MCR03EZPFX4530 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX4530 is a 453 Ohms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets automotive AEC-Q200 qualification standards and operates across -55°C to 155°C. The part is currently 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	453 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 ~ 155°C
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MCR03EZPFX4530 is determined by strict equivalence across the following parameters: resistance value (453 Ohms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and termination count (2). All substitute parts listed maintain these electrical and mechanical specifications.

The substitute parts are categorized as follows:

Direct Substitutes (Automotive AEC-Q200 Rated): CRCW0603453RFKEA (Vishay Dale), ERJ-3EKF4530V (Panasonic Electronic Components), and RMCF0603FT453R (Stackpole Electronics Inc) provide full functional equivalence with automotive qualification matching the original part.

Similar Substitutes (Moisture Resistant, Non-Automotive Rated): CR0603-FX-4530ELF (Bourns Inc.) and RC0603FR-07453RL (YAGEO) meet all electrical and mechanical parameters but feature moisture-resistant construction without automotive AEC-Q200 certification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Automotive AEC-Q200	Product Status	Inventory
MCR03EZPFX4530	Rohm Semiconductor	453 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued	850 Pcs
CRCW0603453RFKEA	Vishay Dale	453 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	320266 Pcs
ERJ-3EKF4530V	Panasonic Electronic Components	453 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	50818 Pcs
RMCF0603FT453R	Stackpole Electronics Inc	453 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active	67147 Pcs
CR0603-FX-4530ELF	Bourns Inc.	453 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	20488 Pcs
RC0603FR-07453RL	YAGEO	453 Ω	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	No	Active	143593 Pcs

Engineering Selection Recommendations

For applications requiring automotive AEC-Q200 compliance, select from the direct substitutes: CRCW0603453RFKEA, ERJ-3EKF4530V, or RMCF0603FT453R. All three maintain full electrical and mechanical equivalence with the original MCR03EZPFX4530 and carry active product status with established supply availability.

CRCW0603453RFKEA (Vishay Dale) offers the highest inventory level at 320,266 pieces, providing supply chain stability. ERJ-3EKF4530V (Panasonic Electronic Components) and RMCF0603FT453R (Stackpole Electronics Inc) are also actively manufactured with substantial stock levels.

For non-automotive applications where AEC-Q200 certification is not required, CR0603-FX-4530ELF (Bourns Inc.) and RC0603FR-07453RL (YAGEO) are functionally equivalent alternatives with moisture-resistant construction. RC0603FR-07453RL provides the largest inventory at 143,593 pieces.

All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-4530ELF or RC0603FR-07453RL as direct replacements for MCR03EZPFX4530 in automotive applications?

A: No. CR0603-FX-4530ELF and RC0603FR-07453RL lack automotive AEC-Q200 certification. For automotive designs, use CRCW0603453RFKEA, ERJ-3EKF4530V, or RMCF0603FT453R.

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

A: Yes. All substitute parts use the 0603 (1608 Metric) package with identical termination count (2). Dimensional variations are within standard PCB assembly tolerances.

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

A: Direct substitutes (CRCW0603453RFKEA, ERJ-3EKF4530V, RMCF0603FT453R) carry automotive AEC-Q200 qualification matching the original part. Similar substitutes (CR0603-FX-4530ELF, RC0603FR-07453RL) meet all electrical and mechanical specifications but feature moisture-resistant construction without automotive certification.

Q: Do all substitutes meet the same temperature coefficient and operating range?

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating range, ensuring thermal performance equivalence.

Q: Which substitute offers the best supply availability?

A: CRCW0603453RFKEA (Vishay Dale) has the highest inventory at 320,266 pieces. For non-automotive applications, RC0603FR-07453RL (YAGEO) provides 143,593 pieces in stock.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance.

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