Equivalent & Substitute Parts for RCS2012F6491CS

Part Overview

The RCS2012F6491CS is a 6.49 kOhms ±1% 0.125W chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This thick film resistor features anti-sulfur and moisture-resistant properties, with an operating temperature range of -55°C to 155°C. The part is currently active in production status with 821 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to support component procurement flexibility and supply chain continuity.

Substiute Parts

RCS2012F6491CS

Samsung Electro-MechanicsIn Stock: 850RCS2012F6491CS Datasheet

Current PartRFQ

AC0805FR-076K49L

YAGEOIn Stock: 15723AC0805FR-076K49L Datasheet

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CRCW08056K49FKEA

Vishay DaleIn Stock: 16111CRCW08056K49FKEA Datasheet

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CRCW08056K49FKEAHP

Vishay DaleIn Stock: 5851CRCW08056K49FKEAHP Datasheet

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ERJ-6ENF6491V

Panasonic Electronic ComponentsIn Stock: 29871ERJ-6ENF6491V Datasheet

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RC0805FR-076K49L

YAGEOIn Stock: 99194RC0805FR-076K49L Datasheet

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RCS08056K49FKEA

Vishay DaleIn Stock: 8067RCS08056K49FKEA Datasheet

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RMCF0805FT6K49

Stackpole Electronics IncIn Stock: 53485RMCF0805FT6K49 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RCS2012F6491CS are classified based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Resistance value: 6.49 kOhms
• Tolerance: ±1%
• Package: 0805 (2012 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature: -55°C to 155°C
• RoHS3 Compliance
• MSL Rating: 1 (Unlimited)

Grouping Logic:

Group 1 - Direct Equivalents (0.125W Power Rating): Parts with identical power rating of 0.125W (1/8W). These include AC0805FR-076K49L (YAGEO), CRCW08056K49FKEA (Vishay Dale), ERJ-6ENF6491V (Panasonic), RC0805FR-076K49L (YAGEO), and RMCF0805FT6K49 (Stackpole Electronics). All maintain the same thermal and electrical performance envelope as the main part.

Group 2 - Higher Power Rating Variants (0.5W Power Rating): Parts with elevated power rating of 0.5W (1/2W) while maintaining all other electrical specifications. These include CRCW08056K49FKEAHP (Vishay Dale) and RCS08056K49FKEA (Vishay Dale). These parts provide enhanced pulse withstanding capability and thermal margin in the same 0805 package footprint.

All substitute parts maintain identical resistance value, tolerance, package dimensions, temperature coefficient, and compliance certifications. Differences in height-seated maximum and specific feature sets (automotive AEC-Q200 ratings, pulse withstanding capability) are noted for application-specific selection.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (0.125W Applications):

When the application requires identical power dissipation characteristics to the RCS2012F6491CS, the following parts are suitable direct substitutes: AC0805FR-076K49L, CRCW08056K49FKEA, ERJ-6ENF6491V, RC0805FR-076K49L, and RMCF0805FT6K49. All maintain 0.125W power rating and are ROHS3 compliant with MSL 1 rating. Selection among these options depends on availability, lead time, and specific feature requirements (automotive AEC-Q200 certification where applicable).

For Enhanced Thermal Performance (0.5W Applications):

When circuit design permits or requires higher power dissipation capability, CRCW08056K49FKEAHP and RCS08056K49FKEA provide 0.5W power rating in the same 0805 package footprint. These parts include pulse withstanding capability and automotive AEC-Q200 certification, suitable for applications with transient power events or thermal margin requirements.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard PCB assembly processes and storage conditions. Automotive-rated variants (AC0805FR-076K49L, CRCW08056K49FKEA, CRCW08056K49FKEAHP, ERJ-6ENF6491V, RCS08056K49FKEA, RMCF0805FT6K49) carry AEC-Q200 certification for automotive applications.

Packaging Format:

The main part RCS2012F6491CS is supplied in Tape & Reel (TR) format. RC0805FR-076K49L is supplied in Cut Tape (CT) & Digi-Reel® format. All other substitutes are supplied in Tape & Reel (TR) format, matching the original packaging specification.

Frequently Asked Questions (FAQ)

Q: Can CRCW08056K49FKEAHP (0.5W) be used as a direct replacement for RCS2012F6491CS (0.125W)?

A: CRCW08056K49FKEAHP is electrically and mechanically compatible with RCS2012F6491CS. The 0.5W power rating is a superset of the 0.125W requirement, providing additional thermal margin. Physical dimensions remain identical (0805 package, 2.00mm x 1.25mm). This substitution is valid when circuit board layout and thermal design accommodate the component. No design changes are required.

Q: What is the difference between AC0805FR-076K49L and RC0805FR-076K49L?

A: Both are YAGEO 6.49 kOhms ±1% 0.125W 0805 resistors. AC0805FR-076K49L includes automotive AEC-Q200 certification and is supplied in Tape & Reel format. RC0805FR-076K49L is supplied in Cut Tape (CT) & Digi-Reel® format without automotive certification. Electrical specifications and package dimensions are identical. Selection depends on application requirements and packaging format compatibility with assembly equipment.

Q: Are all substitute parts suitable for high-temperature applications?

A: All substitute parts and the main part RCS2012F6491CS operate across the identical temperature range of -55°C to 155°C with ±100ppm/°C temperature coefficient. All are suitable for high-temperature applications within this specified range.

Q: What is MSL 1 rating and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life and moisture exposure tolerance. Components with MSL 1 do not require special moisture-controlled storage or baking procedures prior to assembly. All listed parts carry MSL 1 rating, ensuring compatibility with standard component storage and handling practices.

Q: Can I substitute a part with automotive AEC-Q200 certification into a non-automotive application?

A: Yes. Automotive AEC-Q200 certification indicates enhanced qualification testing and reliability standards. Parts with this certification are suitable for non-automotive applications. The reverse substitution (non-certified parts into automotive applications) is not recommended without design review.

Q: What are the physical dimension differences between substitute parts?

A: All parts maintain identical package dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm). Height-seated maximum varies slightly: RCS2012F6491CS (0.66mm), AC0805FR-076K49L (0.60mm), CRCW08056K49FKEA (0.50mm), ERJ-6ENF6491V (0.70mm), RC0805FR-076K49L (0.60mm), RCS08056K49FKEA (0.50mm), RMCF0805FT6K49 (0.65mm). These minor height variations are within standard PCB assembly tolerances and do not affect interchangeability.

Q: Which substitute part has the highest inventory availability?

A: RC0805FR-076K49L (YAGEO) has the highest inventory with 99,104 units in stock. RMCF0805FT6K49 (Stackpole Electronics) has 53,419 units. ERJ-6ENF6491V (Panasonic) has 29,835 units. CRCW08056K49FKEA (Vishay Dale) has 16,078 units. AC0805FR-076K49L (YAGEO) has 15,651 units. RCS08056K49FKEA (Vishay Dale) has 7,970 units. CRCW08056K49FKEAHP (Vishay Dale) has 5,806 units.