RC2012J4R3CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012J4R3CS is a 4.3 Ohm ±5% 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 full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The part is supplied in Tape & Reel packaging suitable for automated assembly processes. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit applications.

Substiute Parts

RC2012J4R3CS

Samsung Electro-MechanicsIn Stock: 1103RC2012J4R3CS Datasheet

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RC0805JR-074R3L

YAGEOIn Stock: 12930RC0805JR-074R3L Datasheet

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RMCF0805FT4R30

Stackpole Electronics IncIn Stock: 8533RMCF0805FT4R30 Datasheet

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RMCF0805JT4R30

Stackpole Electronics IncIn Stock: 7904RMCF0805JT4R30 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012J4R3CS is determined by the following critical parameters: resistance value (4.3 Ohms), package format (0805 / 2012 Metric), power rating (0.125W minimum), composition (thick film), operating temperature range (-55°C to 155°C minimum), and compliance certifications (RoHS3, MSL 1). Tolerance variations (±5% or tighter) are acceptable as they represent improved or equivalent performance. All identified substitute parts maintain these core electrical and mechanical specifications, ensuring functional compatibility in the original circuit application without design modification.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (RC0805JR-074R3L, RMCF0805FT4R30, RMCF0805JT4R30) are functionally equivalent to the RC2012J4R3CS based on matching electrical specifications and mechanical dimensions. Selection between these options depends on application-specific requirements:

RC0805JR-074R3L (YAGEO): Direct equivalent with identical tolerance (±5%) and standard thick film composition. Suitable for general-purpose applications requiring standard industrial-grade resistors. Packaging in Cut Tape and Digi-Reel format accommodates both manual and automated assembly workflows.

RMCF0805FT4R30 (Stackpole): Offers improved tolerance specification (±1%) with automotive AEC-Q200 qualification. Recommended for applications requiring higher precision and automotive-grade reliability. Tape & Reel packaging supports high-volume automated assembly.

RMCF0805JT4R30 (Stackpole): Maintains ±5% tolerance matching the original specification while providing automotive AEC-Q200 qualification. Suitable for applications requiring automotive-grade components without tolerance upgrade. Tape & Reel packaging standard.

All parts maintain RoHS3 compliance, MSL 1 rating, and identical operating temperature range (-55°C to 155°C). Temperature coefficient variations (±200ppm/°C for Stackpole and YAGEO versus ±300ppm/°C for Samsung) represent improved thermal stability in substitute options.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-074R3L replace RC2012J4R3CS in existing designs?

A: Yes. Both parts share identical resistance value (4.3 Ohms), tolerance (±5%), power rating (0.125W), package format (0805 / 2012 Metric), and operating temperature range (-55°C to 155°C). Physical dimensions and termination count are equivalent. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and slightly improved temperature coefficient (±200ppm/°C versus ±300ppm/°C).

Q: What is the difference between RMCF0805FT4R30 and RMCF0805JT4R30?

A: Both Stackpole parts are automotive AEC-Q200 qualified with identical package, dimensions, and operating temperature range. The primary distinction is tolerance: RMCF0805FT4R30 specifies ±1% tolerance, while RMCF0805JT4R30 specifies ±5% tolerance matching the original RC2012J4R3CS. Selection depends on circuit precision requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RC0805JR-074R3L, RMCF0805FT4R30, and RMCF0805JT4R30 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original RC2012J4R3CS specification.

Q: Does package format affect circuit performance?

A: Package format (Tape & Reel, Cut Tape, or Digi-Reel) affects assembly process compatibility and supply chain logistics but does not alter electrical performance. All substitute parts maintain identical electrical specifications and mechanical dimensions suitable for 0805 footprints.

Q: Can RMCF0805FT4R30 be used in non-automotive applications?

A: Yes. Automotive AEC-Q200 qualification represents enhanced reliability and quality standards. Components meeting automotive specifications are suitable for general industrial and consumer applications without performance degradation.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient (±300ppm/°C for Samsung versus ±200ppm/°C for YAGEO and Stackpole) indicates resistance value drift across the operating temperature range. Lower values represent improved thermal stability. For most applications within the -55°C to 155°C range, both specifications are functionally acceptable.