MCR03EZPFX12R4 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX12R4 is a 12.4 Ohm ±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

MCR03EZPFX12R4

Rohm SemiconductorIn Stock: 826MCR03EZPFX12R4 Datasheet

Current PartRFQ

CRCW060312R4FKEA

Vishay DaleIn Stock: 26591CRCW060312R4FKEA Datasheet

DirectRFQ

ERJ-3EKF12R4V

Panasonic Electronic ComponentsIn Stock: 44150ERJ-3EKF12R4V Datasheet

DirectRFQ

RC0603FR-0712R4L

YAGEOIn Stock: 17488RC0603FR-0712R4L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX12R4 is determined by strict equivalence across the following parameters: resistance value (12.4 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 compliance certifications (AEC-Q200, ROHS3, MSL 1).

The substitute parts are grouped into two categories:

Direct Substitutes (CRCW060312R4FKEA, ERJ-3EKF12R4V): These parts meet all electrical and mechanical specifications of the original part and carry identical automotive AEC-Q200 certification. Both are currently in active production status.

Similar Substitute (RC0603FR-0712R4L): This part matches all critical electrical parameters and package specifications. It carries moisture-resistant thick film composition instead of standard automotive-rated thick film, but maintains equivalent electrical performance and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring strict automotive AEC-Q200 compliance, CRCW060312R4FKEA (Vishay Dale) and ERJ-3EKF12R4V (Panasonic) are direct functional equivalents with active production status and full certification parity to the original MCR03EZPFX12R4.

RC0603FR-0712R4L (YAGEO) is suitable for applications where moisture-resistant thick film composition is acceptable and automotive AEC-Q200 certification is not a mandatory requirement. This part maintains electrical equivalence and environmental ratings across the specified operating temperature range.

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

Frequently Asked Questions (FAQ)

Q: Can CRCW060312R4FKEA directly replace MCR03EZPFX12R4 in automotive applications? A: Yes. Both parts are AEC-Q200 rated with identical electrical specifications (12.4 Ohms ±1%, 0.1W), temperature coefficient (±100ppm/°C), operating range (-55°C to 155°C), and package type (0603). The primary difference is product status: CRCW060312R4FKEA is in active production while MCR03EZPFX12R4 is discontinued.

Q: What is the difference between ERJ-3EKF12R4V and CRCW060312R4FKEA? A: Both are direct substitutes with identical electrical and mechanical specifications and AEC-Q200 certification. The difference is manufacturer: ERJ-3EKF12R4V is Panasonic and CRCW060312R4FKEA is Vishay Dale. Selection between them depends on supply chain availability and procurement preferences.

Q: Is RC0603FR-0712R4L suitable for automotive applications? A: RC0603FR-0712R4L meets all electrical and environmental specifications of the original part. However, it is not specified as AEC-Q200 rated. Use this part only in applications where automotive certification is not a contractual or design requirement.

Q: Are there physical dimension differences between these parts? A: Minor variations exist. MCR03EZPFX12R4 and ERJ-3EKF12R4V are 0.063" L x 0.031" W with 0.022" max height. CRCW060312R4FKEA is 0.061" L x 0.033" W with 0.020" max height. RC0603FR-0712R4L is 0.063" L x 0.031" W with 0.022" max height. All fit within 0603 package specifications and are mechanically compatible with standard PCB layouts.

Q: Do all substitutes have the same moisture sensitivity rating? A: Yes. All parts including the original MCR03EZPFX12R4 carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.

Q: What is the inventory status of these substitutes? A: CRCW060312R4FKEA has 26,514 units in stock, ERJ-3EKF12R4V has 44,075 units in stock, and RC0603FR-0712R4L has 17,462 units in stock. All are available for immediate procurement.