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MCR03EZPFX4301 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX4301 is a 4.3 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
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 4.3 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 |
| Automotive Rating | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MCR03EZPFX4301 is determined by strict equivalence across the following parameters:
- Resistance value: 4.3 kOhms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Package: 0603 (1608 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C ~ 155°C
- RoHS compliance: ROHS3 Compliant
- Moisture sensitivity level: 1 (Unlimited)
Parts are classified into two categories:
Direct Substitutes meet all electrical and mechanical parameters with active product status and full AEC-Q200 automotive certification.
Similar Substitutes meet all core electrical and mechanical parameters with active product status but may have variations in specific features (such as moisture resistance enhancements) or lack explicit AEC-Q200 designation in their primary specification.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff (ppm/°C) | Operating Temp (°C) | AEC-Q200 | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX4301 | Rohm Semiconductor | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Discontinued | 643 |
| CRCW06034K30FKEA | Vishay Dale | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 44556 |
| ERJ-3EKF4301V | Panasonic Electronic Components | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 654183 |
| RMCF0603FT4K30 | Stackpole Electronics Inc | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 60591 |
| AC0603FR-074K3L | YAGEO | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 1488 |
| CR0603-FX-4301ELF | Bourns Inc. | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | No | Active | 77045 |
| RC0603FR-074K3L | YAGEO | 4.3 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | No | Active | 5005 |
Engineering Selection Recommendations
For applications requiring strict AEC-Q200 automotive compliance, select from the direct substitutes: CRCW06034K30FKEA (Vishay Dale), ERJ-3EKF4301V (Panasonic Electronic Components), RMCF0603FT4K30 (Stackpole Electronics Inc), or AC0603FR-074K3L (YAGEO). All four parts maintain full electrical and mechanical equivalence with the original MCR03EZPFX4301 and carry active product status with established supply availability.
For non-automotive applications or designs where AEC-Q200 certification is not a requirement, CR0603-FX-4301ELF (Bourns Inc.) and RC0603FR-074K3L (YAGEO) are functionally equivalent alternatives with superior inventory levels and active manufacturing status.
All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard PCB assembly processes and long-term storage without moisture sensitivity concerns.
Frequently Asked Questions (FAQ)
Q: Can I use CR0603-FX-4301ELF as a direct replacement for MCR03EZPFX4301 in automotive applications?
A: CR0603-FX-4301ELF meets all electrical and mechanical parameters but does not carry explicit AEC-Q200 automotive certification. Use only in non-automotive applications or where automotive qualification is not mandated by design specifications.
Q: What is the primary difference between direct and similar substitutes?
A: Direct substitutes (CRCW06034K30FKEA, ERJ-3EKF4301V, RMCF0603FT4K30, AC0603FR-074K3L) carry AEC-Q200 automotive rating. Similar substitutes (CR0603-FX-4301ELF, RC0603FR-074K3L) meet all electrical and mechanical specifications but lack explicit automotive certification.
Q: Are there physical dimension variations between substitute parts?
A: Minor dimensional variations exist within tolerance. MCR03EZPFX4301, ERJ-3EKF4301V, AC0603FR-074K3L, CR0603-FX-4301ELF, and RC0603FR-074K3L measure 0.063" L x 0.031" W (1.60mm x 0.80mm). CRCW06034K30FKEA and RMCF0603FT4K30 measure 0.061" L x 0.033" W (1.55mm x 0.85mm) and 0.061" L x 0.031" W (1.55mm x 0.80mm) respectively. All fit standard 0603 footprints.
Q: Which substitute offers the best supply availability?
A: ERJ-3EKF4301V (Panasonic) provides the highest inventory at 654,183 pieces, followed by CR0603-FX-4301ELF (Bourns) at 77,045 pieces.
Q: Do all substitutes maintain the same temperature coefficient and operating range?
A: All listed substitutes maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, ensuring thermal performance equivalence.
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