RCS2012F5112CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012F5112CS is a 51.1 kOhms ±1% 0.125W (1/8W) thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with anti-sulfur and moisture-resistant properties. The part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination count, operating temperature range). Alternative components from qualified manufacturers provide equivalent functional performance for circuit applications requiring this resistance value and power dissipation capability.

Substiute Parts

RCS2012F5112CS

Samsung Electro-MechanicsIn Stock: 1042RCS2012F5112CS Datasheet

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CRCW080551K1FKEA

Vishay DaleIn Stock: 21022CRCW080551K1FKEA Datasheet

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CRCW080551K1FKEAHP

Vishay DaleIn Stock: 5787CRCW080551K1FKEAHP Datasheet

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CRCW080551K1FKTA

Vishay DaleIn Stock: 3802CRCW080551K1FKTA Datasheet

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ERJ-6ENF5112V

Panasonic Electronic ComponentsIn Stock: 85669ERJ-6ENF5112V Datasheet

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RC0805FR-0751K1L

YAGEOIn Stock: 43606RC0805FR-0751K1L Datasheet

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RCS080551K1FKEA

Vishay DaleIn Stock: 6001RCS080551K1FKEA Datasheet

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RMCF0805FT51K1

Stackpole Electronics IncIn Stock: 110358RMCF0805FT51K1 Datasheet

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RMCS0805FT51K1

Stackpole Electronics IncIn Stock: 1096RMCS0805FT51K1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

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

Mandatory Matching Parameters:

• Resistance value: 51.1 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Number of Terminations: 2
• Operating Temperature Range: -55°C ~ 155°C
• Temperature Coefficient: ±100ppm/°C
• Composition: Thick Film

Power Rating Consideration: The main part RCS2012F5112CS operates at 0.125W (1/8W). Substitute parts with equal or higher power ratings (0.125W or 0.5W) are functionally equivalent. Parts with lower power ratings are not suitable.

Compliance and Features: Substitute parts maintain ROHS3 compliance and MSL 1 rating. Additional features such as automotive AEC-Q200 certification, anti-sulfur properties, or pulse withstanding capability do not disqualify a part from substitution but represent enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Full Equivalence):

CRCW080551K1FKEA, ERJ-6ENF5112V, RC0805FR-0751K1L, RMCF0805FT51K1, and RMCS0805FT51K1 are direct functional equivalents to RCS2012F5112CS. All maintain identical electrical specifications (51.1 kΩ ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C operating range) and mechanical compatibility (0805 package, 2 terminations). All substitute parts are ROHS3 compliant with MSL 1 rating.

Higher Power Rating Alternatives:

CRCW080551K1FKEAHP and RCS080551K1FKEA provide 0.5W (1/2W) power rating with identical resistance, tolerance, and package specifications. These parts are suitable for applications requiring enhanced thermal performance or pulse withstanding capability while maintaining the same footprint and electrical characteristics.

Compliance Consideration:

CRCW080551K1FKTA is RoHS non-compliant and REACH affected. This part is not recommended for new designs or applications requiring regulatory compliance with current environmental standards.

Inventory and Availability:

Selection among equivalent parts may be based on inventory availability and lead time requirements. RMCF0805FT51K1 (110,293 pcs), ERJ-6ENF5112V (85,577 pcs), and RC0805FR-0751K1L (43,499 pcs) demonstrate highest stock levels.

Frequently Asked Questions (FAQ)

Q: Can CRCW080551K1FKEAHP (0.5W) be used in place of RCS2012F5112CS (0.125W)?

A: Yes. The 0.5W part is functionally equivalent and provides superior thermal performance. Higher power rating does not create incompatibility; it represents enhanced capability. The component will operate within specified parameters in circuits designed for 0.125W dissipation.

Q: What is the significance of automotive AEC-Q200 certification on substitute parts?

A: AEC-Q200 certification indicates the part meets automotive industry reliability and quality standards. This certification is an additional qualification that does not affect basic electrical or mechanical compatibility. Parts with AEC-Q200 are suitable for both automotive and general industrial applications.

Q: Are anti-sulfur and moisture-resistant features required for substitution?

A: No. These features represent enhanced environmental protection but are not mandatory for functional equivalence. Parts with or without these features are electrically and mechanically compatible. Selection depends on application environment requirements.

Q: Why is CRCW080551K1FKTA not recommended despite matching specifications?

A: CRCW080551K1FKTA is RoHS non-compliant and REACH affected. Current regulatory requirements and industry standards mandate ROHS3 compliance for new component selection. This part is not suitable for applications subject to environmental compliance requirements.

Q: Can substitute parts be mixed in the same circuit board assembly?

A: Yes. All listed substitute parts meet identical electrical specifications and operate within the same temperature range. Mixed sourcing is permissible from a functional standpoint. PCB layout and thermal management considerations remain unchanged.

Q: What is the impact of different height specifications (0.50mm to 0.70mm) on substitution?

A: Height variation within the 0805 package specification does not affect electrical performance or standard PCB assembly processes. All listed parts conform to 0805 (2012 Metric) package standard. Height differences are within normal manufacturing tolerance and do not create compatibility issues.

Q: Is temperature coefficient matching critical for substitution?

A: Yes. All listed substitute parts maintain ±100ppm/°C temperature coefficient identical to RCS2012F5112CS. This parameter is mandatory for substitution eligibility and ensures consistent circuit performance across the -55°C ~ 155°C operating range.