RUT2012JR270CS Equivalent & Substitute Parts

Part Overview

The RUT2012JR270CS is a 270 mOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.25W (1/4W) power dissipation in the 0805 (2012 Metric) package. This component is designed for current sense applications requiring moisture resistance and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with 773 units in current inventory stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical parameters including resistance value, tolerance, power rating, package dimensions, and operating temperature range.

Substiute Parts

RUT2012JR270CS

Samsung Electro-MechanicsIn Stock: 880RUT2012JR270CS Datasheet

Current PartRFQ

ERJ-U6QFR27V

Panasonic Electronic ComponentsIn Stock: 55680ERJ-U6QFR27V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RUT2012JR270CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value must equal 270 mOhms
• Power rating must be 0.25W (1/4W) or greater
• Temperature coefficient must be ±150ppm/°C
• Operating temperature range must encompass -55°C to 155°C

Mechanical Parameters:

• Package must be 0805 (2012 Metric)
• Physical dimensions must be 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Composition must be thick film

Compliance Parameters:

• RoHS3 compliance required
• MSL rating must be 1 (Unlimited) or equivalent

The tolerance specification (±5%) establishes the baseline accuracy requirement. Substitute parts with equal or tighter tolerance specifications (such as ±1%) maintain full compatibility while providing improved precision characteristics.

Parameter Comparison

Engineering Selection Recommendations

RUT2012JR270CS (Samsung Electro-Mechanics)

Select this part when the original design specification calls for ±5% tolerance and moisture-resistant thick film construction. The component maintains Active product status with established supply availability (773 units in stock). ROHS3 compliance and MSL 1 rating confirm suitability for standard manufacturing and storage conditions.

ERJ-U6QFR27V (Panasonic Electronic Components)

This substitute part provides equivalent electrical and mechanical performance with the following distinctions:

• Tolerance specification of ±1% provides improved precision over the ±5% baseline
• AEC-Q200 automotive qualification rating indicates enhanced reliability screening
• Anti-sulfur feature provides additional environmental protection
• Substantially higher inventory availability (55,615 units in stock)
• Maximum seated height of 0.026" (0.65mm) compared to 0.024" (0.61mm) remains within acceptable PCB assembly clearance parameters

Both parts maintain identical operating temperature range (-55°C to 155°C), temperature coefficient (±150ppm/°C), and RoHS3 compliance status. Selection between these parts depends on design requirements for tolerance precision and automotive-grade reliability certification.

Frequently Asked Questions (FAQ)

Q: Can ERJ-U6QFR27V replace RUT2012JR270CS in existing designs?

A: Yes. Both parts share identical resistance value (270 mOhms), power rating (0.25W), package (0805), operating temperature range (-55°C to 155°C), and composition (thick film). The ERJ-U6QFR27V tolerance of ±1% is tighter than the RUT2012JR270CS specification of ±5%, maintaining full compatibility.

Q: What is the significance of the ±1% tolerance on the Panasonic part?

A: The ±1% tolerance specification on ERJ-U6QFR27V provides improved accuracy compared to the ±5% baseline of RUT2012JR270CS. This tighter tolerance reduces resistance variation across the production batch, beneficial for precision current sensing applications where accuracy is critical.

Q: Are there package compatibility concerns between these parts?

A: No. Both parts use the 0805 (2012 Metric) package with identical length and width dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). The maximum seated height difference (0.024" versus 0.026") is negligible for standard PCB assembly processes.

Q: What does AEC-Q200 qualification mean for the Panasonic part?

A: AEC-Q200 is an automotive industry standard qualification that certifies the component has undergone enhanced reliability testing and screening. This certification indicates suitability for automotive applications requiring higher reliability assurance.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both RUT2012JR270CS and ERJ-U6QFR27V carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or manufacturing processes.

Q: What is the temperature coefficient specification and why does it matter?

A: Both parts specify ±150ppm/°C temperature coefficient, meaning resistance changes by approximately 150 parts per million for each degree Celsius change in operating temperature. This specification is identical across both parts and determines performance stability across the -55°C to 155°C operating range.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Compliance status is equivalent. The ERJ-U6QFR27V carries additional AEC-Q200 automotive qualification, which is a supplementary certification rather than a compliance requirement difference.