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MCR03EZPFX4531 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX4531 is a 4.53 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package with automotive AEC-Q200 qualification. This part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain the same electrical and mechanical specifications for continued design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 4.53 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 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (4.53 kOhms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (RoHS3, MSL 1).
Parts are grouped into two categories:
Direct Equivalents maintain automotive AEC-Q200 qualification and identical electrical/mechanical specifications: CRCW06034K53FKEA (Vishay Dale), ERJ-3EKF4531V (Panasonic), and RMCF0603FT4K53 (Stackpole Electronics).
Similar Alternatives meet all electrical and mechanical parameters but feature moisture-resistant construction without automotive AEC-Q200 rating: CR0603-FX-4531ELF (Bourns) and RC0603FR-074K53L (YAGEO).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op. Temp Range | AEC-Q200 | RoHS3 | MSL | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX4531 | Rohm Semiconductor | 4.53 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Yes | 1 | Discontinued |
| CRCW06034K53FKEA | Vishay Dale | 4.53 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Yes | 1 | Active |
| ERJ-3EKF4531V | Panasonic Electronic Components | 4.53 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Yes | 1 | Active |
| RMCF0603FT4K53 | Stackpole Electronics Inc | 4.53 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Yes | 1 | Active |
| CR0603-FX-4531ELF | Bourns Inc. | 4.53 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Yes | 1 | Active |
| RC0603FR-074K53L | YAGEO | 4.53 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Yes | 1 | Active |
Engineering Selection Recommendations
For applications requiring automotive AEC-Q200 qualification, select from the direct equivalents: CRCW06034K53FKEA, ERJ-3EKF4531V, or RMCF0603FT4K53. All three maintain active product status with established supply chains and full compliance with the original MCR03EZPFX4531 specifications.
For non-automotive applications where AEC-Q200 qualification is not required, CR0603-FX-4531ELF and RC0603FR-074K53L provide functionally equivalent alternatives with moisture-resistant construction and active availability.
All substitute parts are RoHS3 compliant with MSL 1 rating, ensuring compatibility with standard PCB assembly processes.
Frequently Asked Questions (FAQ)
Q: Can CR0603-FX-4531ELF or RC0603FR-074K53L be used in automotive applications originally designed for MCR03EZPFX4531?
A: No. These parts lack AEC-Q200 automotive qualification. Use only CRCW06034K53FKEA, ERJ-3EKF4531V, or RMCF0603FT4K53 for automotive designs.
Q: Are all substitute parts compatible with existing PCB layouts designed for MCR03EZPFX4531?
A: Yes. All substitute parts use the 0603 (1608 Metric) package with identical footprint dimensions and two terminations, ensuring direct PCB compatibility.
Q: What is the difference between direct equivalents and similar alternatives?
A: Direct equivalents (CRCW06034K53FKEA, ERJ-3EKF4531V, RMCF0603FT4K53) maintain AEC-Q200 automotive qualification. Similar alternatives (CR0603-FX-4531ELF, RC0603FR-074K53L) feature moisture-resistant construction but lack automotive certification.
Q: Do all substitute parts meet the same temperature coefficient and operating temperature range?
A: Yes. All listed substitutes maintain ±100ppm/°C temperature coefficient and -55°C ~ 155°C operating range, matching the original MCR03EZPFX4531 specifications.
Q: Are there packaging format differences among the substitute parts?
A: Packaging formats vary (Tape & Reel or Cut Tape & Digi-Reel), but component specifications and PCB compatibility remain identical. Select based on procurement and assembly requirements.
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