MCR03EZPFX63R4 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX63R4 is a 63.4 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	63.4 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
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX63R4 is determined by strict equivalence across the following parameters:

Resistance value: 63.4 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
Termination count: 2
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1

All identified substitute parts meet these core electrical and mechanical specifications. Differences in physical dimensions (length and height) remain within acceptable tolerances for 0603 package variants and do not affect functional interchangeability in standard PCB layouts.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	RoHS Status
MCR03EZPFX63R4	Rohm Semiconductor	63.4 Ω	±1%	0.1	0603	±100	-55 to 155	Discontinued	ROHS3
CRCW060363R4FKEA	Vishay Dale	63.4 Ω	±1%	0.1	0603	±100	-55 to 155	Active	ROHS3
ERJ-3EKF63R4V	Panasonic Electronic Components	63.4 Ω	±1%	0.1	0603	±100	-55 to 155	Active	ROHS3
RMCF0603FT63R4	Stackpole Electronics Inc	63.4 Ω	±1%	0.1	0603	±100	-55 to 155	Active	ROHS3
CR0603-FX-63R4ELF	Bourns Inc.	63.4 Ω	±1%	0.1	0603	±100	-55 to 155	Active	ROHS3
RC0603FR-0763R4L	YAGEO	63.4 Ω	±1%	0.1	0603	±100	-55 to 155	Active	ROHS3

Engineering Selection Recommendations

All substitute parts listed above are functionally equivalent to the MCR03EZPFX63R4 and meet identical electrical specifications. Selection among these alternatives should be based on the following factors:

Product Availability and Lead Time: CRCW060363R4FKEA (Vishay Dale), ERJ-3EKF63R4V (Panasonic), and RC0603FR-0763R4L (YAGEO) demonstrate higher inventory levels, supporting shorter procurement cycles. ERJ-3EKF63R4V offers the largest available stock at 176,635 pieces.

Automotive Compliance: CRCW060363R4FKEA, ERJ-3EKF63R4V, and RMCF0603FT63R4 carry explicit AEC-Q200 automotive ratings, matching the original part's qualification level. CR0603-FX-63R4ELF and RC0603FR-0763R4L are rated for moisture resistance but do not specify AEC-Q200 certification.

Active Product Status: All substitute parts maintain active production status, ensuring long-term availability and supply chain stability, unlike the discontinued MCR03EZPFX63R4.

Regulatory Compliance: All candidates are ROHS3 compliant with MSL 1 rating and REACH unaffected status, meeting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-63R4ELF or RC0603FR-0763R4L as direct replacements for automotive applications?

A: These parts meet all electrical and mechanical specifications for functional interchangeability. However, they lack explicit AEC-Q200 automotive certification. If AEC-Q200 qualification is a design requirement, use CRCW060363R4FKEA, ERJ-3EKF63R4V, or RMCF0603FT63R4 instead.

Q: Are there physical dimension differences between the MCR03EZPFX63R4 and its substitutes?

A: Minor variations exist within the 0603 package specification. The MCR03EZPFX63R4 and ERJ-3EKF63R4V share identical dimensions (0.063" L x 0.031" W, 1.60mm x 0.80mm). CRCW060363R4FKEA and RMCF0603FT63R4 measure 0.061" L x 0.031" W (1.55mm x 0.80mm). These differences fall within standard 0603 package tolerances and do not affect PCB layout compatibility.

Q: Which substitute offers the best supply chain continuity?

A: ERJ-3EKF63R4V from Panasonic provides the highest inventory level at 176,635 pieces, supporting extended production runs without supply interruption.

Q: Do all substitutes meet the same temperature and tolerance specifications?

A: Yes. All listed substitutes operate across -55°C to 155°C with ±1% tolerance and ±100ppm/°C temperature coefficient, matching the original MCR03EZPFX63R4 specifications exactly.

Q: What is the significance of MSL 1 rating for these resistors?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture baking requirements, simplifying inventory management and reducing production constraints for all listed parts.

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