RC2012F3090CS Equivalent & Substitute Parts

Part Overview

The RC2012F3090CS is a 309 Ohms ±1% 0.125W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is classified as Active product status with moisture resistant characteristics and ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings align with the original component, enabling direct replacement in circuit applications without design modification.

Key Parameters

Parameter	Value
Resistance	309 Ohms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC2012F3090CS are qualified based on the following criteria:

Electrical Parameters (Must Match Exactly):

Resistance value: 309 Ohms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

Package / Case: 0805 (2012 Metric)
Number of terminations: 2
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)

Compliance & Environmental (Must Match or Exceed):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Status: REACH Unaffected

Substitute parts are classified into two categories:

Direct Substitutes: Parts meeting all electrical, mechanical, and compliance requirements with identical or superior specifications.

Similar Substitutes: Parts meeting all core electrical and mechanical requirements with additional certifications (AEC-Q200 automotive qualification) that do not restrict use in non-automotive applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Height Max (mm)	RoHS	MSL	Product Status	Features
RC2012F3090CS	Samsung Electro-Mechanics	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.65	ROHS3	1	Active	Moisture Resistant
CR0805-FX-3090ELF	Bourns Inc.	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.60	ROHS3	1	Active	Moisture Resistant
ERJ-6ENF3090V	Panasonic Electronic Components	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.70	ROHS3	1	Active	Automotive AEC-Q200
RC0805FR-07309RL	YAGEO	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.60	ROHS3	1	Active	Moisture Resistant
RMCF0805FT309R	Stackpole Electronics Inc	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.65	ROHS3	1	Active	Automotive AEC-Q200
CRCW0805309RFKEA	Vishay Dale	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.50	ROHS3	1	Active	Automotive AEC-Q200
MCR10ERTF3090	Rohm Semiconductor	309 Ω	±1%	0.125	0805	±100ppm/°C	-55~155°C	0.65	ROHS3	1	Discontinued at DiGi Electronics	Thick Film

Engineering Selection Recommendations

For Active Product Applications:

CR0805-FX-3090ELF (Bourns Inc.) and RC0805FR-07309RL (YAGEO) are direct substitutes with active product status and moisture resistant specifications matching the original RC2012F3090CS. Both maintain identical electrical parameters and ROHS3 compliance with reduced maximum height (0.60mm vs 0.65mm), providing improved PCB assembly compatibility.

For Automotive or Enhanced Reliability Applications:

ERJ-6ENF3090V (Panasonic Electronic Components), RMCF0805FT309R (Stackpole Electronics Inc), and CRCW0805309RFKEA (Vishay Dale) are qualified substitutes with AEC-Q200 automotive certification. These components meet all electrical and mechanical requirements of the original part while providing additional automotive-grade reliability qualification. AEC-Q200 certification does not restrict use in non-automotive applications.

For Discontinued Product Replacement:

MCR10ERTF3090 (Rohm Semiconductor) is listed as discontinued at DiGi Electronics. This part meets all electrical and mechanical specifications but should not be selected for new designs or long-term supply requirements. Use CR0805-FX-3090ELF, RC0805FR-07309RL, or automotive-qualified alternatives for continued availability.

Packaging Considerations:

The original RC2012F3090CS is supplied in Tape & Reel (TR) format. CR0805-FX-3090ELF and RC0805FR-07309RL maintain TR packaging. ERJ-6ENF3090V is supplied in Cut Tape (CT) & Digi-Reel® format. MCR10ERTF3090 is supplied in Cut Tape (CT) & Digi-Reel® format. Verify packaging format compatibility with assembly equipment and procurement workflows.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC0805FR-07309RL for RC2012F3090CS in my circuit?

A: Yes. RC0805FR-07309RL meets all electrical parameters (309 Ohms ±1%, 0.125W), mechanical specifications (0805 package, 2.00mm x 1.25mm), and compliance requirements (ROHS3, MSL 1). The component is manufactured by YAGEO and maintains active product status.

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

A: Direct substitutes (CR0805-FX-3090ELF, RC0805FR-07309RL) match the original part's specifications and features exactly. Similar substitutes (ERJ-6ENF3090V, RMCF0805FT309R, CRCW0805309RFKEA) include additional AEC-Q200 automotive certification, which provides enhanced reliability qualification without restricting use in non-automotive applications.

Q: Does AEC-Q200 certification affect compatibility in non-automotive circuits?

A: No. AEC-Q200 certification indicates automotive-grade reliability qualification and does not restrict component use in non-automotive applications. AEC-Q200 qualified parts are fully compatible with standard industrial and consumer applications.

Q: Why is MCR10ERTF3090 listed as a substitute if it is discontinued?

A: MCR10ERTF3090 meets all electrical and mechanical requirements for substitution but is discontinued at DiGi Electronics. This part should not be selected for new designs or applications requiring long-term supply continuity. Use active alternatives such as CR0805-FX-3090ELF or RC0805FR-07309RL.

Q: Are there differences in maximum height between substitute parts?

A: Yes. Maximum seated heights vary: RC2012F3090CS (0.65mm), CR0805-FX-3090ELF (0.60mm), ERJ-6ENF3090V (0.70mm), RC0805FR-07309RL (0.60mm), RMCF0805FT309R (0.65mm), CRCW0805309RFKEA (0.50mm), MCR10ERTF3090 (0.65mm). All heights remain within 0805 package specifications. Verify height clearance for high-density PCB layouts or applications with height constraints.

Q: What packaging formats are available for substitute parts?

A: CR0805-FX-3090ELF and RC0805FR-07309RL are supplied in Tape & Reel (TR) format, matching the original RC2012F3090CS. ERJ-6ENF3090V and MCR10ERTF3090 are supplied in Cut Tape (CT) & Digi-Reel® format. Confirm packaging compatibility with your assembly equipment and procurement requirements before selection.

Q: Can I use these substitutes in high-temperature applications?

A: Yes. All substitute parts maintain the same operating temperature range as the original RC2012F3090CS: -55°C to 155°C. Temperature coefficient is ±100ppm/°C across all parts, ensuring consistent performance across the specified temperature range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance of the original RC2012F3090CS.

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