RT0402FRE0791RL Equivalent & Substitute Parts

Part Overview

The RT0402FRE0791RL is a 91 Ohm ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by YAGEO. This surface mount resistor is rated for 0.063W (1/16W) power dissipation and operates across -55°C to 155°C. The part is ROHS3 compliant, active in production, and available in tape and reel packaging with MSL 1 (unlimited moisture sensitivity).

Equivalent and substitute parts are identified for applications requiring alternative manufacturers, improved tolerance specifications, or automotive-grade certifications while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	91 Ohms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Operating Temperature	-55°C to 155°C
Temperature Coefficient	±50ppm/°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Packaging Type	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for the RT0402FRE0791RL are qualified based on the following criteria:

Electrical Compatibility: All substitutes maintain 91 Ohm resistance value, identical power rating (0.063W), and compatible operating temperature range (-55°C to 155°C).

Mechanical Compatibility: All substitutes use 0402 (1005 Metric) package with identical footprint dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm) and two terminations.

Material & Composition: All substitutes are thin film resistors, maintaining the same construction type as the original part.

Tolerance Variations: Substitutes are grouped by tolerance specification:

±0.1% tolerance (tighter than original ±1%)
±0.5% tolerance (tighter than original ±1%)

Certification & Features: Substitutes include options with automotive AEC-Q200 qualification and anti-sulfur features for enhanced reliability in demanding applications.

Compliance: All substitutes maintain ROHS3 compliance, MSL 1 rating, and identical regulatory status (REACH Unaffected, ECCN EAR99).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Features	RoHS Status
RT0402FRE0791RL	YAGEO	91 Ω	±1%	0.063	±50	-55 to 155	—	ROHS3
CPF0402B91RE1	TE Connectivity	91 Ω	±0.1%	0.063	±25	-55 to 155	—	ROHS3
ERA-2AEB910X	Panasonic	91 Ω	±0.1%	0.063	±25	-55 to 155	Automotive AEC-Q200	ROHS3
ERA-2AED910X	Panasonic	91 Ω	±0.5%	0.063	±25	-55 to 155	Automotive AEC-Q200	ROHS3
RG1005P-910-B-T5	Susumu	91 Ω	±0.1%	0.063	±25	-55 to 155	Anti-Sulfur, Automotive AEC-Q200	ROHS3
RG1005P-910-D-T10	Susumu	91 Ω	±0.5%	0.063	±25	-55 to 155	Anti-Sulfur, Automotive AEC-Q200	ROHS3

Engineering Selection Recommendations

Direct Substitution (Electrical & Mechanical Equivalence): All listed substitute parts maintain identical electrical performance within the specified operating parameters and are mechanically compatible with the RT0402FRE0791RL footprint. Selection among substitutes depends on application-specific requirements:

Standard Industrial Applications: CPF0402B91RE1 (TE Connectivity) provides improved tolerance (±0.1%) and lower temperature coefficient (±25ppm/°C) compared to the original part, with equivalent ROHS3 compliance and MSL 1 rating.

Automotive Applications: ERA-2AEB910X and RG1005P-910-B-T5 are qualified to automotive AEC-Q200 standard. RG1005P-910-B-T5 additionally includes anti-sulfur protection for enhanced corrosion resistance in harsh environments.

Cost-Optimized Automotive Selection: ERA-2AED910X and RG1005P-910-D-T10 maintain AEC-Q200 qualification with ±0.5% tolerance, suitable for applications where tighter tolerance than ±1% is not required.

All substitutes are active products with confirmed inventory availability and maintain identical REACH and ECCN compliance status.

Frequently Asked Questions (FAQ)

Q: Can RT0402FRE0791RL be replaced with CPF0402B91RE1?

A: Yes. Both parts are 91 Ohm thin film resistors in 0402 package with identical power rating, operating temperature range, and footprint. CPF0402B91RE1 offers improved tolerance (±0.1% vs ±1%) and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C), making it a direct upgrade for precision applications.

Q: What is the difference between ERA-2AEB910X and ERA-2AED910X?

A: Both are Panasonic automotive-grade (AEC-Q200) 91 Ohm resistors in 0402 package. The primary difference is tolerance: ERA-2AEB910X is ±0.1% while ERA-2AED910X is ±0.5%. Both maintain identical temperature coefficient (±25ppm/°C) and operating range (-55°C to 155°C).

Q: Are Susumu RG1005P series parts compatible with the original YAGEO part?

A: Yes. RG1005P-910-B-T5 and RG1005P-910-D-T10 are mechanically and electrically compatible. Both feature anti-sulfur protection and AEC-Q200 automotive qualification. The -B-T5 variant offers ±0.1% tolerance while -D-T10 offers ±0.5% tolerance.

Q: Does package height affect substitution compatibility?

A: The original RT0402FRE0791RL has maximum seated height of 0.014" (0.35mm). Panasonic (ERA-2A series) and Susumu (RG1005P series) substitutes have maximum seated height of 0.016" (0.40mm). This 0.002" difference is within standard PCB assembly tolerances and does not affect functional compatibility or reflow soldering.

Q: Which substitute part has the best temperature stability?

A: All substitute parts have temperature coefficient of ±25ppm/°C, which is superior to the original part's ±50ppm/°C. This applies to CPF0402B91RE1, ERA-2AEB910X, ERA-2AED910X, RG1005P-910-B-T5, and RG1005P-910-D-T10.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, MSL 1 (unlimited) moisture sensitivity rating, and REACH Unaffected status, identical to the original RT0402FRE0791RL.

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