RUT2012JR680CS Equivalent & Substitute Parts

Part Overview

The RUT2012JR680CS is a 680 milliohm thick film chip resistor manufactured by Samsung Electro-Mechanics. This 0805 (2012 metric) package component is rated for 0.25W (1/4W) power dissipation with ±5% tolerance and is designed for current sensing applications in moisture-resistant environments. The part is active in production status and widely used in industrial and consumer electronics where precision current measurement and thermal stability are required. Substitute parts are identified to provide design flexibility, inventory alternatives, and compatibility with specific application requirements such as automotive qualification or enhanced tolerance specifications.

Substiute Parts

RUT2012JR680CS

Samsung Electro-MechanicsIn Stock: 1078RUT2012JR680CS Datasheet

Current PartRFQ

ERJ-U6QFR68V

Panasonic Electronic ComponentsIn Stock: 13359ERJ-U6QFR68V Datasheet

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ERJ-U6QJR68V

Panasonic Electronic ComponentsIn Stock: 3820ERJ-U6QJR68V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RUT2012JR680CS is determined by strict alignment with the following core parameters:

Mandatory Matching Parameters:

• Resistance value: 680 mOhms
• Package / Case: 0805 (2012 Metric)
• Power rating: 0.25W (1/4W)
• Composition: Thick Film
• Operating temperature range: -55°C to 155°C
• Number of terminations: 2

Allowable Variation Parameters:

• Tolerance: ±5% or tighter (±1% is acceptable as a superior specification)
• Temperature coefficient: ±150ppm/°C (matching specification)
• Moisture sensitivity level: 1 (Unlimited)
• RoHS and REACH compliance status

Substitute parts must maintain identical mechanical footprint, electrical performance envelope, and thermal characteristics. Enhanced features such as automotive qualification (AEC-Q200) and anti-sulfur properties do not disqualify a part from substitution but represent additional capabilities beyond the base specification.

Parameter Comparison

Engineering Selection Recommendations

RUT2012JR680CS (Samsung Electro-Mechanics)

This is the primary reference part. It is active in production, ROHS3 compliant, and REACH unaffected. The part is optimized for current sensing applications with moisture-resistant thick film construction. Selection is appropriate for general industrial applications where the specified tolerance and thermal characteristics meet design requirements.

ERJ-U6QJR68V (Panasonic Electronic Components)

This substitute maintains identical electrical specifications (680 mOhms, ±5% tolerance, 0.25W) and mechanical compatibility with the RUT2012JR680CS. The ERJ-U6QJR68V adds automotive-grade qualification (AEC-Q200) and anti-sulfur properties, making it suitable for automotive and harsh environment applications. The part is active in production, ROHS3 compliant, and REACH unaffected. Maximum seated height is 0.026" (0.65mm) compared to 0.024" (0.61mm) for the Samsung part; this minor dimensional difference remains within typical PCB assembly tolerances for 0805 packages.

ERJ-U6QFR68V (Panasonic Electronic Components)

This substitute provides enhanced tolerance specification (±1% versus ±5%) while maintaining all other electrical and mechanical parameters. The ERJ-U6QFR68V is suitable for applications requiring tighter resistance accuracy. Like the ERJ-U6QJR68V, it includes AEC-Q200 automotive qualification and anti-sulfur properties. The part is active in production, ROHS3 compliant, and REACH unaffected. The maximum seated height of 0.026" (0.65mm) applies to this part as well.

Frequently Asked Questions (FAQ)

Q: Can ERJ-U6QJR68V be used as a direct replacement for RUT2012JR680CS?

A: Yes. Both parts share identical resistance (680 mOhms), tolerance (±5%), power rating (0.25W), package (0805), composition (thick film), and operating temperature range (-55°C to 155°C). The ERJ-U6QJR68V includes additional automotive qualification and anti-sulfur features that do not prevent substitution. The maximum seated height difference (0.026" versus 0.024") is within standard PCB assembly tolerances for this package class.

Q: What is the difference between ERJ-U6QJR68V and ERJ-U6QFR68V?

A: The primary difference is tolerance specification. ERJ-U6QJR68V is rated at ±5% tolerance, matching the RUT2012JR680CS. ERJ-U6QFR68V is rated at ±1% tolerance, providing tighter resistance accuracy. Both parts are otherwise electrically and mechanically identical, including AEC-Q200 automotive qualification and anti-sulfur properties.

Q: Are these parts suitable for current sensing applications?

A: Yes. The RUT2012JR680CS is specifically designed for current sensing with moisture-resistant thick film construction. The Panasonic substitutes (ERJ-U6QJR68V and ERJ-U6QFR68V) are compatible with current sensing applications and provide equivalent or enhanced performance characteristics.

Q: Do all three parts meet RoHS and REACH compliance requirements?

A: Yes. RUT2012JR680CS, ERJ-U6QJR68V, and ERJ-U6QFR68V are all ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level for these parts?

A: All three parts are rated at Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can ERJ-U6QFR68V be used in place of RUT2012JR680CS if tighter tolerance is required?

A: Yes. ERJ-U6QFR68V provides ±1% tolerance, which is superior to the ±5% specification of RUT2012JR680CS. All other electrical and mechanical parameters are compatible. This substitution is appropriate when design requirements call for enhanced resistance accuracy.

Q: Are there any height clearance concerns when substituting these parts?

A: The RUT2012JR680CS has a maximum seated height of 0.024" (0.61mm), while both Panasonic substitutes have a maximum seated height of 0.026" (0.65mm). This 0.002" (0.04mm) difference is within standard PCB assembly tolerances for 0805 packages and does not typically present clearance issues in standard designs.

Q: What is the temperature coefficient specification for all three parts?

A: All three parts share an identical temperature coefficient of ±150ppm/°C and operate across the same temperature range of -55°C to 155°C.