RCS2012F510CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F510CS is a 51 Ohm ±1% 1/8W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is classified as Active product status with anti-sulfur and moisture-resistant construction. The part is supplied in Tape & Reel packaging with 771 pieces currently in stock inventory.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design requirements necessitate alternative sourcing from qualified manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

RCS2012F510CS

Samsung Electro-MechanicsIn Stock: 872RCS2012F510CS Datasheet

Current PartRFQ

AC0805FR-0751RL

YAGEOIn Stock: 7250AC0805FR-0751RL Datasheet

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CRCW080551R0FKEA

Vishay DaleIn Stock: 53444CRCW080551R0FKEA Datasheet

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CRCW080551R0FKEAHP

Vishay DaleIn Stock: 53472CRCW080551R0FKEAHP Datasheet

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ERJ-6ENF51R0V

Panasonic Electronic ComponentsIn Stock: 87101ERJ-6ENF51R0V Datasheet

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KTR10EZPF51R0

Rohm SemiconductorIn Stock: 3617KTR10EZPF51R0 Datasheet

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RC0805FR-0751RL

YAGEOIn Stock: 1147880RC0805FR-0751RL Datasheet

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RCS080551R0FKEA

Vishay DaleIn Stock: 3087RCS080551R0FKEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F510CS is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Resistance value: 51 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Secondary Consideration:

• Power Rating: Parts rated at 0.125W (1/8W) are direct equivalents. Parts rated at 0.5W (1/2W) are functional substitutes with enhanced power handling capability but identical electrical characteristics at rated load.

All substitute parts listed maintain identical electrical performance within the specified tolerance and temperature operating window. Physical dimensions remain consistent across all qualified substitutes within the 0805 package specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (0.125W Power Rating):

The following parts are direct electrical and mechanical equivalents to the RCS2012F510CS:

• AC0805FR-0751RL (YAGEO): Maintains identical electrical specifications with Automotive AEC-Q200 qualification. Suitable for applications requiring automotive-grade reliability.

• CRCW080551R0FKEA (Vishay Dale): Provides equivalent performance with Automotive AEC-Q200 certification and established supply availability (53,400 units in stock).

• ERJ-6ENF51R0V (Panasonic Electronic Components): Delivers equivalent electrical characteristics with Automotive AEC-Q200 rating and highest inventory availability (86,997 units in stock).

• KTR10EZPF51R0 (Rohm Semiconductor): Offers equivalent specifications with Automotive AEC-Q200 qualification and high voltage capability.

• RC0805FR-0751RL (YAGEO): Provides equivalent performance with extensive inventory availability (1,147,830 units in stock) and moisture-resistant construction.

Enhanced Power Rating Alternatives (0.5W Power Rating):

The following parts maintain identical electrical specifications while providing increased power dissipation capability:

• CRCW080551R0FKEAHP (Vishay Dale): 0.5W rated variant with pulse withstanding capability and Automotive AEC-Q200 qualification.

• RCS080551R0FKEA (Vishay Dale): 0.5W rated variant with pulse withstanding capability and Automotive AEC-Q200 qualification.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical operating temperature range (-55°C ~ 155°C). Selection among equivalents should prioritize inventory availability and supply chain reliability for the specific application requirement.

Frequently Asked Questions (FAQ)

Q: Can I use a 0.5W rated resistor as a substitute for the 0.125W RCS2012F510CS?

A: Yes. The CRCW080551R0FKEAHP and RCS080551R0FKEA are functional substitutes with identical electrical characteristics (51 Ohms ±1%, ±100ppm/°C, -55°C ~ 155°C operating range). The higher power rating provides additional thermal margin and pulse withstanding capability without affecting circuit performance at the original design power level.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All listed substitute parts use the 0805 (2012 Metric) package specification with identical land pattern requirements. Physical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) are standardized across all qualified substitutes. Height variations (0.020" to 0.028" seated height) remain within standard PCB assembly tolerances.

Q: What is the difference between automotive-rated and non-automotive-rated substitutes?

A: Automotive AEC-Q200 qualified parts (AC0805FR-0751RL, CRCW080551R0FKEA, ERJ-6ENF51R0V, KTR10EZPF51R0, RCS080551R0FKEA, CRCW080551R0FKEAHP) undergo additional qualification testing for automotive applications. Non-automotive variants (RC0805FR-0751RL) maintain identical electrical specifications without automotive certification. Selection depends on application requirements and end-use environment.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status identical to the RCS2012F510CS.

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

A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without moisture bake requirements prior to soldering. All listed parts carry MSL Level 1 rating, eliminating moisture management concerns during storage and assembly.

Q: Can I mix different manufacturers' parts in the same production run?

A: Yes. All substitute parts meet identical electrical and mechanical specifications. However, manufacturing process variations may result in minor differences in physical appearance or height within tolerance ranges. Verify assembly equipment compatibility if automated placement is used.

Q: Which substitute offers the best inventory availability?

A: RC0805FR-0751RL (YAGEO) provides the highest inventory availability with 1,147,830 units in stock, followed by ERJ-6ENF51R0V (Panasonic) with 86,997 units.