RCS2012J680CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012J680CS is a 68 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) power dissipation in 0805 (2012 Metric) package format. This component features anti-sulfur and moisture-resistant properties, operating across the temperature range of -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and maintains Active product status. Equivalent and substitute parts are identified based on matching resistance value, package format, operating temperature range, and composition type, with allowances for tolerance and power rating variations where application requirements permit.

Substiute Parts

RCS2012J680CS

Samsung Electro-MechanicsIn Stock: 1182RCS2012J680CS Datasheet

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RC2012F680CS

Samsung Electro-MechanicsIn Stock: 883RC2012F680CS Datasheet

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AC0805FR-0768RL

YAGEOIn Stock: 773AC0805FR-0768RL Datasheet

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CRCW080568R0FKEA

Vishay DaleIn Stock: 58326CRCW080568R0FKEA Datasheet

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CRCW080568R0FKEAHP

Vishay DaleIn Stock: 8029CRCW080568R0FKEAHP Datasheet

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ERJ-6ENF68R0V

Panasonic Electronic ComponentsIn Stock: 155002ERJ-6ENF68R0V Datasheet

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ERJ-UP6F68R0V

Panasonic Electronic ComponentsIn Stock: 5837ERJ-UP6F68R0V Datasheet

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RC0805FR-0768RL

YAGEOIn Stock: 113578RC0805FR-0768RL Datasheet

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RC0805JR-0768RL

YAGEOIn Stock: 268361RC0805JR-0768RL Datasheet

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RCS080568R0FKEA

Vishay DaleIn Stock: 69906RCS080568R0FKEA Datasheet

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RMCF0805FT68R0

Stackpole Electronics IncIn Stock: 34145RMCF0805FT68R0 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RCS2012J680CS are classified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Resistance Value: 68 Ohms (exact match required)
• Package Format: 0805 (2012 Metric) (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)

Secondary Allowable Variations:

• Tolerance: ±5% (main part) to ±1% (substitute parts) — tighter tolerance is acceptable
• Power Rating: 0.125W (main part) to 0.5W (substitute parts) — higher power rating is acceptable
• Packaging Format: Tape & Reel (TR) or Cut Tape (CT) — both acceptable for component sourcing
• Features: Anti-Sulfur and Moisture Resistant properties may vary; AEC-Q200 automotive qualification is an additional feature in some substitutes

Substitute parts are grouped into two categories based on power rating alignment:

Category A — 0.125W (1/8W) Rated Substitutes: Direct functional equivalents with identical power dissipation capacity. These parts maintain the same thermal and electrical performance envelope as the main part.

Category B — 0.5W (1/2W) Rated Substitutes: Higher power-rated alternatives suitable for applications where increased thermal margin or pulse withstanding capability is beneficial. These parts occupy the same physical footprint but provide enhanced power handling.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Power Rating — 0.125W):

RC2012F680CS (Samsung Electro-Mechanics) provides the closest functional match with tighter tolerance specification (±1% versus ±5%). This part maintains identical power rating and operating parameters while offering improved resistance accuracy. Suitable for applications where tolerance tightening does not introduce cost or sourcing constraints.

RC0805JR-0768RL (YAGEO) matches the original tolerance specification (±5%) and power rating (0.125W), providing a direct electrical equivalent from an alternative manufacturer. This part is suitable for direct replacement in non-automotive applications.

RC0805FR-0768RL (YAGEO) offers ±1% tolerance with identical power rating, providing improved accuracy over the original specification.

Automotive-Qualified Substitutes (0.125W, AEC-Q200):

AC0805FR-0768RL (YAGEO), ERJ-6ENF68R0V (Panasonic Electronic Components), and RMCF0805FT68R0 (Stackpole Electronics Inc) are all AEC-Q200 qualified alternatives with ±1% tolerance and 0.125W power rating. These parts are suitable for applications requiring automotive-grade component qualification while maintaining identical electrical and thermal performance.

Higher Power-Rated Substitutes (0.5W, Enhanced Thermal Margin):

CRCW080568R0FKEAHP (Vishay Dale), ERJ-UP6F68R0V (Panasonic Electronic Components), and RCS080568R0FKEA (Vishay Dale) provide 0.5W power rating with AEC-Q200 qualification and pulse withstanding capability. These parts are suitable for applications where increased thermal margin, pulse handling, or enhanced reliability is required. ERJ-UP6F68R0V additionally includes anti-sulfur protection matching the original part specification.

All substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and Active product status. Selection should be based on application requirements for tolerance specification, automotive qualification, and power rating margin.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RCS2012J680CS with a ±1% tolerance part?

A: Yes. The RCS2012J680CS specifies ±5% tolerance. Substitute parts with ±1% tolerance (such as RC2012F680CS, AC0805FR-0768RL, or ERJ-6ENF68R0V) provide tighter resistance accuracy and are functionally compatible. The ±1% tolerance is a subset of the ±5% tolerance range, ensuring the substituted part meets or exceeds the original specification.

Q: What is the difference between 0.125W and 0.5W rated parts?

A: Power rating indicates the maximum continuous power dissipation the resistor can handle. The 0.125W (1/8W) rating of the original part is suitable for applications with lower power dissipation requirements. The 0.5W (1/2W) rated substitutes (CRCW080568R0FKEAHP, ERJ-UP6F68R0V, RCS080568R0FKEA) provide increased thermal margin and pulse withstanding capability. Both ratings are compatible with the same 0805 package footprint. Selection of higher power rating introduces no electrical incompatibility and may improve reliability in applications with transient power spikes.

Q: Are AEC-Q200 qualified parts suitable for non-automotive applications?

A: Yes. AEC-Q200 qualification indicates the part meets automotive industry reliability and qualification standards. Parts with AEC-Q200 qualification (AC0805FR-0768RL, CRCW080568R0FKEA, CRCW080568R0FKEAHP, ERJ-6ENF68R0V, ERJ-UP6F68R0V, RCS080568R0FKEA, RMCF0805FT68R0) are suitable for use in non-automotive applications and provide equivalent or enhanced reliability compared to non-qualified alternatives.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging is supplied in smaller quantities on tape segments, suitable for lower-volume or manual assembly operations. Both packaging formats contain identical components; selection is based on assembly volume and handling requirements, not electrical performance.

Q: Does the RCS2012J680CS anti-sulfur feature affect substitute part selection?

A: The anti-sulfur feature of the RCS2012J680CS is an environmental protection characteristic. Most substitute parts do not explicitly specify anti-sulfur protection, with the exception of ERJ-UP6F68R0V, which includes this feature. For applications where anti-sulfur protection is critical, ERJ-UP6F68R0V is the recommended substitute. For general applications, the absence of explicit anti-sulfur specification in other substitutes does not indicate incompatibility; it reflects different manufacturing specifications and environmental testing protocols.

Q: Can I use a substitute part with different height specifications?

A: The RCS2012J680CS specifies maximum seated height of 0.026" (0.66mm). Substitute parts have seated heights ranging from 0.020" (0.50mm) to 0.028" (0.70mm). Parts with lower seated height (0.020" or 0.024") are suitable for applications with height constraints. Parts with higher seated height (0.028") may require verification of PCB clearance in space-constrained designs. All parts maintain the same 0805 package footprint and are mechanically compatible with standard 0805 land patterns.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original RCS2012J680CS specification. All parts are REACH Unaffected and classified as EAR99 for export control purposes. All parts maintain Active product status, ensuring continued availability and supply chain stability.