Equivalent & Substitute Parts for RT0805FRE071K78L

Part Overview

The RT0805FRE071K78L is a 1.78 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.125W (1/8W). Manufactured by YAGEO and currently in active production status, this component is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Alternative equivalent and substitute parts are available from multiple manufacturers with improved tolerance specifications and enhanced automotive qualification where applicable.

Key Parameters

Parameter	Value
Resistance	1.78 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RT0805FRE071K78L is determined by the following criteria:

Primary Substitution Parameters:

Resistance value: 1.78 kOhms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Operating Temperature Range: -55°C ~ 155°C (minimum requirement)
RoHS Status: ROHS3 Compliant (minimum requirement)

Allowable Variations:

Tolerance: May be equal to or tighter than ±1%
Power Rating: May be equal to or greater than 0.125W
Temperature Coefficient: May be equal to or lower than ±50ppm/°C
Moisture Sensitivity Level: MSL 1 acceptable

Substitute parts are grouped into two categories: upgrade specifications (improved tolerance and temperature coefficient) and direct equivalents with enhanced power ratings or automotive qualification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Temp. Coefficient	Operating Temp.	RoHS Status
RT0805FRE071K78L	YAGEO	1.78 kOhms	±1%	0.125W	±50ppm/°C	-55°C ~ 155°C	ROHS3
RT0805BRD071K78L	YAGEO	1.78 kOhms	±0.1%	0.125W	±25ppm/°C	-55°C ~ 155°C	ROHS3
RT0805DRD071K78L	YAGEO	1.78 kOhms	±0.5%	0.125W	±25ppm/°C	-55°C ~ 155°C	ROHS3
3-2176092-9	TE Connectivity	1.78 kOhms	±0.1%	0.25W	±25ppm/°C	-55°C ~ 155°C	ROHS3
ERA-6AEB1781V	Panasonic	1.78 kOhms	±0.1%	0.125W	±25ppm/°C	-55°C ~ 155°C	ROHS3

Engineering Selection Recommendations

RT0805BRD071K78L (YAGEO): Upgrade specification with tighter tolerance (±0.1%) and improved temperature coefficient (±25ppm/°C). Maintains identical power rating and package. ROHS3 compliant with active product status. Suitable for applications requiring enhanced precision without power derating.

RT0805DRD071K78L (YAGEO): Mid-range tolerance (±0.5%) with improved temperature coefficient (±25ppm/°C). ROHS3 compliant with active product status. Provides tolerance improvement over the main part while maintaining cost efficiency.

3-2176092-9 (TE Connectivity): Direct equivalent with doubled power rating (0.25W vs 0.125W), tighter tolerance (±0.1%), and improved temperature coefficient (±25ppm/°C). ROHS3 compliant. Suitable for applications requiring thermal margin or higher power dissipation capability within the same package footprint.

ERA-6AEB1781V (Panasonic): Upgrade specification with AEC-Q200 automotive qualification, tighter tolerance (±0.1%), and improved temperature coefficient (±25ppm/°C). Maintains identical power rating and package. ROHS3 compliant with active product status. Required for automotive applications meeting AEC-Q200 standards.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRD071K78L replace RT0805FRE071K78L in all applications?

A: Yes. RT0805BRD071K78L meets or exceeds all electrical and mechanical parameters of the main part. The tighter tolerance (±0.1% vs ±1%) and improved temperature coefficient (±25ppm/°C vs ±50ppm/°C) provide enhanced performance. Identical package and power rating ensure direct substitution.

Q: What is the difference between the YAGEO upgrade options?

A: RT0805BRD071K78L offers the tightest tolerance (±0.1%) with temperature coefficient of ±25ppm/°C. RT0805DRD071K78L provides mid-range tolerance (±0.5%) with the same temperature coefficient. Both are ROHS3 compliant and maintain the 0.125W power rating. Selection depends on tolerance requirements for the specific application.

Q: When should 3-2176092-9 be selected over other substitutes?

A: Select 3-2176092-9 when the application requires higher power dissipation capability. This TE Connectivity part doubles the power rating to 0.25W while maintaining the 0805 package footprint. Tighter tolerance (±0.1%) and improved temperature coefficient (±25ppm/°C) are additional benefits. ROHS3 compliant.

Q: Is ERA-6AEB1781V suitable for non-automotive applications?

A: Yes. ERA-6AEB1781V is a direct electrical and mechanical equivalent with AEC-Q200 automotive qualification. The tighter tolerance (±0.1%), improved temperature coefficient (±25ppm/°C), and automotive qualification make it suitable for any application. ROHS3 compliant with active product status.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in Tape & Reel (TR) packaging in the 0805 (2012 Metric) package. Physical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) are identical across all parts, ensuring direct PCB compatibility.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Operating temperature range is -55°C ~ 155°C across all options. ERA-6AEB1781V additionally carries AEC-Q200 automotive qualification. REACH status is either REACH Unaffected or Vendor Undefined as specified by manufacturer.

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