RC2012F4644CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F4644CS is a 4.64 MOhms ±1% 0.125W chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant. The part is currently active in production with 964 pieces available in inventory. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or alternative sourcing.

Key Parameters

Parameter	Value	Unit
Resistance	4.64	MOhms
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
Moisture Sensitivity Level	1 (Unlimited)	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012F4644CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 4.64 MOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Package: 0805 (2012 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Moisture Sensitivity Level: 1 (Unlimited)
RoHS compliance: ROHS3 Compliant

All identified substitute parts meet these mandatory parameters. Variations in physical dimensions (height-seated maximum) and manufacturer-specific series designations do not affect functional substitutability. The CRCW08054M64FKEA includes additional automotive AEC-Q200 qualification, which represents an enhancement rather than a deviation from base specifications.

Parameter Comparison

Parameter	RC2012F4644CS (Samsung)	RC0805FR-074M64L (YAGEO)	CRCW08054M64FKEA (Vishay Dale)
Resistance	4.64 MOhms	4.64 MOhms	4.64 MOhms
Tolerance	±1%	±1%	±1%
Power (Watts)	0.125W (1/8W)	0.125W (1/8W)	0.125W (1/8W)
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film
Features	Moisture Resistant	Moisture Resistant	Automotive AEC-Q200
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)
Height - Seated (Max)	0.026" (0.66mm)	0.024" (0.60mm)	0.020" (0.50mm)
Number of Terminations	2	2	2
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

RC0805FR-074M64L (YAGEO): This part is a direct functional equivalent to the RC2012F4644CS. All electrical and mechanical parameters are identical. The YAGEO RC_L series maintains the same performance envelope with 14,323 units in inventory, providing robust supply availability.

CRCW08054M64FKEA (Vishay Dale): This part meets all mandatory substitution criteria and includes automotive AEC-Q200 qualification. The CRCW series is suitable for applications requiring automotive-grade reliability. The reduced seated height (0.020" versus 0.026") may provide advantages in space-constrained PCB layouts. Inventory availability is 21,477 units.

Both substitute parts are ROHS3 compliant, REACH unaffected, and maintain identical electrical performance across the specified operating temperature range. Selection between alternatives should be based on supply chain strategy, inventory positioning, and application-specific certifications.

Frequently Asked Questions (FAQ)

Q: Can RC0805FR-074M64L replace RC2012F4644CS in any application?

A: Yes. The RC0805FR-074M64L is functionally equivalent across all electrical parameters (resistance, tolerance, power rating, temperature coefficient) and mechanical specifications (package, dimensions, terminations). Both parts are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between the CRCW08054M64FKEA and the Samsung part?

A: The CRCW08054M64FKEA meets all electrical and mechanical requirements of the RC2012F4644CS. The primary distinction is automotive AEC-Q200 qualification, which is an additional certification. The CRCW part has a lower seated height (0.020" versus 0.026"), which may affect PCB layout considerations.

Q: Are all three parts interchangeable on the same PCB?

A: Yes, all three parts are interchangeable from an electrical and functional standpoint. The 0805 (2012 Metric) package is identical across all three parts. Variations in seated height are within typical PCB assembly tolerances and do not prevent interchangeability.

Q: Which part should I select for automotive applications?

A: The CRCW08054M64FKEA includes AEC-Q200 automotive qualification. If automotive certification is required, this part is the appropriate selection. The other two parts are suitable for non-automotive applications.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. All three parts carry this rating, meaning they can be stored and handled without special moisture control procedures.

Q: Are there any height restrictions that would prevent using the Vishay part?

A: The CRCW08054M64FKEA has a maximum seated height of 0.020" compared to 0.026" for the Samsung part. This lower profile may be beneficial in space-constrained designs but does not prevent substitution. Verify PCB clearance specifications for your specific application.

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