MCR03EZPFX52R3 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX52R3 is a 52.3 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	52.3 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
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX52R3 is determined by strict equivalence across the following critical parameters:

Resistance value: 52.3 Ohms
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)

All substitute parts listed meet these electrical and mechanical specifications. Parts are grouped by manufacturer and product status (Active vs. Discontinued). Automotive AEC-Q200 certification is noted where applicable as an additional qualification level.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status
MCR03EZPFX52R3	Rohm Semiconductor	52.3 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued
MCR03ERTF52R3	Rohm Semiconductor	52.3 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Discontinued
CRCW060352R3FKEA	Vishay Dale	52.3 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active
ERJ-3EKF52R3V	Panasonic Electronic Components	52.3 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active
RMCF0603FT52R3	Stackpole Electronics Inc	52.3 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active
RC0603FR-0752R3L	YAGEO	52.3 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, select from the following active parts: CRCW060352R3FKEA (Vishay Dale), ERJ-3EKF52R3V (Panasonic Electronic Components), or RMCF0603FT52R3 (Stackpole Electronics Inc). All three maintain full automotive certification and are currently in active production status.

For non-automotive applications where AEC-Q200 certification is not required, RC0603FR-0752R3L (YAGEO) is available as an active alternative with equivalent electrical specifications and moisture-resistant thick film composition.

MCR03ERTF52R3 (Rohm Semiconductor) is electrically equivalent but lacks AEC-Q200 certification and is discontinued, making it unsuitable for new designs requiring automotive qualification.

All listed substitutes are ROHS3 compliant with MSL 1 rating and identical operating temperature ranges, ensuring direct functional replacement within the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can MCR03EZPFX52R3 be replaced with any of the listed substitutes?

A: Direct replacement is possible only when electrical specifications match exactly: 52.3 Ohms ±1%, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. All listed parts meet these criteria. For automotive applications, AEC-Q200 certification is required; select CRCW060352R3FKEA, ERJ-3EKF52R3V, or RMCF0603FT52R3.

Q: What is the difference between AEC-Q200 certified and non-certified substitutes?

A: AEC-Q200 certification indicates the component meets automotive industry reliability and quality standards. CRCW060352R3FKEA, ERJ-3EKF52R3V, and RMCF0603FT52R3 carry this certification. RC0603FR-0752R3L and MCR03ERTF52R3 do not. Use certified parts for automotive applications; non-certified parts are suitable for industrial and consumer applications.

Q: Are there dimensional differences between substitutes?

A: Minor dimensional variations exist within tolerance. MCR03EZPFX52R3, MCR03ERTF52R3, ERJ-3EKF52R3V, and RC0603FR-0752R3L measure 0.063" L × 0.031" W (1.60mm × 0.80mm). CRCW060352R3FKEA measures 0.061" L × 0.033" W (1.55mm × 0.85mm). RMCF0603FT52R3 measures 0.061" L × 0.031" W (1.55mm × 0.80mm). All fit 0603 package footprints; verify PCB layout clearances for tight spacing applications.

Q: Which substitute has the best availability?

A: ERJ-3EKF52R3V (Panasonic) shows highest inventory at 949,859 pieces. CRCW060352R3FKEA (Vishay Dale) has 70,776 pieces. RMCF0603FT52R3 (Stackpole) has 26,501 pieces. All are in active production and readily available.

Q: Is moisture resistance a factor in substitution?

A: All listed parts have MSL 1 (Unlimited) rating. RC0603FR-0752R3L is specifically noted as moisture resistant. This feature does not affect substitution eligibility but may provide additional protection in high-humidity environments.

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