RCS2012F21R5CS Equivalent & Substitute Parts

Part Overview

The RCS2012F21R5CS is a 21.5 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) in 0805 (2012 Metric) package format. This component features anti-sulfur and moisture-resistant construction with operating temperature range of -55°C to 155°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

RCS2012F21R5CS

Samsung Electro-MechanicsIn Stock: 1103RCS2012F21R5CS Datasheet

Current PartRFQ

CRCW080521R5FKEA

Vishay DaleIn Stock: 20925CRCW080521R5FKEA Datasheet

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ERJ-6ENF21R5V

Panasonic Electronic ComponentsIn Stock: 68079ERJ-6ENF21R5V Datasheet

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RC0805FR-0721R5L

YAGEOIn Stock: 1748RC0805FR-0721R5L Datasheet

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RMCF0805FT21R5

Stackpole Electronics IncIn Stock: 3406RMCF0805FT21R5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RCS2012F21R5CS are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 21.5 Ohms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match):

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

Compliance Parameters (Must Match):

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

All four substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the RCS2012F21R5CS in standard applications.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are Active status components with ROHS3 compliance and REACH Unaffected designation, matching the regulatory requirements of the RCS2012F21R5CS.

CRCW080521R5FKEA (Vishay Dale): Features Automotive AEC-Q200 qualification with lowest seated height of 0.020" (0.50mm). Suitable for applications requiring automotive-grade reliability.

ERJ-6ENF21R5V (Panasonic Electronic Components): Features Automotive AEC-Q200 qualification with highest seated height of 0.028" (0.70mm). Highest inventory availability at 68,018 pieces. Suitable for automotive applications with space constraints less critical.

RC0805FR-0721R5L (YAGEO): Moisture-resistant thick film construction without automotive qualification. Seated height of 0.024" (0.60mm). Suitable for general industrial applications.

RMCF0805FT21R5 (Stackpole Electronics Inc): Features Automotive AEC-Q200 qualification with seated height of 0.026" (0.65mm), matching the original part height. Suitable for automotive applications requiring height compatibility.

Frequently Asked Questions (FAQ)

Q: Can CRCW080521R5FKEA replace RCS2012F21R5CS in all applications?

A: CRCW080521R5FKEA meets all electrical and mechanical specifications. The lower seated height of 0.020" (0.50mm) versus 0.026" (0.66mm) on the original part is acceptable for standard PCB assembly. Automotive AEC-Q200 qualification provides additional reliability assurance.

Q: What is the difference between automotive-qualified and non-automotive substitute parts?

A: CRCW080521R5FKEA, ERJ-6ENF21R5V, and RMCF0805FT21R5 carry Automotive AEC-Q200 ratings. RC0805FR-0721R5L does not. AEC-Q200 qualification indicates compliance with automotive reliability and quality standards. Selection depends on application requirements.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts are supplied in Tape & Reel (TR) packaging in 0805 (2012 Metric) format, identical to the RCS2012F21R5CS.

Q: Does seated height variation affect PCB assembly compatibility?

A: Seated height variations range from 0.020" to 0.028" (0.50mm to 0.70mm). These differences are within standard PCB assembly tolerances and do not affect electrical performance or mechanical fit in standard 0805 footprints.

Q: Which substitute part has the best inventory availability?

A: ERJ-6ENF21R5V (Panasonic) has the highest inventory at 68,018 pieces. CRCW080521R5FKEA (Vishay Dale) has 20,866 pieces. Both exceed typical lead time requirements.

Q: Are all parts ROHS3 compliant?

A: All parts listed, including the main part RCS2012F21R5CS and all four substitutes, are ROHS3 compliant and REACH unaffected.