RCS2012F66R5CS Equivalent & Substitute Parts

Part Overview

The RCS2012F66R5CS is a 66.5 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 is designed for general-purpose applications requiring precision resistive elements with anti-sulfur and moisture-resistant properties. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct interchangeability in circuit designs.

Substiute Parts

RCS2012F66R5CS

Samsung Electro-MechanicsIn Stock: 1229RCS2012F66R5CS Datasheet

Current PartRFQ

CRCW080566R5FKEA

Vishay DaleIn Stock: 31370CRCW080566R5FKEA Datasheet

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ERJ-6ENF66R5V

Panasonic Electronic ComponentsIn Stock: 83291ERJ-6ENF66R5V Datasheet

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RC0805FR-0766R5L

YAGEOIn Stock: 14174RC0805FR-0766R5L Datasheet

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RMCF0805FT66R5

Stackpole Electronics IncIn Stock: 15136RMCF0805FT66R5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F66R5CS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 66.5 Ohms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 0.125W / 1/8W (exact match)
• Temperature coefficient: ±100ppm/°C (exact match)
• Operating temperature range: -55°C ~ 155°C (exact match)

Mechanical & Package Equivalence Requirements:

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

Compliance & Environmental Requirements:

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

All four substitute parts listed meet these equivalence criteria. Additional features such as Automotive AEC-Q200 certification or anti-sulfur properties represent enhancements that do not prevent substitution but may offer extended application scope.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are functionally equivalent to the RCS2012F66R5CS and are suitable for direct replacement in circuit applications. Selection among these alternatives may be based on the following considerations:

CRCW080566R5FKEA (Vishay Dale): This substitute incorporates Automotive AEC-Q200 certification and features the lowest seated height (0.020" / 0.50mm), making it suitable for space-constrained applications and automotive-grade circuit designs.

ERJ-6ENF66R5V (Panasonic Electronic Components): This substitute includes Automotive AEC-Q200 certification with the highest seated height (0.028" / 0.70mm) and maintains the largest inventory availability (83,203 pcs), supporting high-volume procurement requirements.

RC0805FR-0766R5L (YAGEO): This substitute features moisture-resistant properties matching the original part specification with a mid-range seated height (0.024" / 0.60mm) and maintains active product status with standard inventory levels.

RMCF0805FT66R5 (Stackpole Electronics Inc): This substitute includes Automotive AEC-Q200 certification with seated height (0.026" / 0.65mm) matching the original part, supporting automotive and industrial applications.

All substitutes maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) rating, ensuring environmental and regulatory compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can CRCW080566R5FKEA replace RCS2012F66R5CS in all applications?

A: Yes. Both parts share identical electrical specifications (66.5 Ohms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C operating range) and mechanical package format (0805 / 2012 Metric). The primary difference is seated height (0.020" vs 0.026"), which is within typical PCB layout tolerances. CRCW080566R5FKEA includes additional Automotive AEC-Q200 certification.

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 across different suppliers. These differences are typically accommodated within standard PCB design clearances and do not affect electrical performance. Height selection becomes relevant only in applications with strict vertical space constraints or specific assembly requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four substitute parts (CRCW080566R5FKEA, ERJ-6ENF66R5V, RC0805FR-0766R5L, RMCF0805FT66R5) maintain ROHS3 Compliant status, matching the original RCS2012F66R5CS specification.

Q: Which substitute part has the highest inventory availability?

A: ERJ-6ENF66R5V (Panasonic Electronic Components) maintains the largest inventory with 83,203 pcs in stock, followed by CRCW080566R5FKEA (Vishay Dale) with 31,291 pcs.

Q: Do substitute parts with AEC-Q200 certification provide advantages over the original part?

A: Automotive AEC-Q200 certification (present in CRCW080566R5FKEA, ERJ-6ENF66R5V, and RMCF0805FT66R5) indicates compliance with automotive industry reliability and quality standards. This certification extends application scope to automotive environments but does not alter electrical or mechanical compatibility for general-purpose applications.

Q: Is the anti-sulfur feature of RCS2012F66R5CS critical for substitution?

A: Anti-sulfur properties are specific to the RCS2012F66R5CS and represent an enhancement for corrosive environments. Substitute parts without this feature remain electrically and mechanically equivalent. Selection of anti-sulfur variants depends on application environment requirements, not substitution eligibility.

Q: Can these 0805 package resistors be used interchangeably on the same PCB?

A: Yes. All parts conform to the 0805 (2012 Metric) package standard with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and two-terminal configuration, ensuring PCB layout compatibility.