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MCR03EZPFX4221 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX4221 is a 4.22 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 | 4.22 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 MCR03EZPFX4221 is determined by strict equivalence across the following parameters:
Critical Matching Parameters:
- Resistance value: 4.22 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 level: 1 (Unlimited)
Direct Substitutes maintain all critical parameters and automotive AEC-Q200 certification. These parts are functionally and mechanically interchangeable with the original MCR03EZPFX4221.
Similar Substitutes match all critical electrical and mechanical parameters but feature moisture-resistant construction instead of automotive AEC-Q200 certification. These are suitable for applications where automotive qualification is not required.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff (ppm/°C) | Operating Temp (°C) | AEC-Q200 | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX4221 | Rohm Semiconductor | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Discontinued | 933 |
| CRCW06034K22FKEA | Vishay Dale | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 17750 |
| ERJ-3EKF4221V | Panasonic Electronic Components | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 112754 |
| RMCF0603FG4K22 | Stackpole Electronics Inc | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 10696 |
| RMCF0603FT4K22 | Stackpole Electronics Inc | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | Yes | Active | 401556 |
| CR0603-FX-4221ELF | Bourns Inc. | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | No | Active | 24033 |
| RC0603FR-074K22L | YAGEO | 4.22 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 ~ 155 | No | Active | 239377 |
Engineering Selection Recommendations
For Automotive Applications Requiring AEC-Q200 Certification:
Select from the direct substitute group: CRCW06034K22FKEA (Vishay Dale), ERJ-3EKF4221V (Panasonic Electronic Components), RMCF0603FG4K22 (Stackpole Electronics Inc), or RMCF0603FT4K22 (Stackpole Electronics Inc). All maintain full automotive qualification and are in active production status. RMCF0603FT4K22 offers the highest inventory availability at 401,556 pieces.
For Non-Automotive Applications:
CR0603-FX-4221ELF (Bourns Inc.) and RC0603FR-074K22L (YAGEO) are suitable alternatives when AEC-Q200 certification is not required. Both are in active production with substantial inventory levels. RC0603FR-074K22L provides the largest available stock at 239,377 pieces.
Compliance Considerations:
All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and identical electrical specifications. Dimensional variations are minimal and do not affect PCB layout or assembly processes.
Frequently Asked Questions (FAQ)
Q: Can I use CR0603-FX-4221ELF or RC0603FR-074K22L as direct replacements for MCR03EZPFX4221 in automotive applications?
A: No. CR0603-FX-4221ELF and RC0603FR-074K22L lack AEC-Q200 automotive certification. Use these only in non-automotive applications. For automotive use, select from CRCW06034K22FKEA, ERJ-3EKF4221V, RMCF0603FG4K22, or RMCF0603FT4K22.
Q: Are there dimensional differences between the MCR03EZPFX4221 and its substitutes?
A: Dimensional variations exist within acceptable tolerances. MCR03EZPFX4221 and ERJ-3EKF4221V measure 0.063" L x 0.031" W (1.60mm x 0.80mm). CRCW06034K22FKEA, RMCF0603FG4K22, and RMCF0603FT4K22 measure 0.061" L x 0.031" W (1.55mm x 0.80mm). These differences do not affect PCB assembly or electrical performance.
Q: What is the difference between RMCF0603FG4K22 and RMCF0603FT4K22?
A: Both are Stackpole Electronics Inc resistors with identical electrical specifications and AEC-Q200 certification. The primary difference is packaging designation and inventory availability. RMCF0603FT4K22 has significantly higher stock (401,556 vs. 10,696 pieces).
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, ensuring equivalent thermal performance.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), matching the original MCR03EZPFX4221 specifications.
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