RUT2012JR430CS Equivalent & Substitute Parts

Part Overview

The RUT2012JR430CS is a 430 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 current sense resistor features moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute components become necessary when primary inventory is unavailable, when design requirements demand enhanced tolerance specifications, or when automotive-grade certifications are required for specific applications.

Substiute Parts

RUT2012JR430CS

Samsung Electro-MechanicsIn Stock: 671RUT2012JR430CS Datasheet

Current PartRFQ

ERJ-U6QFR43V

Panasonic Electronic ComponentsIn Stock: 13296ERJ-U6QFR43V Datasheet

SimilarRFQ

ERJ-U6QJR43V

Panasonic Electronic ComponentsIn Stock: 5651ERJ-U6QJR43V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RUT2012JR430CS is determined by strict adherence to the following criteria:

Mandatory Matching Parameters:

• Resistance value: 430 mOhms (exact match required)
• Package type: 0805 (2012 Metric) form factor
• Power rating: 0.25W minimum
• Temperature coefficient: ±150ppm/°C
• Operating temperature range: -55°C to 155°C minimum
• RoHS3 compliance status
• Composition: Thick film construction

Allowable Variations:

• Tolerance: ±5% or tighter (±1% acceptable as superior specification)
• Height seated maximum: up to 0.026" (0.65mm) acceptable within PCB assembly constraints
• Additional features: Anti-sulfur and automotive AEC-Q200 certifications represent enhanced specifications compatible with the base application

The substitute parts ERJ-U6QFR43V and ERJ-U6QJR43V from Panasonic Electronic Components meet all mandatory parameters while offering either improved tolerance (±1%) or equivalent tolerance (±5%) with automotive-grade qualification.

Parameter Comparison

Engineering Selection Recommendations

ERJ-U6QJR43V Selection Criteria: This substitute maintains identical tolerance (±5%) and all core electrical specifications as the RUT2012JR430CS. The addition of AEC-Q200 automotive qualification and anti-sulfur features provides enhanced reliability for applications requiring automotive-grade components. The 0.002" (0.04mm) increase in seated height remains within standard PCB assembly tolerances for 0805 packages.

ERJ-U6QFR43V Selection Criteria: This substitute offers superior tolerance specification (±1% versus ±5%), providing tighter resistance accuracy while maintaining all other electrical and thermal parameters. AEC-Q200 certification and anti-sulfur construction are included. This option is appropriate when circuit design requires improved tolerance performance or when automotive-grade reliability is mandated.

Both Panasonic substitutes carry Active product status, ROHS3 compliance, and unlimited moisture sensitivity level matching the original specification. Selection between the two Panasonic options depends on tolerance requirements: choose ERJ-U6QJR43V for tolerance-equivalent substitution, or ERJ-U6QFR43V when improved tolerance specification is beneficial.

Frequently Asked Questions (FAQ)

Q: Can ERJ-U6QFR43V (±1% tolerance) be used in place of RUT2012JR430CS (±5% tolerance)?

A: Yes. The ±1% tolerance specification is superior to and fully compatible with ±5% tolerance requirements. The tighter tolerance ensures resistance values remain closer to the nominal 430 mOhms, which is acceptable in all applications designed for ±5% tolerance.

Q: Are the Panasonic substitutes physically compatible with the Samsung original?

A: Yes. Both ERJ-U6QFR43V and ERJ-U6QJR43V use the 0805 (2012 Metric) package with identical footprint dimensions (2.00mm L x 1.25mm W). The seated height difference (0.024" to 0.026") is within standard PCB assembly tolerances and does not affect component placement or soldering.

Q: What is the significance of AEC-Q200 certification on the Panasonic parts?

A: AEC-Q200 is an automotive industry qualification standard. This certification indicates the component has undergone rigorous testing for automotive applications. If your application does not require automotive qualification, this feature does not affect substitution eligibility but provides additional assurance of reliability.

Q: Can I substitute based on resistance value alone?

A: No. While 430 mOhms is the primary functional parameter, package type (0805), power rating (0.25W), temperature range (-55°C to 155°C), and composition (thick film) must all match. These parameters collectively determine circuit compatibility and performance.

Q: What does "anti-sulfur" mean on the Panasonic parts?

A: Anti-sulfur construction provides enhanced resistance to sulfur-containing environmental contaminants, which can degrade resistor performance in certain industrial or high-humidity applications. This feature does not affect substitution compatibility but represents an enhanced specification.

Q: Are there any height clearance concerns with the 0.002" difference?

A: No. The 0.002" (0.04mm) difference between RUT2012JR430CS (0.024" max) and Panasonic substitutes (0.026" max) is negligible for standard PCB assembly. This variation falls within normal manufacturing tolerances for 0805 packages and does not create clearance issues.

Q: Do all three parts have the same moisture sensitivity level?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, meaning they have unlimited shelf life and require no special moisture control during storage or handling.