MCR03EZPFX1050 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1050 is a 105 Ohms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor 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	105 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 MCR03EZPFX1050 is determined by strict equivalence across the following parameters: resistance value (105 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 listed maintain these core electrical and mechanical specifications.

Substitute parts are grouped into two categories:

Direct Substitutes maintain full automotive AEC-Q200 certification and identical dimensional specifications to the original part.

Similar Substitutes meet all electrical parameters and package requirements but differ in specific features (moisture resistance designation) or dimensional tolerances within acceptable ranges for 0603 package standards.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Composition	Temp Coeff	Operating Temp	AEC-Q200	Product Status
MCR03EZPFX1050	Rohm Semiconductor	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued
MCR03ERTF1050	Rohm Semiconductor	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	No	Discontinued
CRCW0603105RFKEA	Vishay Dale	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	Yes	Active
ERJ-3EKF1050V	Panasonic Electronic Components	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	Yes	Active
RMCF0603FT105R	Stackpole Electronics Inc	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	Yes	Active
CR0603-FX-1050ELF	Bourns Inc.	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	No	Active
RC0603FR-07105RL	YAGEO	105 Ω	±1%	0.1	0603	Thick Film	±100ppm/°C	-55°C ~ 155°C	No	Active

Engineering Selection Recommendations

For automotive applications requiring AEC-Q200 compliance, select from the following active direct substitutes:

CRCW0603105RFKEA (Vishay Dale) - Active status with full AEC-Q200 certification and high inventory availability (53,545 pcs).

ERJ-3EKF1050V (Panasonic Electronic Components) - Active status with full AEC-Q200 certification and substantial inventory (44,321 pcs).

RMCF0603FT105R (Stackpole Electronics Inc) - Active status with full AEC-Q200 certification and largest inventory availability (222,601 pcs).

For non-automotive applications or where AEC-Q200 is not required, active alternatives include CR0603-FX-1050ELF (Bourns Inc.) and RC0603FR-07105RL (YAGEO), both with moisture-resistant thick film composition.

MCR03ERTF1050 (Rohm Semiconductor) is a direct Rohm alternative but is discontinued, making it unsuitable for new designs despite electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can MCR03EZPFX1050 be replaced with any of the listed substitutes in automotive applications?

A: Only CRCW0603105RFKEA, ERJ-3EKF1050V, and RMCF0603FT105R maintain AEC-Q200 automotive certification. Other substitutes lack this certification and are suitable only for non-automotive applications.

Q: Are there dimensional differences between the main part and substitutes?

A: All substitutes use the 0603 (1608 Metric) package. Minor dimensional variations exist within standard tolerances: length ranges from 0.061" to 0.063" (1.55mm to 1.60mm) and height from 0.020" to 0.022" (0.50mm to 0.55mm). These variations are within acceptable PCB assembly tolerances.

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

A: Direct substitutes (MCR03ERTF1050, CRCW0603105RFKEA, ERJ-3EKF1050V, RMCF0603FT105R) maintain identical or equivalent feature sets to the original part. Similar substitutes (CR0603-FX-1050ELF, RC0603FR-07105RL) meet all electrical and package requirements but feature moisture-resistant designation instead of automotive certification.

Q: Which substitute offers the best availability?

A: RMCF0603FT105R (Stackpole Electronics Inc) has the highest inventory at 222,601 pcs, followed by CRCW0603105RFKEA (Vishay Dale) at 53,545 pcs and ERJ-3EKF1050V (Panasonic) at 44,321 pcs.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitutes are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original MCR03EZPFX1050 specifications.

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