RUT2012FR330CS Equivalent & Substitute Parts

Part Overview

The RUT2012FR330CS is a 330 mOhms ±1% 0.25W thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This current sense resistor is designed for precision measurement applications requiring low resistance values with tight tolerance specifications. The component is actively produced and widely used in power management and current monitoring circuits. Equivalent parts may be required due to supply chain considerations, inventory availability, or specific application requirements such as automotive qualification or enhanced environmental protection.

Key Parameters

Parameter	Value	Specification Type
Resistance Value	330 mOhms	Critical
Tolerance	±1%	Critical
Power Rating	0.25W (1/4W)	Critical
Package Type	0805 (2012 Metric)	Critical
Composition	Thick Film	Critical
Temperature Coefficient	±150ppm/°C	Important
Operating Temperature Range	-55°C ~ 155°C	Important
Moisture Sensitivity Level	1 (Unlimited)	Important
RoHS Status	ROHS3 Compliant	Compliance

Substitute Part Grouping Explanation

Substitution of the RUT2012FR330CS is determined by strict equivalence across the following parameters:

Critical Substitution Parameters:

Resistance value of 330 mOhms
Tolerance of ±1%
Power rating of 0.25W (1/4W)
Package configuration of 0805 (2012 Metric)
Thick film composition

Secondary Compatibility Parameters:

Temperature coefficient of ±150ppm/°C
Operating temperature range of -55°C ~ 155°C
Moisture Sensitivity Level 1 (Unlimited)
RoHS3 compliance
Two terminations (standard for chip resistors)

The ERJ-U6QFR33V from Panasonic Electronic Components meets all critical and secondary parameters. Additional features such as anti-sulfur coating and AEC-Q200 automotive qualification in the substitute part represent enhanced capabilities that do not conflict with the original specification.

Parameter Comparison

Parameter	RUT2012FR330CS (Samsung)	ERJ-U6QFR33V (Panasonic)	Match Status
Resistance	330 mOhms	330 mOhms	Equivalent
Tolerance	±1%	±1%	Equivalent
Power Rating	0.25W (1/4W)	0.25W (1/4W)	Equivalent
Package	0805 (2012 Metric)	0805 (2012 Metric)	Equivalent
Composition	Thick Film	Thick Film	Equivalent
Temperature Coefficient	±150ppm/°C	±150ppm/°C	Equivalent
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Physical Dimensions (L x W)	0.079" x 0.049" (2.00mm x 1.25mm)	0.079" x 0.049" (2.00mm x 1.25mm)	Equivalent
Height - Seated (Max)	0.024" (0.61mm)	0.026" (0.65mm)	Compatible
Number of Terminations	2	2	Equivalent

Engineering Selection Recommendations

RUT2012FR330CS (Samsung Electro-Mechanics) is the primary specification. This component is actively produced, ROHS3 compliant, and REACH unaffected. It is suitable for general industrial and consumer applications requiring 330 mOhms current sense resistors with standard thick film characteristics.

ERJ-U6QFR33V (Panasonic Electronic Components) is a direct functional equivalent with identical electrical specifications. This substitute provides additional value through AEC-Q200 automotive qualification and anti-sulfur coating, making it suitable for automotive and harsh environment applications. The maximum seated height of 0.026" (0.65mm) compared to 0.024" (0.61mm) for the Samsung part remains within typical PCB design tolerances for 0805 packages. Both parts are ROHS3 compliant and REACH unaffected.

Selection between these parts should be based on application requirements, supply availability, and any specific environmental or automotive qualification mandates.

Frequently Asked Questions (FAQ)

Q: Can ERJ-U6QFR33V replace RUT2012FR330CS in all applications?

A: Yes. Both parts meet identical electrical specifications: 330 mOhms ±1% resistance, 0.25W power rating, ±150ppm/°C temperature coefficient, and -55°C ~ 155°C operating range. Both are packaged in 0805 (2012 Metric) with two terminations. The ERJ-U6QFR33V includes additional features (anti-sulfur, AEC-Q200) that do not conflict with the original specification.

Q: Are there physical compatibility concerns?

A: Physical dimensions are equivalent at 0.079" L x 0.049" W (2.00mm x 1.25mm). The maximum seated height differs slightly: RUT2012FR330CS at 0.024" (0.61mm) and ERJ-U6QFR33V at 0.026" (0.65mm). This 0.002" (0.04mm) difference is within standard PCB design tolerances for 0805 packages and does not affect board-level compatibility.

Q: Do both parts meet compliance requirements?

A: Yes. Both RUT2012FR330CS and ERJ-U6QFR33V are ROHS3 compliant and REACH unaffected. Both carry Moisture Sensitivity Level 1 (Unlimited), indicating no special handling requirements.

Q: What is the difference between these parts?

A: The core electrical and mechanical specifications are identical. The ERJ-U6QFR33V from Panasonic includes AEC-Q200 automotive qualification and anti-sulfur coating, making it suitable for automotive and corrosive environments. The RUT2012FR330CS from Samsung is specified for general industrial use.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For automotive or harsh environment applications, ERJ-U6QFR33V is preferred due to AEC-Q200 qualification. For general industrial applications, either part is acceptable based on supply availability and cost considerations.

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