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MCR03EZPFX3243 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX3243 is a 324 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 | 324 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 for the MCR03EZPFX3243 is determined by strict equivalence across the following parameters:
- Resistance value: 324 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 Compliant
- Moisture sensitivity: MSL 1
Substitute parts are categorized into two groups: Direct Equivalents (functionally identical with identical feature sets) and Similar Equivalents (functionally identical with minor feature variations that do not affect core electrical performance).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op. Temp Range | Features | Product Status | RoHS | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX3243 | Rohm Semiconductor | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Discontinued | ROHS3 | 1 |
| MCR03ERTF3243 | Rohm Semiconductor | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | — | Discontinued | ROHS3 | 1 |
| CRCW0603324KFKEA | Vishay Dale | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active | ROHS3 | 1 |
| ERJ-3EKF3243V | Panasonic Electronic Components | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active | ROHS3 | 1 |
| RMCF0603FT324K | Stackpole Electronics Inc | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active | ROHS3 | 1 |
| CR0603-FX-3243ELF | Bourns Inc. | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active | ROHS3 | 1 |
| RC0603FR-07324KL | YAGEO | 324 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active | ROHS3 | 1 |
Engineering Selection Recommendations
For applications requiring automotive AEC-Q200 certification, select from the following active parts: CRCW0603324KFKEA (Vishay Dale), ERJ-3EKF3243V (Panasonic Electronic Components), or RMCF0603FT324K (Stackpole Electronics Inc). These parts maintain full AEC-Q200 compliance equivalent to the original MCR03EZPFX3243.
For non-automotive applications or where moisture resistance is a design requirement, CR0603-FX-3243ELF (Bourns Inc.) and RC0603FR-07324KL (YAGEO) are active alternatives with moisture-resistant thick film composition.
MCR03ERTF3243 (Rohm Semiconductor) is a direct equivalent from the same manufacturer but is also discontinued. This part should not be selected for new designs.
All listed substitutes maintain identical electrical parameters: 324 kOhms resistance, ±1% tolerance, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, ROHS3 compliance, and MSL 1 rating.
Frequently Asked Questions (FAQ)
Q: Can MCR03ERTF3243 be used as a substitute for MCR03EZPFX3243?
A: MCR03ERTF3243 is electrically equivalent but is also discontinued at DiGi Electronics. For new designs and ongoing production, select from active alternatives such as CRCW0603324KFKEA, ERJ-3EKF3243V, or RMCF0603FT324K.
Q: What is the difference between parts marked "Automotive AEC-Q200" and "Moisture Resistant"?
A: Automotive AEC-Q200 parts meet automotive qualification standards. Moisture Resistant parts (CR0603-FX-3243ELF and RC0603FR-07324KL) are designed for enhanced moisture protection but do not carry AEC-Q200 certification. Select based on application requirements.
Q: Are all substitute parts compatible with the 0603 package footprint?
A: Yes. All listed substitutes use the 0603 (1608 Metric) package. Physical dimensions vary slightly between manufacturers (length 1.55mm to 1.60mm, width 0.80mm to 0.85mm, height 0.50mm to 0.55mm), but all are compatible with standard 0603 PCB footprints.
Q: Do all substitutes meet ROHS3 compliance?
A: Yes. All listed substitutes are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance.
Q: Which substitute has the highest inventory availability?
A: ERJ-3EKF3243V (Panasonic Electronic Components) has 67,805 pieces in stock, followed by CRCW0603324KFKEA (Vishay Dale) with 26,970 pieces.
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