RT0402FRE07124RL Equivalent & Substitute Parts

Part Overview

The RT0402FRE07124RL is a 124 Ohms ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by YAGEO. This surface mount device is rated for 0.063W (1/16W) power dissipation and operates across -55°C to 155°C. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating, making it suitable for general industrial and commercial applications. Substitute parts are identified where electrical specifications, mechanical compatibility, and compliance certifications align with the original component's functional requirements.

Key Parameters

Parameter	Value
Resistance	124 Ohms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 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:

Resistance Value: Must be 124 Ohms
Package Compatibility: Must be 0402 (1005 Metric) form factor
Composition: Thin film construction
Power Rating: Minimum 0.063W (1/16W)
Operating Temperature Range: Must cover -55°C to 155°C
Compliance: ROHS3 compliant, MSL 1 rating
Tolerance: ±1% or better (tighter tolerance is acceptable)

All identified substitute parts meet these core electrical and mechanical requirements. Tolerance improvements and enhanced temperature coefficient specifications represent performance upgrades rather than functional deviations.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Height Max (mm)	RoHS Status
RT0402FRE07124RL	YAGEO	124 Ω	±1%	0.063	±50	-55 to 155	0402	0.35	ROHS3
RT0402BRE07124RL	YAGEO	124 Ω	±0.1%	0.063	±50	-55 to 155	0402	0.35	ROHS3
CPF0402B124RE1	TE Connectivity Passive Product	124 Ω	±0.1%	0.063	±25	-55 to 155	0402	0.35	ROHS3
ERA-2AEB1240X	Panasonic Electronic Components	124 Ω	±0.1%	0.063	±25	-55 to 155	0402	0.40	ROHS3
RG1005P-1240-B-T5	Susumu	124 Ω	±0.1%	0.063	±25	-55 to 155	0402	0.40	ROHS3

Engineering Selection Recommendations

Direct Substitution (Electrical Equivalence)

RT0402BRE07124RL serves as a direct electrical substitute with improved tolerance specification (±0.1% versus ±1%). Both parts are manufactured by YAGEO, share identical package dimensions, power rating, and operating temperature range. This substitution is suitable for applications where tighter tolerance is beneficial or required.

Enhanced Performance Substitutes

CPF0402B124RE1 (TE Connectivity) and RG1005P-1240-B-T5 (Susumu) provide improved temperature coefficient performance (±25ppm/°C versus ±50ppm/°C) alongside tighter tolerance. Both maintain full ROHS3 compliance and MSL 1 rating. CPF0402B124RE1 is suitable for general precision applications, while RG1005P-1240-B-T5 includes anti-sulfur and automotive AEC-Q200 qualification, making it appropriate for automotive and harsh environment applications.

Automotive-Qualified Alternative

ERA-2AEB1240X (Panasonic) is qualified to automotive AEC-Q200 standard with ±0.1% tolerance and ±25ppm/°C temperature coefficient. Maximum seated height is 0.40mm (versus 0.35mm for other options). This part is specified for automotive and mission-critical applications requiring automotive-grade reliability.

All substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, ensuring compatibility with standard PCB assembly and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can RT0402BRE07124RL replace RT0402FRE07124RL in any application?

A: Yes. RT0402BRE07124RL is electrically and mechanically compatible. The ±0.1% tolerance is tighter than the original ±1%, making it suitable for all applications where the original part functions. No circuit redesign is required.

Q: What is the difference between standard and automotive-qualified substitutes?

A: ERA-2AEB1240X and RG1005P-1240-B-T5 carry AEC-Q200 automotive qualification, indicating compliance with automotive reliability and environmental stress testing standards. These parts are specified for automotive, aerospace, and mission-critical applications. Standard industrial parts (RT0402BRE07124RL, CPF0402B124RE1) are suitable for general commercial and industrial use.

Q: Does the 0.40mm height of ERA-2AEB1240X and RG1005P-1240-B-T5 affect PCB assembly?

A: The 0.05mm height difference (0.40mm versus 0.35mm) is within standard PCB assembly tolerances and does not affect reflow soldering or component placement. Verify with your assembly process specifications if height-constrained applications are involved.

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 equipment and standard component handling procedures.

Q: Which substitute offers the best temperature stability?

A: CPF0402B124RE1, ERA-2AEB1240X, and RG1005P-1240-B-T5 all provide ±25ppm/°C temperature coefficient, compared to ±50ppm/°C for the original RT0402FRE07124RL. This represents a 50% improvement in temperature stability across the -55°C to 155°C operating range.

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