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MCR03EZPFX9091 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX9091 is a 9.09 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 | 9.09 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 MCR03EZPFX9091 is determined by strict equivalence across the following parameters:
- Resistance value: 9.09 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 classified into two categories:
Direct Substitutes maintain full AEC-Q200 automotive qualification identical to the original part. These include CRCW06039K09FKEA (Vishay Dale), ERJ-3EKF9091V (Panasonic Electronic Components), and RMCF0603FT9K09 (Stackpole Electronics Inc).
Similar Substitutes meet all electrical and mechanical parameters but feature moisture-resistant construction instead of automotive AEC-Q200 rating. These include CR0603-FX-9091ELF (Bourns Inc.), RC0603FR-079K09L (YAGEO), and RC1608F9091CS (Samsung Electro-Mechanics).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Operating Temp | Features | Product Status | RoHS3 | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX9091 | Rohm Semiconductor | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Discontinued | Yes | 1 |
| CRCW06039K09FKEA | Vishay Dale | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active | Yes | 1 |
| ERJ-3EKF9091V | Panasonic Electronic Components | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active | Yes | 1 |
| RMCF0603FT9K09 | Stackpole Electronics Inc | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active | Yes | 1 |
| CR0603-FX-9091ELF | Bourns Inc. | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active | Yes | 1 |
| RC0603FR-079K09L | YAGEO | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active | Yes | 1 |
| RC1608F9091CS | Samsung Electro-Mechanics | 9.09 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active | Yes | 1 |
Engineering Selection Recommendations
For applications requiring strict automotive compliance, select from the direct substitutes: CRCW06039K09FKEA, ERJ-3EKF9091V, or RMCF0603FT9K09. All three maintain AEC-Q200 qualification and are currently in active production with substantial inventory availability.
For non-automotive applications or where moisture-resistant construction is acceptable, the similar substitutes CR0603-FX-9091ELF, RC0603FR-079K09L, and RC1608F9091CS provide equivalent electrical performance with active product status.
All substitute parts maintain identical electrical specifications, temperature coefficient, operating temperature range, RoHS3 compliance, and MSL rating. Physical dimensions vary slightly within acceptable tolerances for 0603 package footprints.
Frequently Asked Questions (FAQ)
Q: Can I use a similar substitute in place of the original MCR03EZPFX9091 in an automotive application?
A: Similar substitutes lack AEC-Q200 automotive qualification. Use direct substitutes (CRCW06039K09FKEA, ERJ-3EKF9091V, RMCF0603FT9K09) for automotive applications requiring AEC-Q200 compliance.
Q: Are all substitute parts compatible with the original 0603 footprint?
A: Yes. All substitute parts use the 0603 (1608 Metric) package. Physical dimensions vary slightly but remain within acceptable tolerances for standard 0603 PCB layouts.
Q: What is the difference between direct and similar substitutes?
A: Direct substitutes maintain AEC-Q200 automotive rating identical to the original part. Similar substitutes feature moisture-resistant construction instead of automotive qualification but meet all electrical and mechanical parameters.
Q: Which substitute has the highest inventory availability?
A: ERJ-3EKF9091V (Panasonic Electronic Components) has 146,679 pieces in stock, followed by CRCW06039K09FKEA (Vishay Dale) with 22,841 pieces.
Q: Do all substitutes have the same temperature coefficient?
A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range.
Q: Is packaging format a consideration when selecting substitutes?
A: Direct substitutes are available in Tape & Reel (TR) format. RC1608F9091CS (Samsung Electro-Mechanics) is available in Cut Tape (CT) format. Verify packaging requirements for your assembly process.
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