RUT2012FR150CS Equivalent & Substitute Parts

Part Overview

The RUT2012FR150CS is a 150 mOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics. This 0805 (2012 Metric) package component is rated for 0.25W (1/4W) power dissipation and is designed for current sense applications with moisture-resistant characteristics. The part is Active in product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific certifications.

Substiute Parts

RUT2012FR150CS

Samsung Electro-MechanicsIn Stock: 808RUT2012FR150CS Datasheet

Current PartRFQ

ERJ-6DSFR15V

Panasonic Electronic ComponentsIn Stock: 12622ERJ-6DSFR15V Datasheet

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ERJ-U6SFR15V

Panasonic Electronic ComponentsIn Stock: 45579ERJ-U6SFR15V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RUT2012FR150CS is determined by the following criteria:

Mandatory Matching Parameters:

• Resistance value: 150 mOhms (exact match required)
• Tolerance: ±1% (equal or tighter tolerance acceptable)
• Package: 0805 (2012 Metric) (exact match required for PCB compatibility)
• Composition: Thick Film (maintains electrical performance characteristics)
• Operating temperature range: -55°C ~ 155°C (minimum requirement)

Flexible Parameters:

• Power rating: 0.25W minimum; higher ratings (0.5W) are acceptable substitutes
• Temperature coefficient: ±150ppm/°C or better
• Certifications and features: Additional certifications (AEC-Q200, Anti-Sulfur) do not prevent substitution but may add value

Compliance Requirements:

• RoHS3 compliance required
• MSL 1 (Unlimited) moisture sensitivity level maintained

Two substitute parts meet these criteria: ERJ-U6SFR15V (direct electrical equivalent with automotive certification) and ERJ-6DSFR15V (higher power rating variant with automotive certification).

Parameter Comparison

Engineering Selection Recommendations

ERJ-U6SFR15V Selection Criteria: This substitute provides direct electrical equivalence to the RUT2012FR150CS with identical power rating (0.25W), tolerance (±1%), and temperature coefficient (±150ppm/°C). The ERJ-U6SFR15V adds AEC-Q200 automotive qualification and anti-sulfur protection without compromising standard application requirements. Physical dimensions remain compatible with 0805 footprints, with maximum seated height of 0.026" compared to 0.024" for the main part. This substitute is appropriate for applications requiring automotive-grade reliability or environments with sulfur exposure.

ERJ-6DSFR15V Selection Criteria: This substitute maintains electrical equivalence (150 mOhms, ±1% tolerance) but provides elevated power rating (0.5W versus 0.25W). The higher power rating allows operation at increased current levels without thermal stress. Temperature coefficient specification (0/+150ppm/°C) differs slightly from the main part but remains within acceptable performance parameters. Maximum seated height increases to 0.028", which must be verified against PCB clearance constraints. This substitute is appropriate for applications with higher current sense requirements or thermal margin considerations.

Compliance Status: All three parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. Both substitute parts carry AEC-Q200 automotive qualification, which does not restrict use in non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-U6SFR15V replace RUT2012FR150CS in any application? A: Yes, ERJ-U6SFR15V provides direct electrical substitution with identical resistance (150 mOhms), tolerance (±1%), power rating (0.25W), and temperature coefficient (±150ppm/°C). The 0805 package footprint is identical. Physical height difference (0.026" versus 0.024") is negligible for standard PCB designs. AEC-Q200 certification and anti-sulfur features are additional benefits that do not restrict substitution.

Q: When should ERJ-6DSFR15V be used instead of the main part? A: ERJ-6DSFR15V is selected when the application requires higher power dissipation capability (0.5W versus 0.25W). This higher rating accommodates increased current sense requirements or provides thermal margin in high-current applications. The 0805 package remains compatible, though maximum seated height increases to 0.028". Verify PCB clearance before selection.

Q: Are there any height restrictions when substituting these parts? A: The main part RUT2012FR150CS has maximum seated height of 0.024". ERJ-U6SFR15V measures 0.026" and ERJ-6DSFR15V measures 0.028". These differences are small but must be verified against PCB design constraints, particularly in high-density layouts or applications with limited vertical clearance.

Q: Do the substitute parts maintain the same moisture resistance? A: Yes, all three parts carry MSL 1 (Unlimited) moisture sensitivity level rating, indicating unlimited shelf life and moisture resistance. The RUT2012FR150CS specifies "Moisture Resistant" as a feature; the substitute parts maintain equivalent moisture protection through MSL 1 classification.

Q: What is the significance of AEC-Q200 certification on the substitute parts? A: AEC-Q200 is an automotive qualification standard. Both Panasonic substitutes carry this certification, indicating compliance with automotive reliability and performance requirements. This certification does not restrict use in non-automotive applications and provides additional assurance of component quality and consistency.

Q: Can these parts be used interchangeably in current sense applications? A: Yes, all three parts are specified for current sense applications. The 150 mOhms resistance value and ±1% tolerance are maintained across all variants. Selection between them depends on power rating requirements and environmental certifications needed for the specific application.

Q: What is the difference between the temperature coefficients listed? A: RUT2012FR150CS and ERJ-U6SFR15V both specify ±150ppm/°C, indicating symmetric drift across the operating temperature range. ERJ-6DSFR15V specifies 0/+150ppm/°C, indicating zero drift at the lower end and positive drift toward the upper temperature limit. Both specifications meet the operating range of -55°C ~ 155°C and are suitable for current sense applications.