format (0805 / 2012 Metric), and compliance certifications (ROHS3, REACH Unaffected, MSL 1). The ERJ-6ENF21R0V includes AEC-Q200 automotive qualification, which provides additional assurance for applications requiring automotive-grade components.

Q: Are there differences in physical dimensions between these three parts?

A: All three components have identical length and width dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). Maximum seated height varies slightly: Samsung RCS2012F21R0CS (0.66mm), Vishay CRCW080521R0FKEA (0.50mm), and Panasonic ERJ-6ENF21R0V (0.70mm). These variations fall within standard 0805 package tolerances and do not affect PCB assembly or circuit performance.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive electronics qualification standard. The Vishay CRCW080521R0FKEA and Panasonic ERJ-6ENF21R0V carry this certification, indicating they meet automotive industry reliability and performance requirements. The Samsung RCS2012F21R0CS does not specify AEC-Q200 qualification but remains suitable for non-automotive applications.

Q: Are all three parts available in Tape & Reel packaging?

A: Yes. All three components—RCS2012F21R0CS, CRCW080521R0FKEA, and ERJ-6ENF21R0V—are supplied in Tape & Reel (TR) packaging format, suitable for automated pick-and-place assembly processes.

Q: Do these components have identical moisture sensitivity ratings?

A: Yes. All three components are rated MSL 1 (Unlimited), indicating they have unlimited shelf life under normal storage conditions and do not require special moisture control during handling or storage.