RC2012J5R1CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012J5R1CS is a 5.1 Ohms ±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 RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is designed for general-purpose applications requiring moisture-resistant thick film construction across industrial temperature ranges from -55°C to 155°C. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

RC2012J5R1CS

Samsung Electro-MechanicsIn Stock: 971RC2012J5R1CS Datasheet

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KTR10EZPF5R10

Rohm SemiconductorIn Stock: 12314KTR10EZPF5R10 Datasheet

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RC0805JR-075R1L

YAGEOIn Stock: 149133RC0805JR-075R1L Datasheet

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RMCF0805FT5R10

Stackpole Electronics IncIn Stock: 75655RMCF0805FT5R10 Datasheet

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RMCF0805JT5R10

Stackpole Electronics IncIn Stock: 28188RMCF0805JT5R10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC2012J5R1CS are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts maintain the following mandatory parameters: 5.1 Ohms resistance value, 0.125W power rating, 0805 (2012 Metric) package format, thick film composition, -55°C to 155°C operating temperature range, RoHS3 compliance, and MSL 1 moisture sensitivity level.

Substitutes are differentiated by two primary parameters:

Tolerance Classification: The main part specifies ±5% tolerance. Substitute parts are available in both ±5% tolerance (direct equivalents) and ±1% tolerance (higher precision alternatives). Parts with ±1% tolerance are electrically compatible as they represent tighter accuracy specifications within the same resistance value.

Automotive Qualification: Some substitute parts carry AEC-Q200 automotive qualification and high-voltage features, which represent enhanced reliability certifications beyond the base specification. These parts are compatible for applications requiring automotive-grade components.

Temperature coefficient variations (±100ppm/°C to ±300ppm/°C) and dimensional tolerances (height seated maximum ranging from 0.024" to 0.026") fall within acceptable substitution parameters for 0805 package form factors.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection: RC0805JR-075R1L (YAGEO) and RMCF0805JT5R10 (Stackpole) are direct electrical equivalents to the RC2012J5R1CS, maintaining identical ±5% tolerance and general-purpose thick film specifications. Both parts are RoHS3 compliant with MSL 1 rating and active product status. YAGEO RC0805JR-075R1L offers the highest inventory availability (149,027 pcs) and represents the most readily accessible alternative. Stackpole RMCF0805JT5R10 provides automotive AEC-Q200 qualification for applications requiring enhanced reliability standards.

Higher Precision Alternatives: KTR10EZPF5R10 (Rohm) and RMCF0805FT5R10 (Stackpole) both specify ±1% tolerance, providing tighter resistance accuracy compared to the ±5% main part specification. These parts are suitable for applications where improved tolerance performance is required. Both carry AEC-Q200 automotive qualification. KTR10EZPF5R10 features superior temperature coefficient performance (±100ppm/°C) compared to the main part (±300ppm/°C), resulting in better temperature stability. RMCF0805FT5R10 maintains ±200ppm/°C temperature coefficient.

Compliance and Certification: All substitute parts maintain full RoHS3 compliance, MSL 1 unlimited moisture sensitivity rating, and active product status. Automotive-qualified parts (KTR10EZPF5R10, RMCF0805FT5R10, RMCF0805JT5R10) are suitable for automotive and high-reliability applications. Non-automotive parts (RC0805JR-075R1L) are appropriate for general industrial and consumer applications.

Inventory Considerations: YAGEO RC0805JR-075R1L demonstrates the highest stock availability (149,027 pcs), followed by Stackpole RMCF0805FT5R10 (75,587 pcs) and RMCF0805JT5R10 (28,177 pcs). Rohm KTR10EZPF5R10 maintains 12,278 pcs in stock.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC2012J5R1CS with a ±1% tolerance part?

A: Yes. Parts with ±1% tolerance (KTR10EZPF5R10 and RMCF0805FT5R10) are electrically compatible substitutes. The ±1% specification represents tighter accuracy than the original ±5% specification and will function correctly in circuits designed for ±5% tolerance components. No circuit redesign is required.

Q: What is the difference between automotive-qualified and non-automotive substitute parts?

A: Automotive-qualified parts (KTR10EZPF5R10, RMCF0805FT5R10, RMCF0805JT5R10) carry AEC-Q200 certification, indicating compliance with automotive industry reliability and quality standards. Non-automotive parts (RC0805JR-075R1L) meet general industrial specifications. Automotive-qualified parts are suitable for both automotive and general applications; non-automotive parts are suitable for general applications only.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All substitute parts listed are supplied in Tape & Reel (TR) packaging format, matching the original RC2012J5R1CS packaging specification.

Q: Do substitute parts have the same physical dimensions?

A: All substitute parts use the 0805 (2012 Metric) package format with identical length (0.079" / 2.00mm) and width (0.049" / 1.25mm). Height seated maximum varies slightly: RC0805JR-075R1L is 0.024" (0.60mm), while other parts are 0.026" (0.65mm). These dimensional variations are within standard 0805 package tolerances and do not affect PCB assembly compatibility.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient indicates resistance value drift across the operating temperature range. The main part specifies ±300ppm/°C, while substitutes range from ±100ppm/°C to ±200ppm/°C. Lower temperature coefficients indicate better resistance stability across temperature variations. KTR10EZPF5R10 offers the best temperature stability (±100ppm/°C). For applications with strict temperature stability requirements, lower temperature coefficient parts are preferred.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts, including the main part RC2012J5R1CS and all substitute parts, are RoHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity rating.

Q: Can I use these parts interchangeably on the same PCB assembly?

A: Yes. All substitute parts are mechanically and electrically compatible with the RC2012J5R1CS. They share identical 0805 package format, 5.1 Ohms resistance value, 0.125W power rating, and -55°C to 155°C operating temperature range. PCB footprints and assembly processes require no modification.