RT0402FRE077K87L Equivalent & Substitute Parts

Part Overview

The RT0402FRE077K87L is a 7.87 kOhms ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by YAGEO. This component is actively produced and widely used in precision analog circuits, signal conditioning, and measurement applications where moderate tolerance and stable temperature performance are required. Substitute parts are identified to address inventory availability, performance upgrades, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	7.87 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Requirements (Must Match):

Resistance value: 7.87 kOhms
Package: 0402 (1005 Metric)
Composition: Thin Film
Power rating: 0.063W (1/16W)
Operating temperature range: -55°C to 155°C minimum
RoHS3 compliance

Allowable Variations:

Tolerance: May be equal to or tighter than ±1% (±0.5%, ±0.1% are acceptable upgrades)
Temperature coefficient: May be equal to or lower than ±50ppm/°C (±25ppm/°C, ±10ppm/°C are acceptable upgrades)
Height: Seated height up to 0.016" (0.40mm) is acceptable for 0402 package
Certifications: Additional certifications (AEC-Q200) do not disqualify substitution

All identified substitute parts meet these criteria and are direct functional replacements for the RT0402FRE077K87L.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Temp Coeff	Op Temp Range	Height (Max)	RoHS	Inventory
RT0402FRE077K87L	YAGEO	7.87 kΩ	±1%	0.063W	±50ppm/°C	-55 to 155°C	0.014"	ROHS3	1104 Pcs
RT0402BRD077K87L	YAGEO	7.87 kΩ	±0.1%	0.063W	±25ppm/°C	-55 to 155°C	0.014"	ROHS3	1059 Pcs
RT0402DRE077K87L	YAGEO	7.87 kΩ	±0.5%	0.063W	±50ppm/°C	-55 to 155°C	0.014"	ROHS3	3454 Pcs
CPF0402B7K87E1	TE Connectivity	7.87 kΩ	±0.1%	0.063W	±25ppm/°C	-55 to 155°C	0.014"	ROHS3	2338 Pcs
RG1005P-7871-B-T5	Susumu	7.87 kΩ	±0.1%	0.063W	±25ppm/°C	-55 to 155°C	0.016"	ROHS3	6071 Pcs
RN73C1E7K87BTDF	TE Connectivity	7.87 kΩ	±0.1%	0.063W	±10ppm/°C	-55 to 155°C	0.014"	ROHS3	741 Pcs
RR0510P-7871-D	Susumu	7.87 kΩ	±0.5%	0.063W	±25ppm/°C	-55 to 125°C	0.016"	ROHS3	10741 Pcs

Engineering Selection Recommendations

Direct Replacement (Same Tolerance): RT0402DRE077K87L offers the same ±1% tolerance as the original part with identical temperature coefficient and operating range. This part provides the highest inventory availability (3454 Pcs) and is the preferred substitute when tolerance specifications must remain unchanged.

Performance Upgrade (Tighter Tolerance): RT0402BRD077K87L, CPF0402B7K87E1, RG1005P-7871-B-T5, and RN73C1E7K87BTDF all provide ±0.1% tolerance with improved temperature stability. These parts are suitable for applications requiring enhanced precision without design modification. RN73C1E7K87BTDF offers the lowest temperature coefficient (±10ppm/°C) for maximum stability in temperature-sensitive circuits.

Automotive-Qualified Alternative: RG1005P-7871-B-T5 carries AEC-Q200 certification and anti-sulfur composition, making it suitable for automotive and harsh environment applications. This part maintains ±0.1% tolerance and ±25ppm/°C temperature coefficient.

Extended Inventory Option: RR0510P-7871-D provides the largest available inventory (10741 Pcs) with ±0.5% tolerance. Note that this part has a reduced upper operating temperature limit of 125°C compared to the original 155°C specification.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can RT0402DRE077K87L be used as a direct replacement for RT0402FRE077K87L?

A: Yes. Both parts have identical resistance (7.87 kOhms), package (0402), power rating (0.063W), and operating temperature range (-55 to 155°C). The tolerance difference (±0.5% vs ±1%) represents an improvement and does not affect compatibility. Temperature coefficient remains at ±50ppm/°C.

Q: What is the difference between the YAGEO RT series and TE Connectivity CPF/RN series?

A: All parts meet the same electrical and mechanical specifications for this application. The primary differences are manufacturer, series designation, and in some cases, enhanced performance parameters (tighter tolerance, lower temperature coefficient). Selection can be based on inventory availability, supply chain preference, or specific performance requirements.

Q: Is RG1005P-7871-B-T5 suitable for automotive applications?

A: Yes. RG1005P-7871-B-T5 carries AEC-Q200 certification and includes anti-sulfur composition, making it qualified for automotive use. It maintains the same electrical performance as other ±0.1% tolerance alternatives.

Q: Why does RR0510P-7871-D have a lower maximum operating temperature?

A: RR0510P-7871-D is specified for -55 to 125°C operation, compared to -55 to 155°C for other parts. This part remains compatible with most applications but should not be used in designs requiring operation above 125°C.

Q: Can I use a ±0.1% tolerance part in place of a ±1% tolerance specification?

A: Yes. Tighter tolerance is always acceptable as a substitute. Parts with ±0.1% tolerance (RT0402BRD077K87L, CPF0402B7K87E1, RG1005P-7871-B-T5, RN73C1E7K87BTDF) provide improved accuracy and are direct upgrades for applications originally specified with ±1% tolerance.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient indicates resistance change per degree Celsius. Lower values indicate greater stability across temperature ranges. RN73C1E7K87BTDF (±10ppm/°C) provides superior stability compared to parts rated at ±25ppm/°C or ±50ppm/°C. Selection depends on circuit sensitivity to resistance drift over temperature.

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

A: Yes. All substitute parts are supplied in Tape & Reel (TR) packaging in 0402 (1005 Metric) package. Physical dimensions are compatible, with maximum seated heights ranging from 0.014" to 0.016", both acceptable for standard 0402 PCB assembly.

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