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MCR03EZPFX1543 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX1543 is a 154 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 | 154 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 is determined by strict equivalence across the following parameters:
- Resistance value: 154 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
- Moisture sensitivity: MSL 1
Substitute parts are grouped into two categories:
Direct Substitutes maintain full AEC-Q200 automotive qualification and identical electrical specifications. These parts are interchangeable without design modification.
Similar Substitutes meet all core electrical and mechanical parameters but feature alternative material compositions (moisture-resistant variants) without automotive AEC-Q200 certification. These are suitable for non-automotive applications or where moisture resistance is prioritized over automotive qualification.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power | Package | Temp Coeff | Operating Temp | AEC-Q200 | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX1543 | Rohm Semiconductor | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Discontinued | 1115 Pcs |
| MCR03ERTF1543 | Rohm Semiconductor | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Discontinued | 1888 Pcs |
| CRCW0603154KFKEA | Vishay Dale | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 25943 Pcs |
| ERJ-3EKF1543V | Panasonic Electronic Components | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 99806 Pcs |
| RMCF0603FT154K | Stackpole Electronics Inc | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 62218 Pcs |
| CR0603-FX-1543ELF | Bourns Inc. | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Active | 5457 Pcs |
| RC0603FR-07154KL | YAGEO | 154 kOhms | ±1% | 0.1W | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Active | 6100 Pcs |
Engineering Selection Recommendations
For Automotive Applications: Select CRCW0603154KFKEA (Vishay Dale), ERJ-3EKF1543V (Panasonic), or RMCF0603FT154K (Stackpole Electronics). All three maintain AEC-Q200 automotive qualification, active product status, and full electrical equivalence to the original MCR03EZPFX1543. CRCW0603154KFKEA offers the highest inventory availability at 25943 units.
For Non-Automotive Applications: CR0603-FX-1543ELF (Bourns) and RC0603FR-07154KL (YAGEO) are suitable alternatives. Both meet all core electrical and mechanical parameters with moisture-resistant thick film composition. These parts are active products with adequate inventory.
For Rohm Semiconductor Continuity: MCR03ERTF1543 maintains the same manufacturer and series lineage, though it lacks AEC-Q200 certification. This option is appropriate only when manufacturer consistency is required and automotive qualification is not mandated.
Frequently Asked Questions (FAQ)
Q: Can I use CR0603-FX-1543ELF or RC0603FR-07154KL in automotive applications?
A: These parts meet all electrical and mechanical specifications but lack AEC-Q200 automotive certification. Use only in non-automotive applications or where automotive qualification is not a design requirement.
Q: What is the difference between direct and similar substitutes?
A: Direct substitutes (CRCW0603154KFKEA, ERJ-3EKF1543V, RMCF0603FT154K) maintain AEC-Q200 automotive qualification. Similar substitutes (CR0603-FX-1543ELF, RC0603FR-07154KL) feature moisture-resistant composition without automotive certification.
Q: Are all substitutes pin-compatible with MCR03EZPFX1543?
A: Yes. All listed substitutes use the 0603 (1608 Metric) package with 2 terminations, ensuring mechanical and electrical compatibility on PCB layouts designed for the original part.
Q: Which substitute has the best availability?
A: ERJ-3EKF1543V (Panasonic) offers the highest inventory at 99806 units, followed by RMCF0603FT154K (Stackpole) at 62218 units.
Q: Does MCR03ERTF1543 differ from MCR03EZPFX1543?
A: Both are Rohm Semiconductor MCR series 154 kOhms ±1% 0.1W 0603 resistors with identical electrical specifications. MCR03ERTF1543 is available in Cut Tape and Digi-Reel packaging but lacks AEC-Q200 certification.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental certifications.
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