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MCR03EZPFX3403 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX3403 is a 340 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 from active manufacturers that maintain identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 340 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 to 155°C |
| Automotive Rating | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (340 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, MSL 1).
Parts are categorized as direct substitutes when all electrical and mechanical parameters match exactly. Parts designated as similar substitutes meet all core electrical specifications and package requirements but differ in specific feature classifications (automotive AEC-Q200 rating versus moisture-resistant designation) or dimensional tolerances within acceptable ranges.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op. Temp Range | AEC-Q200 | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX3403 | Rohm Semiconductor | 340 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Discontinued | 830 Pcs |
| CRCW0603340KFKEA | Vishay Dale | 340 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 21640 Pcs |
| ERJ-3EKF3403V | Panasonic Electronic Components | 340 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 31365 Pcs |
| RMCF0603FT340K | Stackpole Electronics Inc | 340 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Yes | Active | 46790 Pcs |
| CR0603-FX-3403ELF | Bourns Inc. | 340 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Active | 20540 Pcs |
| RC0603FR-07340KL | YAGEO | 340 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | No | Active | 4400 Pcs |
Engineering Selection Recommendations
For applications requiring strict AEC-Q200 automotive compliance, direct substitutes CRCW0603340KFKEA (Vishay Dale), ERJ-3EKF3403V (Panasonic Electronic Components), and RMCF0603FT340K (Stackpole Electronics Inc) are qualified equivalents. All three maintain active product status with robust inventory availability and identical electrical specifications to the original MCR03EZPFX3403.
For non-automotive applications or designs where moisture-resistant thick film composition is acceptable, CR0603-FX-3403ELF (Bourns Inc.) and RC0603FR-07340KL (YAGEO) provide functionally equivalent alternatives with active status and sufficient inventory. These parts meet all core electrical and mechanical requirements but do not carry explicit AEC-Q200 automotive certification.
All substitute candidates are RoHS3 compliant with MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.
Frequently Asked Questions (FAQ)
Q: Can CR0603-FX-3403ELF or RC0603FR-07340KL be used in automotive applications requiring AEC-Q200?
A: These parts do not carry AEC-Q200 certification. For automotive designs with AEC-Q200 requirements, use CRCW0603340KFKEA, ERJ-3EKF3403V, or RMCF0603FT340K.
Q: Are all substitute parts compatible with the 0603 package footprint?
A: Yes. All listed substitutes use the 0603 (1608 Metric) package with identical pin count (2 terminations) and compatible dimensional specifications for PCB assembly.
Q: What is the difference between AEC-Q200 rated and moisture-resistant designations?
A: AEC-Q200 is an automotive qualification standard covering reliability under automotive environmental conditions. Moisture-resistant is a material property classification. Both designations indicate reliability but apply different qualification frameworks.
Q: Do all substitutes have the same temperature coefficient?
A: Yes. All listed parts specify ±100ppm/°C temperature coefficient with identical -55°C to 155°C operating range.
Q: Which substitute has the highest inventory availability?
A: RMCF0603FT340K (Stackpole Electronics Inc) has the highest inventory at 46,790 pieces.
Q: Are dimensional variations between substitutes significant for PCB assembly?
A: Dimensional variations are within standard 0603 package tolerances. Maximum height differences range from 0.50mm to 0.55mm, which do not affect standard reflow soldering or component placement processes.
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