RC2012F300CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F300CS is a 30 Ohm ±1% 0.125W 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 construction and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination count, operating temperature range). Alternative sources become necessary for supply chain continuity, design flexibility across automotive and industrial applications, and access to specialized variants with enhanced features such as AEC-Q200 automotive qualification or pulse-withstanding capability.

Key Parameters

Parameter	Value	Unit
Resistance	30	Ohms
Tolerance	±1%	-
Power Rating	0.125	W (1/8W)
Package / Case	0805 (2012 Metric)	-
Composition	Thick Film	-
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Terminations	2	-
Moisture Sensitivity Level	1 (Unlimited)	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: resistance value (30 Ohms), tolerance (±1%), package configuration (0805 / 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and termination count (2). Parts are grouped into three categories:

Direct Equivalents (1/8W, 0.125W): Parts matching all electrical and mechanical specifications of the main component, differing only in manufacturer and series designation. These include ERJ-6ENF30R0V (Panasonic), RC0805FR-0730RL (YAGEO), and RMCF0805FT30R0 (Stackpole Electronics Inc).

Similar Parts with Enhanced Features: Parts maintaining core electrical specifications and package compatibility but incorporating additional certifications or performance enhancements. AC0805FR-0730RL (YAGEO) adds AEC-Q200 automotive qualification and moisture resistance. CRCW080530R0FKEA (Vishay Dale) includes AEC-Q200 certification. CRCW080530R0FKEAC (Vishay Dale) provides standard thick film construction without additional features.

Similar Parts with Increased Power Rating: Parts with identical resistance, tolerance, package, and temperature specifications but higher power dissipation capability. CRCW080530R0FKEAHP (Vishay Dale) rated at 0.5W (1/2W) with AEC-Q200 and pulse-withstanding features. ERJ-UP6F30R0V (Panasonic) rated at 0.5W (1/2W) with anti-sulfur, AEC-Q200, and pulse-withstanding features. ESR10EZPF30R0 (Rohm Semiconductor) rated at 0.4W (2/5W) with AEC-Q200 and pulse-withstanding features.

Discontinued Parts: MCR10ERTF30R0 (Rohm Semiconductor) maintains full electrical and mechanical compatibility but is discontinued at DiGi Electronics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance (Ohms)	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Op Temp (°C)	Features	Product Status
RC2012F300CS	Samsung Electro-Mechanics	30	±1%	0.125	0805	±100	-55 to 155	Moisture Resistant	Active
ERJ-6ENF30R0V	Panasonic Electronic Components	30	±1%	0.125	0805	±100	-55 to 155	Automotive AEC-Q200	Active
RC0805FR-0730RL	YAGEO	30	±1%	0.125	0805	±100	-55 to 155	Moisture Resistant	Active
RMCF0805FT30R0	Stackpole Electronics Inc	30	±1%	0.125	0805	±100	-55 to 155	Automotive AEC-Q200	Active
AC0805FR-0730RL	YAGEO	30	±1%	0.125	0805	±100	-55 to 155	Automotive AEC-Q200, Moisture Resistant	Active
CRCW080530R0FKEA	Vishay Dale	30	±1%	0.125	0805	±100	-55 to 155	Automotive AEC-Q200	Active
CRCW080530R0FKEAC	Vishay Dale	30	±1%	0.125	0805	±100	-55 to 155	-	Active
CRCW080530R0FKEAHP	Vishay Dale	30	±1%	0.5	0805	±100	-55 to 155	Automotive AEC-Q200, Pulse Withstanding	Active
ERJ-UP6F30R0V	Panasonic Electronic Components	30	±1%	0.5	0805	±100	-55 to 155	Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding	Active
ESR10EZPF30R0	Rohm Semiconductor	30	±1%	0.4	0805	±100	-55 to 155	Automotive AEC-Q200, Pulse Withstanding	Active
MCR10ERTF30R0	Rohm Semiconductor	30	±1%	0.125	0805	±100	-55 to 155	-	Discontinued at DiGi Electronics

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): ERJ-6ENF30R0V, RC0805FR-0730RL, RMCF0805FT30R0, and CRCW080530R0FKEAC provide electrical and mechanical equivalence to RC2012F300CS. Selection among these options depends on packaging preference (Tape & Reel versus Cut Tape & Digi-Reel) and availability. All maintain ROHS3 compliance and MSL 1 rating.

For Automotive Applications: AC0805FR-0730RL, CRCW080530R0FKEA, RMCF0805FT30R0, and ERJ-6ENF30R0V incorporate AEC-Q200 automotive qualification while maintaining 0.125W power rating and 0805 package compatibility. These parts satisfy automotive-grade reliability requirements without modifying circuit design parameters.

For Enhanced Thermal Performance: CRCW080530R0FKEAHP (0.5W), ERJ-UP6F30R0V (0.5W with anti-sulfur), and ESR10EZPF30R0 (0.4W) provide increased power dissipation capability within the same 0805 package footprint. These parts are suitable for applications requiring thermal margin or pulse current handling. All three include AEC-Q200 certification and pulse-withstanding features.

For Supply Chain Continuity: Multiple active manufacturers (Samsung Electro-Mechanics, Panasonic, YAGEO, Stackpole Electronics Inc, Vishay Dale, Rohm Semiconductor) provide redundancy. Inventory levels vary significantly; RC0805FR-0730RL (YAGEO) shows highest availability at 681,729 pieces.

Avoid: MCR10ERTF30R0 is discontinued at DiGi Electronics and should not be selected for new designs despite technical compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-6ENF30R0V replace RC2012F300CS in all applications? A: Yes. ERJ-6ENF30R0V matches all critical electrical parameters (30 Ohms, ±1%, 0.125W, ±100ppm/°C, -55°C to 155°C) and mechanical specifications (0805 package, 2 terminations, MSL 1). The primary difference is manufacturer and AEC-Q200 automotive certification, which adds qualification value without changing electrical behavior.

Q: What is the difference between 0.125W and 0.5W rated parts in the same 0805 package? A: Power rating indicates maximum continuous power dissipation. A 0.5W part (CRCW080530R0FKEAHP, ERJ-UP6F30R0V) dissipates heat more efficiently and tolerates higher current pulses than a 0.125W part. In applications where the resistor carries low steady-state current, both ratings are functionally equivalent. Higher power rating provides thermal margin and is preferred in high-reliability or pulse-intensive circuits.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the main component RC2012F300CS.

Q: What does AEC-Q200 certification mean? A: AEC-Q200 is an automotive-grade reliability standard. Parts bearing this certification (ERJ-6ENF30R0V, RMCF0805FT30R0, AC0805FR-0730RL, CRCW080530R0FKEA, CRCW080530R0FKEAHP, ERJ-UP6F30R0V, ESR10EZPF30R0) have undergone extended qualification testing for automotive environments. This certification is not required for general industrial use but is mandatory for automotive OEM applications.

Q: Can I use CRCW080530R0FKEAHP (0.5W) as a drop-in replacement for RC2012F300CS (0.125W)? A: Yes, mechanically and electrically. The 0.5W part fits the same 0805 footprint and maintains identical resistance, tolerance, and temperature specifications. However, verify that the increased height (0.020" versus 0.026") does not conflict with board-level clearances or component stacking constraints.

Q: What is the difference between Tape & Reel (TR) and Cut Tape & Digi-Reel (CT) packaging? A: Tape & Reel packaging is supplied on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape & Digi-Reel packaging is pre-cut into smaller quantities for manual handling or lower-volume assembly. Both formats contain identical components; packaging choice depends on production volume and assembly equipment capability.

Q: Why does MCR10ERTF30R0 show as discontinued? A: MCR10ERTF30R0 is discontinued at DiGi Electronics, indicating it is no longer actively stocked or supported by this distributor. Although the part maintains full technical compatibility, new designs should select from active alternatives to ensure long-term supply availability.

Q: Are height differences between substitute parts significant? A: Height variations range from 0.020" (0.50mm) to 0.028" (0.70mm). In standard PCB assembly, these differences are typically negligible. However, in space-constrained applications (such as low-profile enclosures or stacked component arrangements), verify clearance before selection. RC2012F300CS specifies 0.026" (0.65mm) maximum seated height.

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