RCS2012F8664CS Equivalent & Substitute Parts

Part Overview

The RCS2012F8664CS is an 8.66 MOhms ±1% 0.125W chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package. This thick film resistor features anti-sulfur and moisture-resistant properties, designed for applications requiring high-value precision resistors with enhanced environmental protection. The part maintains Active product status with 710 units currently in stock. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

RCS2012F8664CS

Samsung Electro-MechanicsIn Stock: 778RCS2012F8664CS Datasheet

Current PartRFQ

RC0805FR-078M66L

YAGEOIn Stock: 18460RC0805FR-078M66L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F8664CS is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Resistance value: 8.66 MOhms (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)
• Physical dimensions: 0.079" L x 0.049" W / 2.00mm x 1.25mm (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Environmental:

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

Substitute parts must satisfy all electrical, mechanical, and compliance criteria. Composition type (Thick Film) and environmental features (moisture resistance) must be maintained. Parts are grouped as direct substitutes only when all parameters align without exception.

Parameter Comparison

Engineering Selection Recommendations

The RC0805FR-078M66L (YAGEO) qualifies as a direct substitute for the RCS2012F8664CS (Samsung Electro-Mechanics) based on complete electrical and mechanical equivalence. Both components are Active products with ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for current and future applications.

The primary distinction between the two parts is seated height: the Samsung part measures 0.026" (0.66mm) maximum, while the YAGEO part measures 0.024" (0.60mm) maximum. This 0.002" (0.06mm) difference falls within typical PCB assembly tolerances and does not affect functional performance or board-level compatibility in standard applications.

Both parts maintain identical electrical performance across resistance value, tolerance, power rating, temperature coefficient, and operating temperature range. Composition, package type, and environmental protection features are equivalent. Inventory availability differs, with YAGEO offering 18,450 units compared to Samsung's 710 units in stock.

Selection between these parts should be based on supply chain requirements, lead time considerations, and inventory availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can RC0805FR-078M66L replace RCS2012F8664CS in all applications?

A: Yes. Both parts meet identical electrical specifications (8.66 MOhms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C) and are packaged in the same 0805 (2012 Metric) form factor. Compliance certifications (ROHS3, REACH Unaffected, MSL 1) are equivalent. The 0.002" seated height difference does not affect standard PCB assembly or functional performance.

Q: What is the significance of the seated height difference?

A: The Samsung part has a maximum seated height of 0.026" (0.66mm), while the YAGEO part measures 0.024" (0.60mm). This 0.06mm variation is within standard PCB assembly tolerances and does not impact component placement, solder joint formation, or electrical performance in typical applications.

Q: Are both parts suitable for high-reliability applications?

A: Both parts are Active products with ROHS3 compliance and REACH Unaffected status. Both feature Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Thick film composition and environmental protection features are equivalent. Selection should be based on specific application requirements and supply chain considerations.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution requires exact equivalence in: resistance value (8.66 MOhms), tolerance (±1%), power rating (0.125W), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), package type (0805 / 2012 Metric), physical dimensions (0.079" x 0.049"), composition (Thick Film), and compliance status (ROHS3, REACH Unaffected, MSL 1).

Q: Does the anti-sulfur feature of the Samsung part affect substitution?

A: The Samsung RCS2012F8664CS includes anti-sulfur protection, while the YAGEO RC0805FR-078M66L specifies moisture resistance. Both parts are rated MSL 1 (Unlimited) and operate across identical temperature ranges. If anti-sulfur protection is a specific application requirement, this distinction should be evaluated against actual environmental exposure conditions.

Q: What inventory considerations apply to these parts?

A: Samsung stock is 710 units, while YAGEO stock is 18,450 units. For applications requiring immediate availability or high-volume procurement, the YAGEO part offers greater inventory depth. Both parts maintain Active product status with ongoing manufacturer support.