RT0603BRE07124KL Equivalent & Substitute Parts

Part Overview

The RT0603BRE07124KL is a 124 kOhms ±0.1% 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 actively produced and widely used in precision analog circuits requiring tight tolerance specifications. Finding equivalent and substitute parts becomes necessary when managing supply chain continuity, optimizing inventory across multiple suppliers, or addressing specific application requirements such as automotive qualification or enhanced environmental performance.

Key Parameters

Parameter	Value
Resistance	124 kOhms
Tolerance	±0.1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thin Film
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the RT0603BRE07124KL is determined by the following critical parameters:

Resistance Value: Must be 124 kOhms
Tolerance: Must be ±0.1%
Package: Must be 0603 (1608 Metric)
Composition: Must be Thin Film
Operating Temperature Range: Must support -55°C ~ 155°C minimum
RoHS Compliance: Must be ROHS3 Compliant
Moisture Sensitivity: Must be MSL 1 or equivalent

All substitute parts listed meet these core electrical and mechanical requirements. Variations in power rating (0.1W vs. 0.167W), temperature coefficient (±50ppm/°C vs. ±25ppm/°C), and additional features (automotive qualification, anti-sulfur coating) represent upgrades or enhanced specifications that do not prevent substitution but may offer improved performance characteristics for specific applications.

Parameter Comparison

Parameter	RT0603BRE07124KL (YAGEO)	RT0603BRD07124KL (YAGEO)	9-2176089-8 (TE Connectivity)	ERA-3AEB1243V (Panasonic)	RG1608P-1243-B-T5 (Susumu)
Resistance	124 kOhms	124 kOhms	124 kOhms	124 kOhms	124 kOhms
Tolerance	±0.1%	±0.1%	±0.1%	±0.1%	±0.1%
Power Rating	0.1W (1/10W)	0.1W (1/10W)	0.167W (1/6W)	0.1W (1/10W)	0.1W (1/10W)
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Composition	Thin Film	Thin Film	Thin Film	Thin Film	Thin Film
Temperature Coefficient	±50ppm/°C	±25ppm/°C	±25ppm/°C	±25ppm/°C	±25ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Qualification	—	—	—	AEC-Q200	AEC-Q200
Special Features	—	—	—	—	Anti-Sulfur

Engineering Selection Recommendations

Direct Substitutes (Same Specifications)

RT0603BRD07124KL (YAGEO) is a direct equivalent with identical electrical specifications to the RT0603BRE07124KL. The primary difference is an improved temperature coefficient of ±25ppm/°C versus ±50ppm/°C, representing enhanced stability. Both parts are ROHS3 compliant, actively produced, and suitable for direct replacement in existing designs.

Upgraded Substitutes with Enhanced Performance

ERA-3AEB1243V (Panasonic) and RG1608P-1243-B-T5 (Susumu) both feature automotive AEC-Q200 qualification and improved temperature coefficient specifications (±25ppm/°C). These parts are suitable for applications requiring automotive-grade reliability. The Susumu RG1608P-1243-B-T5 additionally includes anti-sulfur coating for enhanced environmental resistance. Both maintain full electrical and mechanical compatibility with the original part.

Higher Power Rating Alternative

9-2176089-8 (TE Connectivity) provides a higher power rating of 0.167W (1/6W) while maintaining all other critical specifications. This part is suitable for applications where increased power dissipation capability is beneficial, though it is not required for designs originally specified for 0.1W operation. All parts are actively produced and ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can I substitute RT0603BRD07124KL for RT0603BRE07124KL?

A: Yes. RT0603BRD07124KL is a direct substitute with identical resistance, tolerance, power rating, and package specifications. The improved temperature coefficient (±25ppm/°C vs. ±50ppm/°C) represents enhanced performance without compatibility concerns.

Q: Are automotive-qualified parts (ERA-3AEB1243V, RG1608P-1243-B-T5) suitable for non-automotive applications?

A: Yes. Automotive qualification (AEC-Q200) indicates enhanced reliability testing and environmental performance. These parts are fully compatible with non-automotive designs and offer superior stability characteristics.

Q: Can I use 9-2176089-8 (0.167W) in place of the original 0.1W part?

A: Yes. The higher power rating provides additional thermal margin and does not create compatibility issues. The part is suitable for direct substitution in circuits originally designed for 0.1W operation.

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

A: Yes. All listed substitutes are supplied in Tape & Reel (TR) packaging in 0603 (1608 Metric) case format, ensuring compatibility with standard pick-and-place assembly equipment.

Q: What is the significance of the temperature coefficient difference?

A: Temperature coefficient (ppm/°C) indicates resistance value drift across the operating temperature range. Lower values (±25ppm/°C) represent improved stability. For precision analog circuits, the upgraded parts with ±25ppm/°C offer tighter tolerance maintenance across temperature extremes.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed substitutes meet ROHS3 compliance requirements and are suitable for applications subject to RoHS regulations.

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