RC2012J431CS 430 Ohm 0805 SMD Resistor Equivalent & Substitute Parts

Part Overview

The RC2012J431CS is a 430 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is rated for 0.125W (1/8W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently Active in product status with 946 units in stock inventory.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand enhanced specifications such as tighter tolerance or automotive qualification, or when supply chain optimization requires alternative sourcing from qualified manufacturers.

Substiute Parts

RC2012J431CS

Samsung Electro-MechanicsIn Stock: 1029RC2012J431CS Datasheet

Current PartRFQ

RC0805JR-07430RL

YAGEOIn Stock: 42626RC0805JR-07430RL Datasheet

DirectRFQ

AC0805FR-07430RL

YAGEOIn Stock: 4075AC0805FR-07430RL Datasheet

UpgradeRFQ

CRG0805F430R

TE Connectivity Passive ProductIn Stock: 1207CRG0805F430R Datasheet

UpgradeRFQ

ERJ-6ENF4300V

Panasonic Electronic ComponentsIn Stock: 104859ERJ-6ENF4300V Datasheet

UpgradeRFQ

KTR10EZPF4300

Rohm SemiconductorIn Stock: 7112KTR10EZPF4300 Datasheet

UpgradeRFQ

MCR10ERTF4300

Rohm SemiconductorIn Stock: 1281MCR10ERTF4300 Datasheet

UpgradeRFQ

RC0805FR-07430RL

YAGEOIn Stock: 28260RC0805FR-07430RL Datasheet

UpgradeRFQ

RMCF0805FT430R

Stackpole Electronics IncIn Stock: 12038RMCF0805FT430R Datasheet

UpgradeRFQ

CRCW0805430RFKEA

Vishay DaleIn Stock: 10443CRCW0805430RFKEA Datasheet

SimilarRFQ

ESR10EZPF4300

Rohm SemiconductorIn Stock: 27540ESR10EZPF4300 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC2012J431CS is based on the following criteria:

Direct Substitutes (Equivalent Specifications): Parts that maintain identical resistance value (430 Ohms), tolerance (±5%), power rating (0.125W), package (0805), and operating temperature range (-55°C to 155°C). These parts are electrically and mechanically interchangeable without design modification.

Upgrade Substitutes (Enhanced Specifications): Parts that maintain the core electrical parameters (430 Ohms, 0.125W, 0805 package, -55°C to 155°C) but offer improved tolerance (±1% instead of ±5%), automotive qualification (AEC-Q200), or enhanced features (high voltage capability, pulse withstanding). These parts are backward-compatible and provide superior performance characteristics.

Similar Parts (Modified Specifications): Parts that share the same resistance value and package but differ in power rating or feature set. These require design verification before substitution.

The key parameters determining substitution eligibility are: resistance value, package type, operating temperature range, and power rating. Tolerance and certifications may be upgraded without affecting circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required):

RC0805JR-07430RL from YAGEO provides equivalent specifications to the RC2012J431CS with identical tolerance (±5%), power rating (0.125W), and operating temperature range. This part is suitable for direct substitution in applications where the original Samsung part is unavailable. Both parts maintain moisture-resistant construction and ROHS3 compliance.

For Tolerance Upgrade (±5% to ±1%):

AC0805FR-07430RL, RC0805FR-07430RL, CRG0805F430R, ERJ-6ENF4300V, KTR10EZPF4300, RMCF0805FT430R, and CRCW0805430RFKEA all provide ±1% tolerance while maintaining the 0.125W power rating and 0805 package. These parts are backward-compatible and suitable for applications requiring improved accuracy. All are ROHS3 compliant and operate within the -55°C to 155°C range.

For Automotive Applications:

AC0805FR-07430RL, ERJ-6ENF4300V, KTR10EZPF4300, RMCF0805FT430R, CRCW0805430RFKEA, and ESR10EZPF4300 carry AEC-Q200 automotive qualification. These parts are suitable for automotive-grade circuit designs while maintaining electrical compatibility with the original specification.

For Enhanced Power Handling:

ESR10EZPF4300 from Rohm Semiconductor provides 0.4W power rating (compared to 0.125W of the original) with pulse withstanding capability and AEC-Q200 qualification. This part is suitable for applications requiring higher power dissipation capacity while maintaining the same resistance value and package footprint.

Parts to Avoid:

MCR10ERTF4300 is marked as Discontinued at DiGi Electronics and should not be selected for new designs requiring long-term availability assurance.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC0805JR-07430RL for RC2012J431CS without any circuit modifications?

A: Yes. RC0805JR-07430RL from YAGEO is a direct equivalent with identical resistance (430 Ohms), tolerance (±5%), power rating (0.125W), package (0805), and operating temperature range (-55°C to 155°C). Both parts are moisture-resistant and ROHS3 compliant. No design changes are required.

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

A: The original RC2012J431CS has ±5% tolerance, meaning the actual resistance can vary between 408.5 Ohms and 451.5 Ohms. The ±1% tolerance upgrade parts (such as AC0805FR-07430RL and RC0805FR-07430RL) have actual resistance between 425.7 Ohms and 434.3 Ohms. The ±1% parts provide tighter accuracy and are suitable for precision circuits. All ±1% alternatives are backward-compatible with the original design.

Q: Are all substitute parts available in the same packaging format?

A: The substitute parts are available in either Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® packaging. The physical component dimensions and footprint remain identical (0805 / 2012 Metric). Packaging format affects handling and storage but does not impact electrical or mechanical compatibility on the PCB.

Q: Which substitute part should I choose for automotive applications?

A: For automotive applications, select from parts carrying AEC-Q200 qualification: AC0805FR-07430RL, ERJ-6ENF4300V, KTR10EZPF4300, RMCF0805FT430R, CRCW0805430RFKEA, or ESR10EZPF4300. All maintain the 430 Ohm resistance and 0805 package while meeting automotive-grade reliability standards.

Q: Can I use ESR10EZPF4300 as a substitute if my circuit only requires 0.125W?

A: Yes. ESR10EZPF4300 has a 0.4W power rating, which exceeds the 0.125W requirement of the original design. Higher power rating does not negatively affect circuit operation; the component will simply operate at lower stress levels. This part is suitable for applications where future power requirement increases are anticipated or where enhanced reliability is desired.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All substitute parts listed maintain MSL 1 classification, ensuring compatibility with standard manufacturing processes and storage conditions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, matching the environmental compliance status of the original RC2012J431CS. This ensures compatibility with regulatory requirements across all markets.

Q: What is the temperature coefficient specification and why does it matter?

A: The temperature coefficient of ±100ppm/°C indicates how much the resistance value changes with temperature. All listed parts maintain this specification, ensuring consistent performance across the -55°C to 155°C operating range. This parameter is identical across all alternatives and does not affect substitution decisions.