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MCR03EZPFX3921 Equivalent & Substitute Parts
Part Overview
The MCR03EZPFX3921 is a 3.92 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 | 3.92 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 eligibility for the MCR03EZPFX3921 is determined by strict equivalence across the following parameters:
- Resistance value: 3.92 kOhms
- Tolerance: ±1%
- Power rating: 0.1W
- 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
All substitute parts listed meet these electrical and mechanical specifications. Packaging format (Cut Tape, Tape & Reel, or Digi-Reel) does not affect electrical equivalence but may impact procurement and assembly workflows.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op. Temp Range | Features | Status |
|---|---|---|---|---|---|---|---|---|---|
| MCR03EZPFX3921 | Rohm Semiconductor | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Discontinued |
| MCR03ERTF3921 | Rohm Semiconductor | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Thick Film | Discontinued |
| TRR03EZPF3921 | Rohm Semiconductor | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Anti-Sulfur Thick Film | Obsolete |
| CRCW06033K92FKEA | Vishay Dale | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active |
| CRCW06033K92FKEB | Vishay Dale | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Discontinued |
| ERJ-3EKF3921V | Panasonic Electronic Components | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active |
| RMCF0603FG3K92 | Stackpole Electronics Inc | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active |
| RMCF0603FT3K92 | Stackpole Electronics Inc | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Automotive AEC-Q200 | Active |
| CR0603-FX-3921ELF | Bourns Inc. | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active |
| RC0603FR-073K92L | YAGEO | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active |
| RC1608F3921CS | Samsung Electro-Mechanics | 3.92 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55°C ~ 155°C | Moisture Resistant | Active |
Engineering Selection Recommendations
For applications requiring automotive AEC-Q200 certification, select from active parts with explicit AEC-Q200 ratings: CRCW06033K92FKEA (Vishay Dale), ERJ-3EKF3921V (Panasonic), RMCF0603FG3K92, or RMCF0603FT3K92 (Stackpole Electronics Inc). These parts maintain full compliance with automotive qualification standards.
For non-automotive applications or where moisture resistance is prioritized, CR0603-FX-3921ELF (Bourns), RC0603FR-073K92L (YAGEO), and RC1608F3921CS (Samsung Electro-Mechanics) are active alternatives with moisture-resistant thick film construction.
All listed substitutes are ROHS3 compliant with MSL 1 rating and identical electrical specifications. Selection should prioritize active product status and availability from qualified suppliers.
Frequently Asked Questions (FAQ)
Q: Can MCR03ERTF3921 replace MCR03EZPFX3921? A: Yes. Both parts share identical electrical specifications (3.92 kΩ, ±1%, 0.1W, 0603 package, ±100ppm/°C, -55°C to 155°C). The primary difference is packaging format and product status. MCR03ERTF3921 is available in Cut Tape and Digi-Reel formats.
Q: What is the difference between automotive AEC-Q200 rated parts and moisture-resistant parts? A: Automotive AEC-Q200 rated parts (CRCW06033K92FKEA, ERJ-3EKF3921V, RMCF0603FG3K92, RMCF0603FT3K92) meet automotive qualification standards. Moisture-resistant parts (CR0603-FX-3921ELF, RC0603FR-073K92L, RC1608F3921CS) emphasize environmental protection without automotive certification. Both meet all electrical parameter requirements.
Q: Does packaging format (Cut Tape vs. Tape & Reel) affect electrical performance? A: No. Packaging format affects procurement, storage, and assembly processes only. Electrical specifications remain identical across all packaging options.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitutes are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original MCR03EZPFX3921 specification.
Q: Which substitute has the highest inventory availability? A: ERJ-3EKF3921V (Panasonic) has 69,928 pieces in stock, followed by CRCW06033K92FKEB (Vishay Dale) with 35,448 pieces and RMCF0603FT3K92 (Stackpole) with 64,265 pieces.
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