RC2012F512CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F512CS is a 5.1 kOhm ±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 moisture-resistant characteristics and operates across the temperature range of -55°C to 155°C. The part is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package type, dimensions, termination count). Substitute parts enable design flexibility, support supply chain continuity, and provide options for specific application requirements such as automotive qualification or enhanced pulse withstanding capabilities.

Key Parameters

Parameter	Value
Resistance	5.1 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Package / Case	0805 (2012 Metric)
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RC2012F512CS are classified into two categories based on substitution compatibility:

Direct Substitutes maintain identical electrical and mechanical specifications:

Resistance: 5.1 kOhms
Tolerance: ±1%
Power Rating: 0.125W (1/8W)
Temperature Coefficient: ±100ppm/°C
Operating Temperature: -55°C to 155°C
Package: 0805 (2012 Metric)
Composition: Thick Film
RoHS3 Compliance: Yes
MSL Level: 1 (Unlimited)

Similar Parts share core electrical specifications but include enhanced features (automotive AEC-Q200 qualification, pulse withstanding capability) or differ in power rating. These parts are electrically compatible but may have different packaging formats (Tape & Reel vs. Cut Tape) or additional performance characteristics.

The substitution logic is based strictly on matching the allowed electrical parameters (resistance, tolerance, power, temperature coefficient, operating temperature) and mechanical parameters (package type, dimensions, termination count, RoHS/MSL compliance).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp (°C)	Package	Height Max (mm)	Packaging Format	Features	RoHS3	MSL
RC2012F512CS	Samsung Electro-Mechanics	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.65	Tape & Reel	Moisture Resistant	Yes	1
CR0805-FX-5101ELF	Bourns Inc.	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.60	Cut Tape & Digi-Reel	Moisture Resistant	Yes	1
CRG0805F5K1	TE Connectivity Passive Product	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.65	Tape & Reel	—	Yes	1
ERJ-6ENF5101V	Panasonic Electronic Components	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.70	Tape & Reel	Automotive AEC-Q200	Yes	1
KTR10EZPF5101	Rohm Semiconductor	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.65	Tape & Reel	Automotive AEC-Q200, High Voltage	Yes	1
RC0805FR-075K1L	YAGEO	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.60	Cut Tape & Digi-Reel	Moisture Resistant	Yes	1
RMCF0805FT5K10	Stackpole Electronics Inc	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.65	Tape & Reel	Automotive AEC-Q200	Yes	1
AC0805FR-075K1L	YAGEO	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.60	Cut Tape & Digi-Reel	Automotive AEC-Q200, Moisture Resistant	Yes	1
CRCW08055K10FKEA	Vishay Dale	5.1 kΩ	±1%	0.125	±100	-55 to 155	0805	0.50	Cut Tape & Digi-Reel	Automotive AEC-Q200	Yes	1
CRCW08055K10FKEAHP	Vishay Dale	5.1 kΩ	±1%	0.5	±100	-55 to 155	0805	0.50	Tape & Reel	Automotive AEC-Q200, Pulse Withstanding	Yes	1
ESR10EZPF5101	Rohm Semiconductor	5.1 kΩ	±1%	0.4	±100	-55 to 155	0805	0.65	Tape & Reel	Automotive AEC-Q200, Pulse Withstanding	Yes	1

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

CR0805-FX-5101ELF (Bourns Inc.), CRG0805F5K1 (TE Connectivity), RC0805FR-075K1L (YAGEO), and RMCF0805FT5K10 (Stackpole Electronics) are direct electrical and mechanical equivalents to the RC2012F512CS. All maintain 5.1 kOhm ±1% resistance, 0.125W power rating, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating temperature range. Selection among these parts depends on packaging format preference (Tape & Reel vs. Cut Tape & Digi-Reel) and inventory availability.

For Automotive Applications:

ERJ-6ENF5101V (Panasonic), KTR10EZPF5101 (Rohm), RMCF0805FT5K10 (Stackpole), AC0805FR-075K1L (YAGEO), and CRCW08055K10FKEA (Vishay Dale) carry AEC-Q200 automotive qualification. These parts are suitable for automotive-grade circuit designs while maintaining electrical compatibility with the main part.

For Enhanced Power Handling:

CRCW08055K10FKEAHP (Vishay Dale, 0.5W) and ESR10EZPF5101 (Rohm, 0.4W) provide higher power ratings than the standard 0.125W specification. These parts are electrically compatible but feature increased power dissipation capability and pulse withstanding characteristics. Selection of these parts is appropriate when circuit design requires higher power margins or pulse immunity.

Compliance Considerations:

All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory requirements of the RC2012F512CS.

Frequently Asked Questions (FAQ)

Q: Can I substitute CR0805-FX-5101ELF for RC2012F512CS in my design?

A: Yes. CR0805-FX-5101ELF is a direct electrical and mechanical equivalent. Both parts share identical resistance (5.1 kOhm), tolerance (±1%), power rating (0.125W), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), package type (0805), and compliance ratings (ROHS3, MSL 1). The primary difference is packaging format: CR0805-FX-5101ELF is supplied in Cut Tape & Digi-Reel format, while RC2012F512CS is supplied in Tape & Reel format.

Q: What is the difference between direct substitutes and similar parts?

A: Direct substitutes maintain identical electrical specifications (resistance, tolerance, power rating, temperature coefficient, operating temperature) and mechanical compatibility (package, dimensions, terminations). Similar parts share the core electrical specifications but include additional features such as automotive AEC-Q200 qualification or higher power ratings (0.4W or 0.5W instead of 0.125W). Similar parts are electrically compatible but may have different performance characteristics or certifications.

Q: Can I use CRCW08055K10FKEAHP (0.5W) in place of RC2012F512CS (0.125W)?

A: CRCW08055K10FKEAHP is electrically compatible with RC2012F512CS in terms of resistance value, tolerance, temperature coefficient, and operating temperature range. However, CRCW08055K10FKEAHP has a higher power rating (0.5W vs. 0.125W). This substitution is valid from an electrical standpoint and provides additional power dissipation margin. The physical package dimensions remain identical (0805), so PCB layout compatibility is maintained.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance of the RC2012F512CS.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this rating (ERJ-6ENF5101V, KTR10EZPF5101, RMCF0805FT5K10, AC0805FR-075K1L, CRCW08055K10FKEA, CRCW08055K10FKEAHP, ESR10EZPF5101) have undergone additional testing and validation for automotive applications. These parts are suitable for use in automotive circuit designs where such qualification is required.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Tape & Reel and Cut Tape & Digi-Reel formats contain identical components with identical electrical specifications. Selection between packaging formats depends on manufacturing equipment compatibility and inventory management requirements.

Q: Can I mix different substitute parts in the same design?

A: Yes. All listed substitute parts are electrically compatible with RC2012F512CS and with each other (when power ratings are equal or higher). Mixing different manufacturers' parts in the same design is acceptable from an electrical standpoint. However, design documentation should clearly identify which part numbers are used in specific circuit locations for traceability and future maintenance purposes.

Q: What is the significance of height differences among substitute parts?

A: Height variations (ranging from 0.50mm to 0.70mm maximum seated height) are within normal manufacturing tolerances for 0805 package components. These differences do not affect electrical performance or standard PCB assembly processes. Height differences become relevant only in space-constrained applications where component clearance is critical.

Q: Are moisture-resistant variants (RC2012F512CS, CR0805-FX-5101ELF, RC0805FR-075K1L, AC0805FR-075K1L) required for all applications?

A: Moisture-resistant variants provide enhanced protection in high-humidity or condensation-prone environments. All parts listed carry MSL Level 1 (Unlimited) rating, indicating they do not require special moisture control during storage and handling. Selection of moisture-resistant variants depends on specific application environmental conditions rather than being a mandatory requirement.

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