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MCR03EZPFX3003 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX3003 is a 300 kOhms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets automotive AEC-Q200 qualification and operates across -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 | 300 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 is determined by strict equivalence across the following parameters: resistance value (300 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).
Substitute parts are grouped into three categories:
Upgrade Substitute: KTR03EZPF3003 (Rohm Semiconductor) — Same manufacturer as primary part, active product status, identical electrical specifications with additional high voltage feature.
Direct Substitutes: CRCW0603300KFKEA (Vishay Dale), ERJ-3EKF3003V (Panasonic Electronic Components), RMCF0603FT300K (Stackpole Electronics Inc) — All meet complete parameter equivalence with active product status and full AEC-Q200 compliance.
Similar Substitutes: CR0603-FX-3003ELF (Bourns Inc.), RC0603FR-07300KL (YAGEO) — Meet all electrical and mechanical parameters; feature moisture-resistant composition instead of standard thick film; active product status.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Operating Temp | AEC-Q200 | RoHS3 | MSL | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX3003 | Rohm Semiconductor | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | Yes | Yes | 1 | Discontinued |
| KTR03EZPF3003 | Rohm Semiconductor | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | Yes | Yes | 1 | Active |
| CRCW0603300KFKEA | Vishay Dale | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | Yes | Yes | 1 | Active |
| ERJ-3EKF3003V | Panasonic Electronic Components | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | Yes | Yes | 1 | Active |
| RMCF0603FT300K | Stackpole Electronics Inc | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | Yes | Yes | 1 | Active |
| CR0603-FX-3003ELF | Bourns Inc. | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | No | Yes | 1 | Active |
| RC0603FR-07300KL | YAGEO | 300 kOhms | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C to 155°C | No | Yes | 1 | Active |
Engineering Selection Recommendations
For applications requiring strict AEC-Q200 automotive compliance, select from KTR03EZPF3003, CRCW0603300KFKEA, ERJ-3EKF3003V, or RMCF0603FT300K. All four parts maintain full automotive qualification and active product status.
KTR03EZPF3003 provides continuity with the original manufacturer (Rohm Semiconductor) while offering active availability and high voltage capability.
CRCW0603300KFKEA (Vishay Dale), ERJ-3EKF3003V (Panasonic), and RMCF0603FT300K (Stackpole) are established direct substitutes with extensive inventory and proven field reliability across automotive applications.
CR0603-FX-3003ELF and RC0603FR-07300KL are suitable for non-automotive applications or where moisture-resistant composition provides additional design margin. These parts do not carry AEC-Q200 certification.
Frequently Asked Questions (FAQ)
Q: Can CR0603-FX-3003ELF or RC0603FR-07300KL be used in automotive applications requiring AEC-Q200?
A: No. These parts lack AEC-Q200 certification. For automotive applications, use KTR03EZPF3003, CRCW0603300KFKEA, ERJ-3EKF3003V, or RMCF0603FT300K.
Q: Are all substitute parts pin-compatible with MCR03EZPFX3003?
A: Yes. All substitutes use the 0603 (1608 Metric) package with 2 terminations and identical footprint dimensions, ensuring direct PCB compatibility.
Q: What is the difference between the MCR03EZPFX3003 and KTR03EZPF3003?
A: Both are Rohm Semiconductor products with identical electrical specifications. KTR03EZPF3003 is the active product with high voltage capability, while MCR03EZPFX3003 is discontinued.
Q: Do all substitutes meet ROHS3 compliance?
A: Yes. All listed substitutes are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level).
Q: What packaging options are available for substitutes?
A: KTR03EZPF3003 and ERJ-3EKF3003V are supplied in Tape & Reel (TR). CRCW0603300KFKEA and RMCF0603FT300K are supplied in Cut Tape (CT) & Digi-Reel. CR0603-FX-3003ELF is supplied in Tape & Reel (TR). RC0603FR-07300KL is supplied in Cut Tape (CT) & Digi-Reel.
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