MCR03EZPFX2743 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX2743 is a 274 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Resistance	274 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX2743 is determined by strict equivalence across the following parameters:

Resistance value: 274 kOhms
Tolerance: ±1%
Power rating: 0.1W (1/10W)
Package: 0603 (1608 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

Substitute parts are categorized into two groups:

Direct Substitutes maintain full AEC-Q200 automotive qualification and are functionally identical across all electrical and mechanical parameters.

Similar Substitutes meet all core electrical and mechanical specifications but feature alternative certifications (moisture resistant designation instead of automotive AEC-Q200 rating) or packaging formats. These parts are suitable for applications where automotive qualification is not mandatory.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Status	Packaging Type
MCR03EZPFX2743	Rohm Semiconductor	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Discontinued	Bulk
MCR03ERTF2743	Rohm Semiconductor	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Discontinued	Cut Tape / Digi-Reel
CRCW0603274KFKEA	Vishay Dale	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	Tape & Reel
ERJ-3EKF2743V	Panasonic Electronic Components	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	Tape & Reel
RMCF0603FT274K	Stackpole Electronics Inc	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	Tape & Reel
CR0603-FX-2743ELF	Bourns Inc.	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	Tape & Reel
RC0603FR-07274KL	YAGEO	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	Tape & Reel
RC1608F2743CS	Samsung Electro-Mechanics	274 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	Cut Tape

Engineering Selection Recommendations

For Automotive Applications Requiring AEC-Q200 Certification:

Select from active direct substitutes: CRCW0603274KFKEA (Vishay Dale), ERJ-3EKF2743V (Panasonic Electronic Components), or RMCF0603FT274K (Stackpole Electronics Inc). All three maintain full AEC-Q200 automotive qualification and are currently in active production status with established supply availability.

For Non-Automotive Applications:

Similar substitutes CR0603-FX-2743ELF (Bourns Inc.), RC0603FR-07274KL (YAGEO), and RC1608F2743CS (Samsung Electro-Mechanics) are suitable alternatives. These parts meet all electrical and mechanical specifications with moisture-resistant thick film composition and are available in active production status.

For Discontinued Part Replacement:

MCR03ERTF2743 from Rohm Semiconductor is a direct manufacturer alternative but is also discontinued. This part should not be selected for new designs or long-term supply requirements.

All substitute candidates are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different AEC-Q200 status in an automotive application?

A: AEC-Q200 certification is a specific automotive qualification requirement. Parts without this rating (CR0603-FX-2743ELF, RC0603FR-07274KL, RC1608F2743CS) should not be used in applications where automotive qualification is mandated by design specifications or regulatory requirements.

Q: Are there dimensional differences between substitute parts?

A: All parts use the 0603 (1608 Metric) package. Minor dimensional variations exist within tolerance: length ranges from 0.061" to 0.063" (1.55mm to 1.60mm), width from 0.031" to 0.033" (0.80mm to 0.85mm), and height from 0.020" to 0.022" (0.50mm to 0.55mm). These variations are within standard PCB design tolerances and do not affect interchangeability.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Packaging format affects handling and assembly processes. Cut Tape (CT) is suitable for manual assembly or small-volume production. Tape & Reel (TR) is optimized for automated pick-and-place assembly in high-volume manufacturing. Both formats contain identical components; selection depends on production methodology.

Q: Why is MCR03ERTF2743 listed as a substitute if it is discontinued?

A: MCR03ERTF2743 is included for reference as a direct Rohm Semiconductor alternative that maintains identical electrical specifications. However, discontinued status makes it unsuitable for new procurement. Active alternatives from other manufacturers should be prioritized.

Q: Do all substitutes have the same temperature coefficient?

A: Yes. All listed substitutes maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, matching the original MCR03EZPFX2743 specification.

Q: Is moisture resistance a critical parameter for substitution?

A: Moisture resistance designation (present in Bourns, YAGEO, and Samsung parts) indicates enhanced performance under humid conditions but is not a substitution requirement. All parts maintain MSL 1 (Unlimited) rating, indicating they do not require special moisture control during storage or handling.

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