RCS2012J431CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012J431CS is a 430 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format with 0.125W power rating. This component is classified as Active product status with anti-sulfur and moisture-resistant construction. The part is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when applications require alternative sourcing due to inventory constraints, supply chain considerations, or when design specifications permit tolerance or feature variations within the same electrical and mechanical parameters.

Substiute Parts

RCS2012J431CS

Samsung Electro-MechanicsIn Stock: 782RCS2012J431CS Datasheet

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AC0805FR-07430RL

YAGEOIn Stock: 4075AC0805FR-07430RL Datasheet

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CRCW0805430RFKEA

Vishay DaleIn Stock: 10443CRCW0805430RFKEA Datasheet

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ERJ-6ENF4300V

Panasonic Electronic ComponentsIn Stock: 104859ERJ-6ENF4300V Datasheet

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ESR10EZPF4300

Rohm SemiconductorIn Stock: 27540ESR10EZPF4300 Datasheet

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RC0805FR-07430RL

YAGEOIn Stock: 28260RC0805FR-07430RL Datasheet

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RC0805JR-07430RL

YAGEOIn Stock: 42626RC0805JR-07430RL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RCS2012J431CS is based on the following allowed parameters:

Primary Substitution Criteria:

• Resistance value: 430 Ohms (exact match required)
• Package format: 0805 (2012 Metric) (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Composition: Thick Film (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• MSL rating: Level 1 (Unlimited) (exact match required)

Secondary Variation Parameters:

• Tolerance: ±5% (main part) to ±1% (substitute parts) — tighter tolerance is acceptable
• Power rating: 0.125W (main part) to 0.4W (ESR10EZPF4300 only) — higher power rating is acceptable
• Features: Anti-sulfur, Moisture Resistant (main part) to Automotive AEC-Q200, Moisture Resistant (substitute parts) — additional certifications are acceptable
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® — both acceptable for component selection

Substitute parts are grouped into two categories: Direct Equivalents (matching tolerance ±5%) and Enhanced Substitutes (tighter tolerance ±1% or higher power rating).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Matching Tolerance ±5%):

RC0805JR-07430RL (YAGEO) is the direct equivalent to RCS2012J431CS. Both parts share identical electrical specifications: 430 Ohms ±5% tolerance, 0.125W power rating, 0805 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both are ROHS3 compliant with MSL Level 1 rating. This part is suitable for direct substitution in applications where the original Samsung part is unavailable.

Enhanced Substitutes (Tighter Tolerance ±1%):

RC0805FR-07430RL, AC0805FR-07430RL, CRCW0805430RFKEA, and ERJ-6ENF4300V all provide ±1% tolerance, which is tighter than the original ±5% specification. These parts maintain all other electrical and mechanical parameters. AC0805FR-07430RL, CRCW0805430RFKEA, and ERJ-6ENF4300V carry Automotive AEC-Q200 certification, providing additional qualification for automotive applications. These substitutes are suitable when design specifications can accommodate improved tolerance performance.

Enhanced Substitute (Higher Power Rating):

ESR10EZPF4300 (Rohm Semiconductor) provides 0.4W power rating compared to the original 0.125W, with ±1% tolerance and Automotive AEC-Q200 certification including pulse withstanding capability. This part is suitable for applications requiring higher power dissipation margin or pulse handling performance while maintaining the 430 Ohm resistance value and 0805 package format.

All substitute parts are Active product status with ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-07430RL replace RCS2012J431CS in any application?

A: RC0805JR-07430RL is a direct equivalent with matching tolerance (±5%), power rating (0.125W), and all electrical parameters. It is suitable for direct substitution in applications where the original Samsung part is unavailable. Both parts meet identical specifications for resistance, package, temperature range, and compliance requirements.

Q: What is the difference between the ±5% tolerance parts and ±1% tolerance parts?

A: The main part RCS2012J431CS and RC0805JR-07430RL both carry ±5% tolerance, meaning the actual resistance value can vary within ±5% of the nominal 430 Ohm specification. The substitute parts RC0805FR-07430RL, AC0805FR-07430RL, CRCW0805430RFKEA, and ERJ-6ENF4300V carry ±1% tolerance, providing tighter resistance accuracy. Tighter tolerance parts are acceptable substitutes for applications originally designed for ±5% tolerance.

Q: Are the Automotive AEC-Q200 certified parts suitable for non-automotive applications?

A: Yes. Automotive AEC-Q200 certification indicates the parts meet stringent automotive qualification standards. Parts with this certification are suitable for any application, including non-automotive use. The certification represents additional qualification and reliability assurance.

Q: Can ESR10EZPF4300 be used as a substitute despite its higher 0.4W power rating?

A: Yes. ESR10EZPF4300 provides 0.4W power rating compared to the original 0.125W specification. Higher power rating is acceptable in substitution because it provides greater power dissipation capability. The part maintains the same 430 Ohm resistance, 0805 package, and all other electrical parameters. This substitute is suitable when applications require improved thermal margin or pulse handling performance.

Q: What is the significance of MSL Level 1 (Unlimited) rating?

A: MSL Level 1 (Unlimited) indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All parts in this comparison carry MSL Level 1 rating, ensuring consistent moisture sensitivity performance across all substitutes.

Q: Are there packaging differences between the main part and substitutes?

A: The main part RCS2012J431CS is supplied in Tape & Reel (TR) format. Most substitutes are also supplied in Tape & Reel (TR) format. AC0805FR-07430RL is available in Cut Tape (CT) & Digi-Reel® format. Both packaging formats are standard for component procurement and do not affect electrical or mechanical compatibility. Selection between packaging formats depends on assembly process requirements.

Q: Do all substitute parts maintain the same physical dimensions?

A: All parts share the same 0805 (2012 Metric) package format with identical length (0.079" / 2.00mm) and width (0.049" / 1.25mm). Height-seated measurements vary slightly between manufacturers (0.020" to 0.028"), but these variations are within standard 0805 package tolerances and do not affect PCB layout or assembly compatibility.