Equivalent & Substitute Parts for RT0805FRE0729K4L

Part Overview

The RT0805FRE0729K4L is a 29.4 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.125W (1/8W) power dissipation. This YAGEO component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 1019 units in stock. Equivalent and substitute parts are identified for applications requiring improved tolerance specifications, higher power ratings, or automotive-grade qualification.

Key Parameters

Parameter	Value
Resistance	29.4 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package	0805 (2012 Metric)
Composition	Thin Film
Operating Temperature	-55°C to 155°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Compatibility Parameters:

Resistance value: 29.4 kOhms (exact match required)
Package: 0805 (2012 Metric) (physical and electrical compatibility)
Composition: Thin Film (electrical performance characteristics)
Operating temperature range: -55°C to 155°C (minimum requirement)
RoHS3 compliance and MSL 1 rating (regulatory and environmental requirements)

Upgrade Parameters (allow substitution with improved specifications):

Tolerance: ±1% or better (±0.1% is acceptable upgrade)
Power rating: 0.125W or higher (0.25W is acceptable upgrade)
Temperature coefficient: ±50ppm/°C or better (±25ppm/°C is acceptable upgrade)

Manufacturer Flexibility:

YAGEO, TE Connectivity Passive Product, and Panasonic Electronic Components are qualified manufacturers for this application class

Substitute parts are grouped as upgrades when tolerance, power rating, or temperature coefficient specifications exceed the original part requirements while maintaining all mandatory compatibility parameters.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Temp Coeff	Operating Temp	Package	Height (Max)	RoHS Status	Inventory
RT0805FRE0729K4L	YAGEO	29.4 kΩ	±1%	0.125W	±50ppm/°C	-55°C to 155°C	0805	0.60mm	ROHS3	1019 Pcs
RT0805BRD0729K4L	YAGEO	29.4 kΩ	±0.1%	0.125W	±25ppm/°C	-55°C to 155°C	0805	0.60mm	ROHS3	3110 Pcs
RT0805BRE0729K4L	YAGEO	29.4 kΩ	±0.1%	0.125W	±50ppm/°C	-55°C to 155°C	0805	0.60mm	ROHS3	13249 Pcs
4-2176093-7	TE Connectivity	29.4 kΩ	±0.1%	0.25W	±25ppm/°C	-55°C to 155°C	0805	0.65mm	ROHS3	1949 Pcs
ERA-6AEB2942V	Panasonic	29.4 kΩ	±0.1%	0.125W	±25ppm/°C	-55°C to 155°C	0805	0.60mm	ROHS3	8156 Pcs

Engineering Selection Recommendations

RT0805BRD0729K4L (YAGEO): Direct upgrade with improved tolerance (±0.1%) and reduced temperature coefficient (±25ppm/°C). Maintains identical power rating and package dimensions. Suitable for applications requiring tighter tolerance control. ROHS3 compliant with active production status.

RT0805BRE0729K4L (YAGEO): Tolerance upgrade to ±0.1% with original temperature coefficient specification (±50ppm/°C). Highest inventory availability (13249 units). Identical physical and electrical footprint. ROHS3 compliant with active production status.

4-2176093-7 (TE Connectivity Passive Product): Upgrade in both tolerance (±0.1%) and power rating (0.25W vs. 0.125W). Temperature coefficient improved to ±25ppm/°C. Height increases to 0.65mm maximum. Suitable for applications with higher power dissipation requirements or thermal margin requirements. ROHS3 compliant with active production status.

ERA-6AEB2942V (Panasonic Electronic Components): Tolerance upgrade to ±0.1% with temperature coefficient of ±25ppm/°C. Includes AEC-Q200 automotive qualification. Maintains 0.125W power rating and 0.60mm height. Suitable for automotive applications requiring automotive-grade component certification. ROHS3 compliant with active production status.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRD0729K4L replace RT0805FRE0729K4L in all applications?

A: Yes, within the constraints of PCB layout and thermal design. RT0805BRD0729K4L provides improved tolerance (±0.1% vs. ±1%) and lower temperature coefficient (±25ppm/°C vs. ±50ppm/°C). Both parts share identical 0805 package dimensions, power rating, and operating temperature range. No design changes are required.

Q: What is the difference between RT0805BRD0729K4L and RT0805BRE0729K4L?

A: Both parts offer ±0.1% tolerance upgrade. RT0805BRD0729K4L has ±25ppm/°C temperature coefficient, while RT0805BRE0729K4L maintains ±50ppm/°C. Selection depends on temperature stability requirements. RT0805BRE0729K4L has significantly higher inventory availability.

Q: When should 4-2176093-7 be selected instead of YAGEO alternatives?

A: Select 4-2176093-7 when applications require higher power dissipation capability (0.25W vs. 0.125W) or when TE Connectivity supply chain qualification is mandated. The 0.65mm maximum height must be verified against PCB assembly constraints. Tolerance and temperature coefficient specifications are equivalent to YAGEO RT0805BRD0729K4L.

Q: Is ERA-6AEB2942V suitable for non-automotive applications?

A: Yes. ERA-6AEB2942V meets all electrical and mechanical requirements for general industrial applications. AEC-Q200 automotive qualification is a superset of standard industrial specifications. The part is ROHS3 compliant with MSL 1 rating identical to other substitutes.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging, maintaining compatibility with automated assembly processes.

Q: What is the impact of height variation between 0.60mm and 0.65mm?

A: The 0.05mm height difference for 4-2176093-7 must be evaluated against PCB assembly specifications and solder reflow profile requirements. Verify with assembly equipment manufacturer if height tolerance is critical for your application.

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