RT0603CRE07124KL Equivalent & Substitute Parts

Part Overview

The RT0603CRE07124KL is a 124 kOhms ±0.25% 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 RoHS3 compliant. Substitute parts are identified to address inventory availability, enhanced tolerance specifications, or specific application requirements such as automotive qualification or anti-sulfur protection.

Key Parameters

Parameter	Value
Resistance	124 kOhms
Tolerance	±0.25%
Power Rating	0.1W (1/10W)
Package	0603 (1608 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	RoHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Matching Parameters:

Resistance value: 124 kOhms
Package type: 0603 (1608 Metric)
Composition: Thin Film
Operating temperature range: -55°C to 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

Allowable Variations:

Tolerance: May be equal to or tighter (lower) than ±0.25%
Power rating: May be equal to or higher than 0.1W
Temperature coefficient: May be equal to or lower in absolute value
Manufacturer: Different manufacturers permitted if all mandatory parameters match

All identified substitutes meet these criteria and are electrically and mechanically compatible with the RT0603CRE07124KL.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power Rating	Temp Coeff	Package	Features
RT0603CRE07124KL	YAGEO	124 kOhms	±0.25%	0.1W	±50ppm/°C	0603	—
RT0603BRD07124KL	YAGEO	124 kOhms	±0.1%	0.1W	±25ppm/°C	0603	—
RT0603BRE07124KL	YAGEO	124 kOhms	±0.1%	0.1W	±50ppm/°C	0603	—
9-2176089-8	TE Connectivity	124 kOhms	±0.1%	0.167W	±25ppm/°C	0603	—
ERA-3AEB1243V	Panasonic	124 kOhms	±0.1%	0.1W	±25ppm/°C	0603	Automotive AEC-Q200
RG1608P-1243-B-T5	Susumu	124 kOhms	±0.1%	0.1W	±25ppm/°C	0603	Anti-Sulfur, Automotive AEC-Q200

Engineering Selection Recommendations

RT0603BRD07124KL (YAGEO): Direct upgrade within the same manufacturer series. Offers tighter tolerance (±0.1% vs ±0.25%) and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C) while maintaining identical power rating and package. Suitable for applications requiring improved stability.

RT0603BRE07124KL (YAGEO): Alternative within YAGEO RT series with ±0.1% tolerance and ±50ppm/°C temperature coefficient. Provides tolerance improvement without temperature coefficient change.

9-2176089-8 (TE Connectivity): Cross-manufacturer substitute with higher power rating (0.167W vs 0.1W) and improved tolerance and temperature coefficient. Suitable for applications with higher thermal margin requirements.

ERA-3AEB1243V (Panasonic): Automotive-qualified substitute with AEC-Q200 certification. Recommended for automotive applications requiring formal qualification documentation. Offers ±0.1% tolerance and ±25ppm/°C temperature coefficient.

RG1608P-1243-B-T5 (Susumu): Automotive-qualified substitute with AEC-Q200 certification and anti-sulfur protection. Recommended for harsh automotive environments or applications requiring sulfur resistance. Provides ±0.1% tolerance and ±25ppm/°C temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Can I substitute RT0603CRE07124KL with any of these parts without circuit redesign?

A: Yes. All listed substitutes maintain the same resistance value, package type, operating temperature range, and power rating specifications. They are electrically and mechanically compatible for direct substitution on the PCB.

Q: What is the difference between tolerance grades ±0.25% and ±0.1%?

A: Tolerance defines the maximum deviation from the nominal resistance value. ±0.1% tolerance provides tighter resistance accuracy than ±0.25%. For the 124 kOhms value, ±0.1% tolerance means the actual resistance will be within 123.876 kOhms to 124.124 kOhms, compared to 123.69 kOhms to 124.31 kOhms for ±0.25%.

Q: What does temperature coefficient ±25ppm/°C mean compared to ±50ppm/°C?

A: Temperature coefficient indicates resistance change per degree Celsius. ±25ppm/°C means the resistance changes by a maximum of 25 parts per million per °C, while ±50ppm/°C allows up to 50 ppm/°C change. Lower values indicate better stability across temperature variations.

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

A: No. AEC-Q200 qualification is specific to automotive applications. For non-automotive use, standard industrial-grade parts such as RT0603BRD07124KL or RT0603BRE07124KL are appropriate.

Q: What is the difference between the 0.1W and 0.167W power ratings?

A: Power rating indicates maximum continuous power dissipation. The 0.167W (1/6W) rating provides higher thermal capacity than 0.1W (1/10W). Parts with higher power ratings can be substituted for lower-rated parts without circuit modification, as they provide additional thermal margin.

Q: Can I use RG1608P-1243-B-T5 in place of RT0603CRE07124KL?

A: Yes. RG1608P-1243-B-T5 is mechanically and electrically compatible. It offers improved tolerance (±0.1%), lower temperature coefficient (±25ppm/°C), anti-sulfur protection, and automotive qualification. Select this part if your application benefits from these enhanced specifications.

Q: What does anti-sulfur protection mean?

A: Anti-sulfur protection refers to resistance to sulfur-containing compounds in harsh environments. This feature is relevant for automotive applications exposed to industrial pollutants or high-sulfur fuel environments.

Q: Are all these parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and MSL 1 rated, matching the compliance profile of the RT0603CRE07124KL.

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