MCR03EZPFX4302 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX4302 is a 43 kOhms ±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	43 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 to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX4302 is determined by strict equivalence across the following parameters: resistance value (43 kOhms), 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 compliance certifications (ROHS3, AEC-Q200 where applicable).

Substitute parts are categorized into two groups:

Direct Substitutes maintain full electrical and mechanical equivalence with identical or near-identical physical dimensions and all specified certifications. These parts are interchangeable without design modification.

Similar Substitutes meet all core electrical parameters and package requirements but may include additional features (moisture resistance, anti-sulfur coating) or minor dimensional variations within acceptable tolerances. These parts are functionally equivalent for the specified application.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Operating Temp	AEC-Q200	RoHS3	Status
MCR03EZPFX4302	Rohm Semiconductor	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Yes	Discontinued
CRCW060343K0FKEA	Vishay Dale	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Yes	Active
ERJ-3EKF4302V	Panasonic Electronic Components	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Yes	Active
RMCF0603FT43K0	Stackpole Electronics Inc	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Yes	Active
AC0603FR-0743KL	YAGEO	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Yes	Active
CR0603-FX-4302ELF	Bourns Inc.	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	Yes	Active
ERJ-S03F4302V	Panasonic Electronic Components	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	Yes	Yes	Active
RC0603FR-0743KL	YAGEO	43 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C to 155°C	No	Yes	Active

Engineering Selection Recommendations

For applications requiring strict AEC-Q200 automotive compliance, select from the following active parts: CRCW060343K0FKEA (Vishay Dale), ERJ-3EKF4302V (Panasonic), RMCF0603FT43K0 (Stackpole), AC0603FR-0743KL (YAGEO), or ERJ-S03F4302V (Panasonic). All maintain full AEC-Q200 certification and ROHS3 compliance with active product status.

For applications where AEC-Q200 certification is not mandatory but ROHS3 compliance is required, CR0603-FX-4302ELF (Bourns) and RC0603FR-0743KL (YAGEO) are suitable alternatives. These parts meet all electrical and mechanical specifications with moisture-resistant characteristics.

All listed substitutes are in active production with confirmed inventory availability, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for MCR03EZPFX4302?

A: Yes, all listed parts meet the core electrical specifications (43 kOhms ±1%, 0.1W, 0603 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range). Physical dimensions are equivalent within standard tolerances. Verify AEC-Q200 requirement for your application before selection.

Q: What is the difference between Direct Substitutes and Similar Substitutes?

A: Direct substitutes (CRCW060343K0FKEA, ERJ-3EKF4302V, RMCF0603FT43K0) maintain identical AEC-Q200 automotive certification. Similar substitutes (AC0603FR-0743KL, CR0603-FX-4302ELF, ERJ-S03F4302V, RC0603FR-0743KL) include additional features such as moisture resistance or anti-sulfur coating while meeting all core electrical parameters.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within standard tolerances. MCR03EZPFX4302, ERJ-3EKF4302V, AC0603FR-0743KL, CR0603-FX-4302ELF, ERJ-S03F4302V, and RC0603FR-0743KL share identical dimensions (0.063" L x 0.031" W, 0.022" max height). CRCW060343K0FKEA and RMCF0603FT43K0 have slightly reduced length (0.061") within acceptable PCB footprint tolerances.

Q: Which substitute offers the best inventory availability?

A: RMCF0603FT43K0 (Stackpole) has the highest inventory at 144,640 pieces. CRCW060343K0FKEA (Vishay Dale) offers 31,515 pieces. ERJ-3EKF4302V (Panasonic) provides 79,366 pieces. All alternatives maintain substantial stock levels.

Q: Do all substitutes comply with RoHS3 and REACH requirements?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected, matching the original MCR03EZPFX4302 compliance status.

Q: Is AEC-Q200 certification required for my application?

A: AEC-Q200 certification is mandatory for automotive applications subject to automotive industry standards. If your application is non-automotive or does not require automotive qualification, parts without AEC-Q200 rating (CR0603-FX-4302ELF, RC0603FR-0743KL) are acceptable alternatives.

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