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RCS2012F4R7CS Equivalent & Substitute Parts
Part Overview
The RCS2012F4R7CS is a 4.7 Ohm ±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 is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings are maintained across the same package class.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 4.7 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.125W (1/8W) |
| Package / Case | 0805 (2012 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±300ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Number of Terminations | 2 |
Substitute Part Grouping Explanation
Substitution eligibility for the RCS2012F4R7CS is determined by strict equivalence across the following critical parameters:
Electrical Equivalence Requirements:
- Resistance value: 4.7 Ohms (exact match)
- Tolerance: ±1% (exact match)
- Power rating: 0.125W / 1/8W (exact match)
- Temperature coefficient: ±300ppm/°C (exact match)
- Operating temperature range: -55°C ~ 155°C (exact match or wider)
Mechanical Equivalence Requirements:
- Package / Case: 0805 (2012 Metric) (exact match)
- Supplier device package: 0805 (exact match)
- Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) (exact match)
- Number of terminations: 2 (exact match)
Compliance & Environmental Requirements:
- Composition: Thick Film (exact match)
- RoHS Status: ROHS3 Compliant (minimum requirement)
- Moisture Sensitivity Level: 1 (Unlimited) (exact match)
- REACH Status: REACH Unaffected (exact match)
Substitute parts must satisfy all electrical, mechanical, and compliance criteria simultaneously to ensure direct interchangeability in circuit applications without design modification or performance degradation.
Parameter Comparison
| Parameter | RCS2012F4R7CS (Main Part) | RC2012F4R7CS (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Identical |
| Resistance Value | 4.7 Ohms | 4.7 Ohms | Identical |
| Tolerance | ±1% | ±1% | Identical |
| Power Rating | 0.125W (1/8W) | 0.125W (1/8W) | Identical |
| Package / Case | 0805 (2012 Metric) | 0805 (2012 Metric) | Identical |
| Composition | Thick Film | Thick Film | Identical |
| Temperature Coefficient | ±300ppm/°C | ±300ppm/°C | Identical |
| Operating Temperature Range | -55°C ~ 155°C | -55°C ~ 155°C | Identical |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) | 0.079" L x 0.049" W (2.00mm x 1.25mm) | Identical |
| Height - Seated (Max) | 0.026" (0.66mm) | 0.026" (0.65mm) | Equivalent |
| Number of Terminations | 2 | 2 | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Identical |
| REACH Status | REACH Unaffected | REACH Unaffected | Identical |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Identical |
Engineering Selection Recommendations
The RC2012F4R7CS qualifies as a direct substitute for the RCS2012F4R7CS based on complete electrical and mechanical equivalence. Both components are manufactured by Samsung Electro-Mechanics and maintain identical specifications across all critical parameters including resistance value, tolerance, power rating, package dimensions, and operating temperature range.
Both parts carry ROHS3 compliance certification and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications. The moisture sensitivity level of 1 (Unlimited) on both components indicates no special handling or storage requirements during assembly and deployment.
The seated height differential of 0.01mm (0.66mm versus 0.65mm) is within standard manufacturing tolerances for 0805 package components and does not impact PCB assembly compatibility or circuit performance.
Selection between these parts may be based on inventory availability, lead time, or supply chain considerations, as both components are functionally and mechanically interchangeable without design modification.
Frequently Asked Questions (FAQ)
Q: Can RC2012F4R7CS be used as a direct replacement for RCS2012F4R7CS in existing designs?
A: Yes. The RC2012F4R7CS meets all electrical specifications (4.7 Ohms ±1%, 0.125W, ±300ppm/°C, -55°C ~ 155°C) and mechanical requirements (0805 package, 2.00mm x 1.25mm dimensions) of the RCS2012F4R7CS. No circuit redesign or component requalification is required.
Q: What is the difference between the RCS and RC series designations?
A: The RCS2012F4R7CS includes anti-sulfur features in addition to moisture resistance. The RC2012F4R7CS provides moisture resistance without the anti-sulfur specification. Both series share identical electrical performance and package specifications.
Q: Are there any height compatibility concerns between these parts?
A: No. The seated height difference of 0.01mm (0.66mm for RCS versus 0.65mm for RC) is within standard manufacturing tolerances for 0805 components and does not affect PCB assembly, solder reflow, or component placement.
Q: Do both parts require special handling during assembly?
A: No. Both components carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture bake-out or special storage conditions are required prior to assembly.
Q: Are both parts compliant with current regulatory standards?
A: Yes. Both RCS2012F4R7CS and RC2012F4R7CS are ROHS3 compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations for industrial and commercial applications.
Q: Can these parts be mixed within the same production batch?
A: Yes. Both components are electrically and mechanically equivalent and can be used interchangeably within the same circuit design and production run without performance impact or compatibility issues.
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