MCR03EZPFX4423 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX4423 is a 442 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.

Substiute Parts

MCR03EZPFX4423

Rohm SemiconductorIn Stock: 865MCR03EZPFX4423 Datasheet

Current PartRFQ

MCR03ERTF4423

Rohm SemiconductorIn Stock: 1133MCR03ERTF4423 Datasheet

DirectRFQ

CRCW0603442KFKEA

Vishay DaleIn Stock: 13112CRCW0603442KFKEA Datasheet

DirectRFQ

ERJ-3EKF4423V

Panasonic Electronic ComponentsIn Stock: 23128ERJ-3EKF4423V Datasheet

DirectRFQ

RMCF0603FT442K

Stackpole Electronics IncIn Stock: 60914RMCF0603FT442K Datasheet

DirectRFQ

RC0603FR-07442KL

YAGEOIn Stock: 50348RC0603FR-07442KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX4423 is determined by strict equivalence across the following parameters: resistance value (442 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, REACH Unaffected, EAR99).

Substitute parts are grouped into two categories:

Direct Substitutes meet all electrical and mechanical parameters with AEC-Q200 automotive qualification or equivalent moisture resistance features. These parts are functionally interchangeable without design modification.

Similar Substitutes meet all core electrical and mechanical parameters but may have minor dimensional variations or different feature sets. These parts require verification of application-specific requirements before implementation.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, the following active parts are recommended as direct substitutes: CRCW0603442KFKEA (Vishay Dale), ERJ-3EKF4423V (Panasonic Electronic Components), and RMCF0603FT442K (Stackpole Electronics Inc). All three parts maintain full compliance with automotive standards and ROHS3 requirements.

RMCF0603FT442K offers the highest inventory availability (60831 Pcs) among active AEC-Q200 qualified alternatives, supporting supply chain continuity.

RC0603FR-07442KL (YAGEO) is a similar substitute with moisture-resistant thick film composition and active product status. This part meets all electrical and mechanical parameters but lacks explicit AEC-Q200 automotive certification. Selection of this part should be based on application-specific environmental and reliability requirements.

MCR03ERTF4423 (Rohm Semiconductor) is a direct electrical equivalent but shares discontinued status with the original part, limiting its viability for long-term supply.

Frequently Asked Questions (FAQ)

Q: Can MCR03ERTF4423 be used as a substitute for MCR03EZPFX4423?

A: MCR03ERTF4423 is electrically and mechanically equivalent but is also discontinued at DiGi Electronics. While functionally interchangeable, it does not resolve supply availability concerns. Active alternatives such as CRCW0603442KFKEA, ERJ-3EKF4423V, or RMCF0603FT442K are preferred for ongoing production.

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

A: Direct substitutes meet all electrical parameters (442 kOhms, ±1%, 0.1W) and maintain AEC-Q200 automotive qualification. Similar substitutes meet all electrical and mechanical parameters but may have different feature sets, such as moisture resistance instead of explicit automotive certification.

Q: Are all substitute parts compatible with the original 0603 package footprint?

A: All listed substitutes use the 0603 (1608 Metric) package. Minor dimensional variations exist within tolerance (length 1.55mm to 1.60mm, width 0.80mm to 0.85mm, height 0.50mm to 0.55mm), but all parts are compatible with standard 0603 PCB footprints.

Q: Which substitute offers the best supply availability?

A: RMCF0603FT442K (Stackpole Electronics Inc) has the highest inventory at 60831 Pcs with active product status and full AEC-Q200 automotive qualification.

Q: Is RC0603FR-07442KL suitable for automotive applications?

A: RC0603FR-07442KL meets all electrical and mechanical specifications but is rated for moisture resistance rather than explicit AEC-Q200 automotive qualification. Application suitability depends on specific automotive reliability and environmental requirements.

Q: Do all substitutes maintain the same temperature coefficient?

A: All listed substitutes maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, matching the original MCR03EZPFX4423 specification.