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MCR03EZPFX5103 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX5103 is a 510 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 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 | 510 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 |
| Automotive Rating | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MCR03EZPFX5103 is determined by strict equivalence across the following parameters:
- Resistance value: 510 kOhms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Package type: 0603 (1608 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to 155°C
- RoHS compliance: ROHS3 Compliant
- Moisture sensitivity: MSL 1
Substitute parts are categorized as follows:
Upgrade Substitute: KTR03EZPF5103 (Rohm Semiconductor) — Active product with identical electrical specifications and added high-voltage feature capability.
Direct Substitutes: CRCW0603510KFKEA (Vishay Dale), ERJ-3EKF5103V (Panasonic Electronic Components), RMCF0603FT510K (Stackpole Electronics Inc) — All meet core electrical and mechanical parameters with active product status and AEC-Q200 automotive rating.
Similar Substitutes: CR0603-FX-5103ELF (Bourns Inc.), RC0603FR-07510KL (YAGEO) — Meet all core electrical and mechanical parameters with moisture-resistant feature designation instead of explicit AEC-Q200 rating.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff (ppm/°C) | Operating Temp (°C) | AEC-Q200 | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX5103 | Rohm Semiconductor | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Yes | Discontinued | 878 |
| KTR03EZPF5103 | Rohm Semiconductor | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Yes | Active | 906 |
| CRCW0603510KFKEA | Vishay Dale | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Yes | Active | 79980 |
| ERJ-3EKF5103V | Panasonic Electronic Components | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Yes | Active | 144676 |
| RMCF0603FT510K | Stackpole Electronics Inc | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Yes | Active | 262937 |
| CR0603-FX-5103ELF | Bourns Inc. | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | No | Active | 18010 |
| RC0603FR-07510KL | YAGEO | 510 kOhms | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | No | Active | 16864 |
Engineering Selection Recommendations
For applications requiring strict AEC-Q200 automotive compliance, select from the direct substitutes: CRCW0603510KFKEA, ERJ-3EKF5103V, or RMCF0603FT510K. All three maintain active product status with full automotive qualification matching the original MCR03EZPFX5103 specification.
The upgrade substitute KTR03EZPF5103 from Rohm Semiconductor provides continuity within the same manufacturer ecosystem while maintaining all electrical and mechanical equivalence with added high-voltage capability.
For non-automotive applications or where moisture-resistant designation is acceptable, CR0603-FX-5103ELF and RC0603FR-07510KL are functionally equivalent alternatives with active availability.
Inventory availability should be considered: RMCF0603FT510K offers the highest stock level (262937 Pcs), followed by ERJ-3EKF5103V (144676 Pcs) and CRCW0603510KFKEA (79980 Pcs).
Frequently Asked Questions (FAQ)
Q: Can I use CR0603-FX-5103ELF or RC0603FR-07510KL as direct replacements for MCR03EZPFX5103 in automotive applications?
A: These parts meet all core electrical and mechanical parameters (510 kOhms ±1%, 0.1W, 0603 package, ±100ppm/°C, -55°C to 155°C). However, they are designated as moisture-resistant rather than explicitly AEC-Q200 rated. Use only if your application does not mandate explicit AEC-Q200 certification.
Q: What is the difference between the MCR03EZPFX5103 and KTR03EZPF5103?
A: Both are Rohm Semiconductor products with identical electrical specifications (510 kOhms ±1%, 0.1W, 0603 package). The KTR03EZPF5103 is the active product successor with added high-voltage feature capability and is available in Tape & Reel packaging.
Q: Are all substitute parts available in the same packaging as the original?
A: No. The original MCR03EZPFX5103 packaging is not specified. Substitute parts are available in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats. Verify packaging compatibility with your procurement and assembly requirements.
Q: Which substitute offers the best inventory availability?
A: RMCF0603FT510K (Stackpole Electronics Inc) has the highest inventory level at 262937 Pcs, followed by ERJ-3EKF5103V (Panasonic) at 144676 Pcs.
Q: Do all substitutes meet RoHS3 compliance?
A: Yes. All listed substitute parts are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.
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