RT0603FRE07845RL Equivalent & Substitute Parts

Part Overview

The RT0603FRE07845RL is a 845 Ohms ±1% thin film chip resistor in 0603 (1608 Metric) package rated at 0.1W (1/10W) power dissipation. Manufactured by YAGEO under the RT series, this component is Active status with 1092 pieces currently in stock. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and operates across -55°C to 155°C temperature range.

Substitute parts are identified when they maintain identical resistance value (845 Ohms), package format (0603/1608 Metric), power rating (0.1W minimum), and operating temperature range while offering improved tolerance specifications or enhanced reliability features such as automotive qualification or anti-sulfur protection.

Key Parameters

Parameter	Value
Resistance	845 Ohms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thin Film
Operating Temperature	-55°C ~ 155°C
Temperature Coefficient	±50ppm/°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory criteria:

Resistance value must equal 845 Ohms
Package format must be 0603 (1608 Metric)
Power rating must be ≥0.1W
Operating temperature range must encompass -55°C to 155°C
Composition must be thin film
RoHS3 compliance required
MSL rating must be 1 (Unlimited)

Substitute parts are grouped into two categories based on tolerance improvement and additional certifications:

Category A (Tolerance Upgrade): Parts with ±0.1% or ±0.5% tolerance, representing improved precision over the ±1% specification of the main part.

Category B (Enhanced Reliability): Parts with automotive AEC-Q200 qualification or anti-sulfur protection features, suitable for applications requiring extended reliability assurance.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Temp Coeff	Package	Features	Inventory
RT0603FRE07845RL	YAGEO	845 Ω	±1%	0.1W	±50ppm/°C	0603	—	1092 pcs
RT0603BRD07845RL	YAGEO	845 Ω	±0.1%	0.1W	±25ppm/°C	0603	—	2848 pcs
RT0603DRD07845RL	YAGEO	845 Ω	±0.5%	0.1W	±25ppm/°C	0603	—	831 pcs
ERA-3AEB8450V	Panasonic Electronic Components	845 Ω	±0.1%	0.1W	±25ppm/°C	0603	Automotive AEC-Q200	39343 pcs
RG1608P-8450-B-T5	Susumu	845 Ω	±0.1%	0.1W	±25ppm/°C	0603	Anti-Sulfur, Automotive AEC-Q200	3752 pcs
RP73PF1J845RBTDF	TE Connectivity Passive Product	845 Ω	±0.1%	0.167W	±25ppm/°C	0603	—	994 pcs

Engineering Selection Recommendations

RT0603BRD07845RL (YAGEO): Direct upgrade from RT0603FRE07845RL within the same manufacturer series. Provides ±0.1% tolerance and ±25ppm/°C temperature coefficient with higher inventory availability (2848 pcs). Maintains identical package, power rating, and operating temperature range. Suitable for applications requiring improved precision without additional environmental certifications.

RT0603DRD07845RL (YAGEO): Mid-tolerance alternative offering ±0.5% specification with ±25ppm/°C temperature coefficient. Maintains full compatibility with RT0603FRE07845RL footprint and electrical requirements. Lower inventory (831 pcs) compared to other options.

ERA-3AEB8450V (Panasonic Electronic Components): ±0.1% tolerance thin film resistor with Automotive AEC-Q200 qualification. Highest inventory availability (39343 pcs). Recommended for automotive applications or designs requiring extended reliability assurance. Identical operating temperature range and package format.

RG1608P-8450-B-T5 (Susumu): ±0.1% tolerance with dual certifications: Automotive AEC-Q200 and anti-sulfur protection. Suitable for harsh environment applications or automotive designs requiring sulfur resistance. Maintains 0.1W power rating and 0603 package compatibility.

RP73PF1J845RBTDF (TE Connectivity Passive Product): ±0.1% tolerance with elevated power rating (0.167W/1/6W). Provides additional thermal margin for applications with higher power dissipation requirements. Maintains 0603 package and full operating temperature range compatibility.

Frequently Asked Questions (FAQ)

Q: Can RT0603BRD07845RL directly replace RT0603FRE07845RL in existing designs?

A: Yes. Both parts share identical 845 Ohms resistance, 0.1W power rating, 0603 package format, and -55°C to 155°C operating temperature range. The RT0603BRD07845RL offers improved ±0.1% tolerance and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C), making it a direct upgrade with no design modifications required.

Q: What is the difference between tolerance specifications ±1%, ±0.5%, and ±0.1%?

A: Tolerance defines the maximum deviation from the nominal 845 Ohm value. ±1% allows ±8.45 Ohm deviation (837–853 Ohms), ±0.5% allows ±4.225 Ohm deviation (840.775–849.225 Ohms), and ±0.1% allows ±0.845 Ohm deviation (844.155–845.845 Ohms). Tighter tolerances are required for precision analog circuits, measurement equipment, and high-accuracy signal conditioning applications.

Q: Are automotive-qualified parts (AEC-Q200) necessary for non-automotive applications?

A: Automotive AEC-Q200 qualification is not required for non-automotive designs. However, these parts undergo extended reliability testing and environmental stress screening, making them suitable for mission-critical applications, industrial equipment, or designs requiring enhanced quality assurance regardless of end-market.

Q: What does anti-sulfur protection (RG1608P-8450-B-T5) provide?

A: Anti-sulfur protection prevents corrosion of component terminations and internal elements when exposed to hydrogen sulfide or sulfur-containing environments. This feature is essential for applications in oil and gas facilities, geothermal installations, or industrial environments with atmospheric sulfur contamination.

Q: Can RP73PF1J845RBTDF (0.167W) replace the 0.1W rated main part?

A: Yes, with consideration for thermal design. The higher power rating (0.167W vs 0.1W) provides additional thermal margin and allows the component to dissipate more power without exceeding temperature limits. This is beneficial in applications where resistor power dissipation approaches the 0.1W specification. No design changes are required; the higher rating only provides additional safety margin.

Q: What is the significance of temperature coefficient (±50ppm/°C vs ±25ppm/°C)?

A: Temperature coefficient defines how much the resistance value changes per degree Celsius. ±50ppm/°C means the resistance changes by 0.005% per °C, while ±25ppm/°C means 0.0025% per °C. Lower temperature coefficients are critical for precision applications operating across wide temperature ranges, such as instrumentation, medical devices, and aerospace systems.

Q: Are all substitute parts ROHS3 compliant and MSL 1 rated?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing processes and storage requirements without special handling or baking procedures.

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