MCR03EZPFX46R4 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX46R4 is a 46.4 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	46.4 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	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX46R4 is determined by strict equivalence across the following critical parameters:

Resistance Value: 46.4 Ohms (exact match required)
Tolerance: ±1% (no deviation)
Power Rating: 0.1W / 1/10W (no reduction)
Package: 0603 (1608 Metric) (physical and electrical compatibility)
Composition: Thick Film (electrical characteristics)
Temperature Coefficient: ±100ppm/°C (thermal stability)
Operating Temperature: -55°C to 155°C (environmental capability)
Compliance: RoHS3 and REACH requirements

All substitute parts listed meet these parameters. Direct substitutes maintain full AEC-Q200 automotive qualification. The RC0603FR-0746R4L from YAGEO is classified as a similar substitute due to moisture-resistant features rather than full automotive AEC-Q200 rating, but maintains all electrical and thermal specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status	Inventory
MCR03EZPFX46R4	Rohm Semiconductor	46.4 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Discontinued	853 Pcs
CRCW060346R4FKEA	Vishay Dale	46.4 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	23755 Pcs
ERJ-3EKF46R4V	Panasonic Electronic Components	46.4 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	50426 Pcs
RMCF0603FT46R4	Stackpole Electronics Inc	46.4 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	5639 Pcs
RC0603FR-0746R4L	YAGEO	46.4 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	96206 Pcs

Engineering Selection Recommendations

Direct Substitutes (Full AEC-Q200 Compliance):

CRCW060346R4FKEA (Vishay Dale): Active product with highest inventory availability (23755 Pcs). Maintains all automotive specifications and RoHS3 compliance. Suitable for direct replacement in automotive applications.
ERJ-3EKF46R4V (Panasonic Electronic Components): Active product with extensive inventory (50426 Pcs). Full AEC-Q200 rating and identical electrical specifications. Recommended for high-volume production requirements.
RMCF0603FT46R4 (Stackpole Electronics Inc): Active product with AEC-Q200 qualification. Lower inventory (5639 Pcs) but maintains all required specifications for automotive use.

Similar Substitute (Non-Automotive Rated):

RC0603FR-0746R4L (YAGEO): Active product with highest inventory (96206 Pcs). Moisture-resistant thick film composition meets all electrical and thermal parameters but lacks AEC-Q200 automotive certification. Suitable for non-automotive applications or where automotive qualification is not mandated.

Selection should prioritize active products with AEC-Q200 certification for automotive applications. For non-automotive applications, YAGEO RC0603FR-0746R4L offers superior availability.

Frequently Asked Questions (FAQ)

Q: Can RC0603FR-0746R4L be used in automotive applications?

A: RC0603FR-0746R4L meets all electrical specifications (46.4 Ω ±1%, 0.1W, 0603 package, ±100ppm/°C, -55 to 155°C) but lacks AEC-Q200 automotive certification. Use only in non-automotive applications or where automotive qualification is not a design requirement.

Q: Are all substitute parts physically compatible with the original MCR03EZPFX46R4?

A: All listed parts use the 0603 (1608 Metric) package. Physical dimensions vary slightly (length 1.55-1.60mm, width 0.80-0.85mm, height 0.50-0.55mm) but remain within standard 0603 footprint tolerances for PCB assembly compatibility.

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

A: Direct substitutes (CRCW060346R4FKEA, ERJ-3EKF46R4V, RMCF0603FT46R4) maintain full AEC-Q200 automotive qualification. The similar substitute (RC0603FR-0746R4L) meets electrical specifications but is rated for moisture resistance rather than automotive standards.

Q: Which substitute offers the best inventory availability?

A: RC0603FR-0746R4L (YAGEO) has the highest inventory at 96206 Pcs. Among AEC-Q200 qualified alternatives, ERJ-3EKF46R4V (Panasonic) offers 50426 Pcs.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant and REACH unaffected, matching the original MCR03EZPFX46R4 compliance status.

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