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RCS2012J685CS Equivalent & Substitute Parts Reference
Part Overview
The RCS2012J685CS is a 6.8 MOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component operates at 0.125W (1/8W) power rating with anti-sulfur and moisture-resistant properties. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, package dimensions, and operational parameters to ensure direct circuit board compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 6.8 MOhms |
| Tolerance | ±5% |
| Power Rating | 0.125W (1/8W) |
| Package / Case | 0805 (2012 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the RCS2012J685CS are qualified based on the following criteria:
Electrical Compatibility: All substitute parts maintain the 6.8 MOhms resistance value and 0.125W power rating. Tolerance variations (±1% versus ±5%) represent tighter specifications and are acceptable substitutes for applications requiring the original ±5% tolerance.
Package Compatibility: All substitute parts use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm), ensuring direct PCB placement compatibility.
Thermal Characteristics: All substitute parts maintain the ±100ppm/°C temperature coefficient and -55°C ~ 155°C operating temperature range, matching the original part's thermal performance envelope.
Compliance & Environmental: All substitute parts are ROHS3 compliant with MSL 1 rating, matching the original part's regulatory and moisture handling requirements.
Composition & Construction: All substitute parts use thick film construction, maintaining the same fundamental technology as the original part.
The substitute parts differ in manufacturer-specific features (anti-sulfur/moisture resistant, automotive AEC-Q200, or high voltage) and tolerance specifications, but these variations do not affect functional substitution within the specified electrical and mechanical parameters.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Temp Range | Height Max | Features | RoHS | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RCS2012J685CS | Samsung Electro-Mechanics | 6.8 MOhms | ±5% | 0.125 | 0805 | ±100ppm/°C | -55°C ~ 155°C | 0.026" (0.66mm) | Anti-Sulfur, Moisture Resistant | ROHS3 | 1 |
| CRCW08056M80FKEA | Vishay Dale | 6.8 MOhms | ±1% | 0.125 | 0805 | ±100ppm/°C | -55°C ~ 155°C | 0.020" (0.50mm) | Automotive AEC-Q200 | ROHS3 | 1 |
| RC0805FR-076M8L | YAGEO | 6.8 MOhms | ±1% | 0.125 | 0805 | ±100ppm/°C | -55°C ~ 155°C | 0.024" (0.60mm) | Moisture Resistant | ROHS3 | 1 |
| RC0805JR-076M8L | YAGEO | 6.8 MOhms | ±5% | 0.125 | 0805 | ±100ppm/°C | -55°C ~ 155°C | 0.024" (0.60mm) | Moisture Resistant | ROHS3 | 1 |
| RCV08056M80FKEA | Vishay Dale | 6.8 MOhms | ±1% | 0.125 | 0805 | ±100ppm/°C | -55°C ~ 155°C | 0.020" (0.50mm) | High Voltage | ROHS3 | 1 |
Engineering Selection Recommendations
Direct Tolerance Match: RC0805JR-076M8L (YAGEO) provides identical ±5% tolerance specification matching the RCS2012J685CS, making it the closest functional equivalent for applications where tolerance specification is a design requirement.
Tighter Tolerance Substitutes: CRCW08056M80FKEA (Vishay Dale), RC0805FR-076M8L (YAGEO), and RCV08056M80FKEA (Vishay Dale) all offer ±1% tolerance, which represents improved precision over the original ±5% specification. These parts are suitable for applications where tighter tolerance provides design margin.
Automotive Applications: CRCW08056M80FKEA carries AEC-Q200 automotive qualification, suitable for automotive circuit applications requiring this certification.
High Voltage Applications: RCV08056M80FKEA is specified for high voltage applications, appropriate for circuits requiring enhanced voltage performance characteristics.
All substitute parts maintain: ROHS3 compliance, MSL 1 rating, 0805 package footprint compatibility, ±100ppm/°C temperature coefficient, and -55°C ~ 155°C operating temperature range. Selection among substitutes depends on application-specific requirements for tolerance grade, automotive qualification, or high voltage performance.
Frequently Asked Questions (FAQ)
Q: Can CRCW08056M80FKEA replace RCS2012J685CS in any circuit?
A: CRCW08056M80FKEA is electrically compatible as a substitute. It maintains the same 6.8 MOhms resistance, 0.125W power rating, and 0805 package dimensions. The ±1% tolerance is tighter than the original ±5%, which is acceptable for direct substitution. Verify that the automotive AEC-Q200 feature does not conflict with your application requirements.
Q: What is the difference between RC0805JR-076M8L and RC0805FR-076M8L?
A: Both are YAGEO 0805 package 6.8 MOhms thick film resistors with identical dimensions and thermal characteristics. RC0805JR-076M8L maintains ±5% tolerance matching the original RCS2012J685CS specification. RC0805FR-076M8L offers ±1% tolerance for improved precision. Select based on your circuit's tolerance requirement.
Q: Are all substitute parts suitable for PCB reflow soldering?
A: All substitute parts use 0805 (2012 Metric) package with standard SMD terminations and are designed for reflow soldering processes. Height variations (0.020" to 0.026" seated maximum) are within standard 0805 package tolerances and do not affect reflow compatibility.
Q: Does RCV08056M80FKEA provide better performance than the original part?
A: RCV08056M80FKEA is specified for high voltage applications and offers ±1% tolerance versus the original ±5%. It is functionally compatible for direct substitution. Select this part only if your circuit requires high voltage performance characteristics or tighter tolerance specification.
Q: Can I use these substitute parts interchangeably on the same PCB assembly?
A: All substitute parts share identical 0805 package footprints and electrical specifications (6.8 MOhms, 0.125W, ±100ppm/°C, -55°C ~ 155°C). They are mechanically and electrically interchangeable at the PCB level. Verify that tolerance grades and any application-specific features (automotive, high voltage) align with your design requirements.
Q: What is the significance of MSL 1 rating for all these parts?
A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture baking requirements. All listed parts, including the original RCS2012J685CS, can be stored and handled without special moisture control procedures, simplifying supply chain and assembly operations.
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