MCR03EZPFX2940 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX2940 is a 294 Ohms ±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	294 Ohms
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX2940 is determined by strict equivalence across the following parameters: resistance value (294 Ohms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All substitute parts must maintain identical electrical specifications and package dimensions to ensure direct functional replacement without circuit redesign.

Substitute parts are grouped into two categories:

Direct Substitutes maintain full AEC-Q200 automotive qualification matching the original part's feature set.

Similar Substitutes meet all core electrical and mechanical parameters but feature alternative certifications (moisture resistance instead of automotive rating) or minor dimensional variations within acceptable tolerances.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	Features	Product Status	RoHS
MCR03EZPFX2940	Rohm Semiconductor	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Discontinued	ROHS3
MCR03ERTF2940	Rohm Semiconductor	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Thick Film	Discontinued	ROHS3
CRCW0603294RFKEA	Vishay Dale	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	ROHS3
ERJ-3EKF2940V	Panasonic Electronic Components	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	ROHS3
RMCF0603FT294R	Stackpole Electronics Inc	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	ROHS3
CR0603-FX-2940ELF	Bourns Inc.	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	ROHS3
RC0603FR-07294RL	YAGEO	294 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	ROHS3

Engineering Selection Recommendations

For applications requiring automotive qualification compliance, select from the direct substitutes: CRCW0603294RFKEA (Vishay Dale), ERJ-3EKF2940V (Panasonic Electronic Components), or RMCF0603FT294R (Stackpole Electronics Inc). All three parts maintain active product status and full AEC-Q200 certification, ensuring continued supply and compliance with automotive standards.

For non-automotive applications where moisture resistance is the primary requirement, CR0603-FX-2940ELF (Bourns Inc.) and RC0603FR-07294RL (YAGEO) provide equivalent electrical performance with active product status and ROHS3 compliance.

MCR03ERTF2940 (Rohm Semiconductor) is electrically equivalent but shares discontinued status with the original part, limiting its suitability for long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can MCR03EZPFX2940 be directly replaced with any of these substitutes?

A: Yes. All listed substitutes maintain identical resistance (294 Ohms), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Direct PCB-level substitution is possible without circuit modification.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes (CRCW0603294RFKEA, ERJ-3EKF2940V, RMCF0603FT294R) carry AEC-Q200 automotive certification matching the original part. Similar substitutes (CR0603-FX-2940ELF, RC0603FR-07294RL) meet all electrical and mechanical specifications but feature moisture resistance certification instead of automotive qualification.

Q: Are there dimensional differences between substitutes?

A: Dimensional variations exist within acceptable tolerances. Vishay Dale CRCW0603294RFKEA measures 0.061" L x 0.033" W with 0.020" max height. Rohm, Panasonic, Bourns, and YAGEO parts measure 0.063" L x 0.031" W with 0.022" max height. These variations remain within 0603 package specifications and do not affect PCB layout compatibility.

Q: Which substitute offers the best supply availability?

A: RC0603FR-07294RL (YAGEO) and RMCF0603FT294R (Stackpole Electronics Inc) demonstrate the highest inventory levels at 79,779 and 76,456 pieces respectively, providing superior supply assurance.

Q: Can I use similar substitutes in automotive applications?

A: Similar substitutes lack AEC-Q200 certification. Use direct substitutes (CRCW0603294RFKEA, ERJ-3EKF2940V, RMCF0603FT294R) for automotive applications requiring compliance with automotive qualification standards.

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