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MCR03EZPFX3743 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX3743 is a 374 kOhms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets Automotive AEC-Q200 qualification and operates across -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 | 374 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 for MCR03EZPFX3743 is determined by strict equivalence across the following parameters:
- Resistance value: 374 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
- RoHS3 compliance
- MSL rating: 1 (Unlimited)
Substitute parts are grouped into two categories:
Direct Substitutes maintain full AEC-Q200 automotive qualification and identical electrical specifications.
Similar Substitutes maintain all core electrical and mechanical parameters but feature alternative material compositions (moisture-resistant variants) without explicit AEC-Q200 designation.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power | Package | Temp Coeff | Operating Temp | AEC-Q200 | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX3743 | Rohm Semiconductor | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Discontinued | 868 Pcs |
| MCR03ERTF3743 | Rohm Semiconductor | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Discontinued | 1596 Pcs |
| CRCW0603374KFKEA | Vishay Dale | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 34090 Pcs |
| ERJ-3EKF3743V | Panasonic Electronic Components | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 39053 Pcs |
| RMCF0603FT374K | Stackpole Electronics Inc | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 55120 Pcs |
| CR0603-FX-3743ELF | Bourns Inc. | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Active | 25087 Pcs |
| RC0603FR-07374KL | YAGEO | 374 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Active | 73329 Pcs |
Engineering Selection Recommendations
For applications requiring AEC-Q200 automotive qualification, direct substitutes are CRCW0603374KFKEA (Vishay Dale), ERJ-3EKF3743V (Panasonic Electronic Components), and RMCF0603FT374K (Stackpole Electronics Inc). All three maintain active product status with substantial inventory availability.
For non-automotive applications or where moisture-resistant composition is preferred, CR0603-FX-3743ELF (Bourns Inc.) and RC0603FR-07374KL (YAGEO) provide equivalent electrical and mechanical performance with active product status and higher inventory levels.
MCR03ERTF3743 (Rohm Semiconductor) is a direct electrical equivalent but is discontinued, making it unsuitable for new procurement despite higher inventory than the original part.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part in place of MCR03EZPFX3743 in automotive applications?
A: Yes, if the application requires AEC-Q200 qualification. Use CRCW0603374KFKEA, ERJ-3EKF3743V, or RMCF0603FT374K. For non-automotive applications, CR0603-FX-3743ELF and RC0603FR-07374KL are suitable.
Q: Are all substitute parts physically compatible with the original PCB footprint?
A: Yes. All substitute parts use the 0603 (1608 Metric) package with identical termination count (2) and compatible physical dimensions within standard PCB design tolerances.
Q: What is the difference between direct and similar substitutes?
A: Direct substitutes maintain AEC-Q200 automotive qualification. Similar substitutes meet all electrical and mechanical specifications but feature moisture-resistant composition without explicit automotive certification.
Q: Why is MCR03ERTF3743 listed as discontinued despite higher inventory?
A: MCR03ERTF3743 is discontinued at DiGi Electronics, indicating no ongoing procurement support. Active-status alternatives are recommended for long-term supply chain reliability.
Q: Do all substitutes meet RoHS3 compliance?
A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited).
Q: Which substitute offers the best inventory availability?
A: RC0603FR-07374KL (YAGEO) has the highest inventory at 73,329 pieces, followed by RMCF0603FT374K (Stackpole Electronics Inc) at 55,120 pieces.
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