RT0805FRE07549RL Equivalent & Substitute Parts

Part Overview

The RT0805FRE07549RL is a 549 Ohm ±1% thin film chip resistor in 0805 (2012 Metric) package format, rated for 0.125W (1/8W) power dissipation. Manufactured by YAGEO and currently in active production status, this component is ROHS3 compliant with MSL 1 rating. Substitute parts are identified to provide design flexibility when the primary part is unavailable or when design requirements necessitate enhanced tolerance, power rating, or automotive qualification.

Key Parameters

Parameter	Value
Resistance	549 Ohms
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 is determined by the following criteria:

Primary Substitution Criteria (Must Match):

Resistance value: 549 Ohms
Package / Case: 0805 (2012 Metric)
Composition: Thin Film
Operating temperature range: -55°C ~ 155°C minimum
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Substitution Parameters (May Vary):

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
Automotive qualification: Optional enhancement (AEC-Q200)

All identified substitute parts maintain identical resistance, package format, and operating temperature specifications while offering improvements in tolerance, power handling, or automotive-grade certification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Temp Coeff (ppm/°C)	Package	Features	RoHS Status
RT0805FRE07549RL	YAGEO	549 Ω	±1%	0.125W	±50	0805	—	ROHS3
RT0805BRD07549RL	YAGEO	549 Ω	±0.1%	0.125W	±25	0805	—	ROHS3
9-2176091-3	TE Connectivity	549 Ω	±0.1%	0.25W	±25	0805	—	ROHS3
ERA-6AEB5490V	Panasonic	549 Ω	±0.1%	0.125W	±25	0805	AEC-Q200	ROHS3
RG2012P-5490-D-T5	Susumu	549 Ω	±0.5%	0.125W	±25	0805	Anti-Sulfur, AEC-Q200	ROHS3

Engineering Selection Recommendations

RT0805BRD07549RL (YAGEO): Direct upgrade from the primary part. Identical power rating and package with improved tolerance (±0.1% vs ±1%) and reduced temperature coefficient (±25ppm/°C vs ±50ppm/°C). Maintains same manufacturer and series continuity. Suitable for applications requiring tighter tolerance specifications.

9-2176091-3 (TE Connectivity): Provides doubled power rating (0.25W vs 0.125W) with ±0.1% tolerance and ±25ppm/°C temperature coefficient. Identical package and resistance. Height increase of 0.002" (0.05mm) requires verification of PCB layout clearance. Recommended for designs with higher thermal stress or margin requirements.

ERA-6AEB5490V (Panasonic): Automotive-grade AEC-Q200 certified component with ±0.1% tolerance and ±25ppm/°C temperature coefficient. Maintains 0.125W power rating and 0805 package. Suitable for automotive and high-reliability applications where AEC-Q200 qualification is required.

RG2012P-5490-D-T5 (Susumu): Automotive-grade AEC-Q200 certified with anti-sulfur coating. Tolerance of ±0.5% is wider than primary part but tighter than standard industrial grades. Temperature coefficient ±25ppm/°C. Lowest profile height (0.020" vs 0.024"). Recommended for automotive applications in corrosive environments.

All substitute parts maintain ROHS3 compliance and MSL 1 rating. Selection should be based on application requirements for tolerance, power dissipation, automotive qualification, and environmental resistance.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRD07549RL be used as a direct replacement for RT0805FRE07549RL?

A: Yes. Both parts share identical resistance (549 Ω), power rating (0.125W), package (0805), and operating temperature range (-55°C ~ 155°C). RT0805BRD07549RL offers improved tolerance and temperature coefficient specifications.

Q: What is the primary difference between 9-2176091-3 and the main part?

A: The 9-2176091-3 provides doubled power rating (0.25W vs 0.125W) with improved tolerance (±0.1% vs ±1%) and temperature coefficient (±25ppm/°C vs ±50ppm/°C). Physical height increases by 0.002" (0.05mm), requiring PCB layout verification.

Q: When should ERA-6AEB5490V be selected over other substitutes?

A: ERA-6AEB5490V is the appropriate choice when AEC-Q200 automotive qualification is a design requirement. It provides ±0.1% tolerance and ±25ppm/°C temperature coefficient in the same 0.125W, 0805 package format.

Q: What advantage does RG2012P-5490-D-T5 offer in automotive applications?

A: RG2012P-5490-D-T5 combines AEC-Q200 certification with anti-sulfur coating, providing enhanced corrosion resistance in harsh automotive environments. It maintains ±0.5% tolerance and ±25ppm/°C temperature coefficient with the lowest profile height (0.020").

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the primary part's environmental certifications.

Q: Can the 0805 package be mixed with other package sizes in the same design?

A: No. All substitute parts specified maintain the 0805 (2012 Metric) package format. Package substitution requires separate engineering evaluation and is outside the scope of this equivalent parts list.

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