MCR03EZPFX5492 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX5492 is a 54.9 kOhms ±1% thick film chip resistor in 0603 (1608 Metric) package rated for 0.1W power dissipation. Manufactured by Rohm Semiconductor, this component meets Automotive AEC-Q200 qualification standards and operates across -55°C to 155°C. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Resistance	54.9 kOhms
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 ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Resistance value: 54.9 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.1W / 1/10W (exact match required)
Package: 0603 (1608 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)
Moisture sensitivity: MSL 1 (exact match required)

All substitute parts listed meet these criteria. Direct substitutes maintain identical electrical and mechanical specifications. Similar substitutes meet all core parameters but may differ in secondary features such as automotive qualification or moisture resistance designation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status	Inventory
MCR03EZPFX5492	Rohm Semiconductor	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Discontinued	896 Pcs
MCR03ERTF5492	Rohm Semiconductor	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Thick Film	Discontinued	1118 Pcs
CRCW060354K9FKEA	Vishay Dale	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	23411 Pcs
ERJ-3EKF5492V	Panasonic Electronic Components	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	171350 Pcs
RMCF0603FT54K9	Stackpole Electronics Inc	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	101652 Pcs
CR0603-FX-5492ELF	Bourns Inc.	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	56684 Pcs
RC0603FR-0754K9L	YAGEO	54.9 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	61534 Pcs

Engineering Selection Recommendations

For applications requiring Automotive AEC-Q200 qualification, select from: CRCW060354K9FKEA (Vishay Dale), ERJ-3EKF5492V (Panasonic), or RMCF0603FT54K9 (Stackpole Electronics). These parts maintain full automotive compliance equivalent to the original MCR03EZPFX5492.

For non-automotive applications where moisture resistance is prioritized, CR0603-FX-5492ELF (Bourns) and RC0603FR-0754K9L (YAGEO) provide active product status with moisture-resistant thick film construction.

ERJ-3EKF5492V offers the highest inventory availability (171,350 pcs) among active alternatives. CRCW060354K9FKEA provides the second-highest availability (23,411 pcs) with maintained AEC-Q200 qualification.

All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can MCR03ERTF5492 replace MCR03EZPFX5492 in automotive applications?

A: MCR03ERTF5492 is a direct Rohm Semiconductor equivalent with identical electrical specifications. However, it is also discontinued at DiGi Electronics. For active product status, select CRCW060354K9FKEA, ERJ-3EKF5492V, or RMCF0603FT54K9, all of which maintain AEC-Q200 automotive qualification.

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

A: Direct substitutes (MCR03ERTF5492, CRCW060354K9FKEA, ERJ-3EKF5492V, RMCF0603FT54K9) maintain all electrical and mechanical parameters including automotive AEC-Q200 qualification where applicable. Similar substitutes (CR0603-FX-5492ELF, RC0603FR-0754K9L) meet all core electrical specifications but feature moisture resistance designation instead of automotive qualification.

Q: Are there physical dimension differences between substitutes?

A: All parts conform to 0603 (1608 Metric) package specification. Minor dimensional variations exist within tolerance: CRCW060354K9FKEA measures 0.061" L x 0.033" W with 0.020" max height, while other parts measure 0.063" L x 0.031" W with 0.022" max height. These variations remain within standard 0603 package envelope and do not affect PCB layout compatibility.

Q: Which substitute offers the best supply availability?

A: ERJ-3EKF5492V (Panasonic) provides the highest inventory at 171,350 pcs. RMCF0603FT54K9 (Stackpole) offers 101,652 pcs, and CRCW060354K9FKEA (Vishay Dale) provides 23,411 pcs. All three maintain active product status and AEC-Q200 qualification.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting standard PCB assembly and storage requirements.

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