RT0805FRE079K31L Equivalent & Substitute Parts

Part Overview

The RT0805FRE079K31L is a 9.31 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package manufactured by YAGEO. This component is rated for 0.125W (1/8W) power dissipation with an operating temperature range of -55°C to 155°C. The part is ROHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating, indicating suitability for standard PCB assembly processes without moisture bake-out requirements.

Substitute parts are identified when they maintain the same resistance value (9.31 kOhms), package format (0805), and operating temperature range while offering equivalent or improved electrical performance characteristics. Alternative sources and enhanced specifications may be required due to inventory availability, supply chain optimization, or application-specific performance requirements.

Key Parameters

Parameter	Value
Resistance	9.31 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Operating Temperature	-55°C to 155°C
Temperature Coefficient	±50ppm/°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RT0805FRE079K31L is determined by the following mandatory parameters:

Resistance Value: Must be 9.31 kOhms (exact match)
Package Format: Must be 0805 (2012 Metric) to ensure PCB footprint compatibility
Operating Temperature Range: Must support -55°C to 155°C minimum
Composition: Thin film construction required for performance consistency
RoHS Compliance: ROHS3 compliant status required

Tolerance, temperature coefficient, and power rating variations are permitted within the substitute group, as these parameters define performance tiers rather than fundamental compatibility. Tolerance improvements (±0.1% or ±0.5% versus ±1%) and temperature coefficient reductions (±25ppm/°C versus ±50ppm/°C) represent enhanced specifications suitable for direct substitution. Power rating increases (0.25W versus 0.125W) are acceptable as they provide additional thermal margin without affecting electrical characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Temp Coeff	Package	Height (Max)	Features
RT0805FRE079K31L	YAGEO	9.31 kOhms	±1%	0.125W	±50ppm/°C	0805	0.024"	—
RT0805BRD079K31L	YAGEO	9.31 kOhms	±0.1%	0.125W	±25ppm/°C	0805	0.024"	—
RT0805DRE079K31L	YAGEO	9.31 kOhms	±0.5%	0.125W	±50ppm/°C	0805	0.024"	—
2176093-2	TE Connectivity	9.31 kOhms	±0.1%	0.25W	±25ppm/°C	0805	0.026"	—
ERA-6AEB9311V	Panasonic	9.31 kOhms	±0.1%	0.125W	±25ppm/°C	0805	0.024"	AEC-Q200
RG2012P-9311-B-T5	Susumu	9.31 kOhms	±0.1%	0.125W	±25ppm/°C	0805	0.020"	Anti-Sulfur, AEC-Q200

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, confirming compatibility with standard manufacturing processes. Selection among substitutes should be based on the following criteria:

YAGEO RT Series (RT0805BRD079K31L, RT0805DRE079K31L): These parts offer improved tolerance specifications (±0.1% and ±0.5% respectively) while maintaining identical package dimensions and power ratings. The RT0805BRD079K31L provides the tightest tolerance (±0.1%) with reduced temperature coefficient (±25ppm/°C), suitable for precision analog circuits. The RT0805DRE079K31L offers mid-range tolerance (±0.5%) with standard temperature coefficient, balancing cost and performance.

TE Connectivity 2176093-2: This part provides increased power rating (0.25W versus 0.125W) with ±0.1% tolerance and ±25ppm/°C temperature coefficient. The slightly increased height (0.026" versus 0.024") requires verification of PCB clearance in space-constrained layouts. This option is suitable for applications requiring enhanced thermal headroom.

Panasonic ERA-6AEB9311V: This part carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability standards. It provides ±0.1% tolerance and ±25ppm/°C temperature coefficient in the standard 0.125W power rating. Selection is appropriate for automotive or mission-critical applications requiring documented quality assurance.

Susumu RG2012P-9311-B-T5: This part combines AEC-Q200 automotive qualification with anti-sulfur coating, providing enhanced environmental protection. It offers ±0.1% tolerance, ±25ppm/°C temperature coefficient, and the lowest profile height (0.020"), making it suitable for high-density automotive or harsh-environment applications.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRD079K31L directly replace RT0805FRE079K31L?

A: Yes. Both parts share identical resistance (9.31 kOhms), package format (0805), power rating (0.125W), and operating temperature range (-55°C to 155°C). The RT0805BRD079K31L provides improved tolerance (±0.1% versus ±1%) and reduced temperature coefficient (±25ppm/°C versus ±50ppm/°C), making it a direct upgrade with no design modifications required.

Q: What is the difference between tolerance and temperature coefficient?

A: Tolerance specifies the initial accuracy of the resistance value at 25°C (±1% means the actual value falls within 9.217 kOhms to 9.403 kOhms). Temperature coefficient describes how the resistance changes with temperature (±50ppm/°C means the resistance changes by up to 0.005% per degree Celsius). Lower values in both parameters indicate higher precision and stability.

Q: Can 2176093-2 be used in place of RT0805FRE079K31L?

A: Yes, with height verification. The 2176093-2 maintains the same resistance, package, and operating temperature range. Its increased power rating (0.25W versus 0.125W) and slightly greater height (0.026" versus 0.024") require confirmation that PCB clearance and thermal design accommodate these changes. Electrical performance is fully compatible.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard (Automotive Electronics Council) specifying reliability requirements for passive components in automotive applications. Parts carrying this qualification (ERA-6AEB9311V, RG2012P-9311-B-T5) have undergone additional testing for temperature cycling, humidity, and mechanical stress. These parts are suitable for automotive and high-reliability applications.

Q: Why would I choose RG2012P-9311-B-T5 over other substitutes?

A: The RG2012P-9311-B-T5 combines AEC-Q200 automotive qualification with anti-sulfur coating, providing enhanced environmental protection in harsh conditions. Its lowest profile height (0.020") offers advantages in high-density PCB layouts. Selection is appropriate for automotive applications or environments with corrosive atmospheres.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, confirming they meet European Union restrictions on hazardous substances. All parts also maintain MSL Level 1 (Unlimited) moisture sensitivity rating, eliminating the need for moisture bake-out procedures during assembly.

Q: Can I mix different substitute parts in the same circuit?

A: Yes. All substitute parts maintain the same resistance value and package format. However, circuits with tight tolerance requirements should use parts with matching tolerance specifications. For example, precision analog circuits should use parts with ±0.1% tolerance (RT0805BRD079K31L, 2176093-2, ERA-6AEB9311V, or RG2012P-9311-B-T5) rather than mixing with ±1% or ±0.5% tolerance parts.

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