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MCR03EZPFX1273 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX1273 is a 127 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, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications for seamless board-level substitution.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 127 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 to 155°C |
| Terminations | 2 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MCR03EZPFX1273 is determined by strict equivalence across the following parameters: resistance value (127 kOhms), 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 (RoHS3, REACH Unaffected, EAR99).
Direct Equivalents maintain all electrical and mechanical specifications with AEC-Q200 automotive rating:
- CRCW0603127KFKEA (Vishay Dale)
- ERJ-3EKF1273V (Panasonic Electronic Components)
- RMCF0603FT127K (Stackpole Electronics Inc)
Similar Equivalents maintain all core electrical and mechanical specifications but feature moisture-resistant construction instead of automotive AEC-Q200 rating:
- CR0603-FX-1273ELF (Bourns Inc.)
- RC0603FR-07127KL (YAGEO)
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op. Temp Range | Composition | RoHS Status | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX1273 | Rohm Semiconductor | 127 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | ROHS3 | Discontinued | 1006 Pcs |
| CRCW0603127KFKEA | Vishay Dale | 127 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | ROHS3 | Active | 25634 Pcs |
| ERJ-3EKF1273V | Panasonic Electronic Components | 127 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | ROHS3 | Active | 145308 Pcs |
| RMCF0603FT127K | Stackpole Electronics Inc | 127 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | ROHS3 | Active | 162121 Pcs |
| CR0603-FX-1273ELF | Bourns Inc. | 127 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | ROHS3 | Active | 24248 Pcs |
| RC0603FR-07127KL | YAGEO | 127 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | ROHS3 | Active | 228209 Pcs |
Engineering Selection Recommendations
For applications requiring AEC-Q200 automotive qualification, select from the direct equivalent group: CRCW0603127KFKEA, ERJ-3EKF1273V, or RMCF0603FT127K. All three maintain identical electrical specifications and automotive ratings. ERJ-3EKF1273V offers the highest inventory availability at 145,308 units. RMCF0603FT127K provides the second-highest availability at 162,121 units.
For non-automotive applications where moisture-resistant construction is acceptable, CR0603-FX-1273ELF and RC0603FR-07127KL are suitable alternatives. RC0603FR-07127KL demonstrates the highest inventory level across all substitutes at 228,209 units.
All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification consistent with the original MCR03EZPFX1273.
Frequently Asked Questions (FAQ)
Q: Can I use CR0603-FX-1273ELF or RC0603FR-07127KL as direct replacements for MCR03EZPFX1273 in automotive applications?
A: CR0603-FX-1273ELF and RC0603FR-07127KL feature moisture-resistant construction rather than AEC-Q200 automotive rating. Use these only in non-automotive applications. For automotive circuits, select CRCW0603127KFKEA, ERJ-3EKF1273V, or RMCF0603FT127K.
Q: Are all substitute parts physically compatible with the original PCB footprint?
A: All substitute parts use the 0603 (1608 Metric) package. Dimensional variations exist within tolerance: length ranges from 0.061" to 0.063" (1.55mm to 1.60mm) and height from 0.020" to 0.022" (0.50mm to 0.55mm). These variations are within standard PCB design tolerances for 0603 components.
Q: What is the difference between direct equivalents and similar equivalents?
A: Direct equivalents (CRCW0603127KFKEA, ERJ-3EKF1273V, RMCF0603FT127K) carry AEC-Q200 automotive certification matching the original part. Similar equivalents (CR0603-FX-1273ELF, RC0603FR-07127KL) omit automotive rating but maintain all core electrical parameters and moisture resistance.
Q: Which substitute offers the best inventory availability?
A: RC0603FR-07127KL (YAGEO) provides the highest inventory at 228,209 units. For automotive-rated alternatives, RMCF0603FT127K (Stackpole) offers 162,121 units.
Q: Do all substitutes maintain the same temperature coefficient and operating range?
A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range identical to MCR03EZPFX1273.
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