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ERJ-S03J4R3V Equivalent & Substitute Parts
Part Overview
The ERJ-S03J4R3V is a 4.3 Ohm thick film chip resistor manufactured by Panasonic Electronic Components in the 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with ±5% tolerance and features anti-sulfur coating with AEC-Q200 automotive qualification. The part is currently in active production status with 1128 pieces available in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required but alternative packaging configurations or series designations are acceptable for system integration.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 4.3 Ohms |
| Tolerance | ±5% |
| Power Rating | 0.1W (1/10W) |
| Package / Case | 0603 (1608 Metric) |
| Composition | Thick Film |
| Features | Anti-Sulfur, Automotive AEC-Q200 |
| Temperature Coefficient | -100 / +600 ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the ERJ-S03J4R3V is permissible when the following electrical and mechanical parameters remain constant across alternative part numbers:
- Resistance value: 4.3 Ohms
- Tolerance: ±5%
- Power rating: 0.1W (1/10W)
- Package format: 0603 (1608 Metric)
- Composition: Thick Film
- Features: Anti-Sulfur, Automotive AEC-Q200
- Temperature coefficient: -100 / +600 ppm/°C
- Operating temperature range: -55°C ~ 155°C
- RoHS compliance: ROHS3 Compliant
- Moisture sensitivity level: 1 (Unlimited)
The ERJ-U03J4R3V qualifies as a direct substitute based on identical electrical specifications and mechanical dimensions. The primary distinction between these parts is the series designation (ERJ-S03 versus ERJ-U03) and packaging configuration (standard versus Tape & Reel format).
Parameter Comparison
| Parameter | ERJ-S03J4R3V | ERJ-U03J4R3V |
|---|---|---|
| Manufacturer | Panasonic Electronic Components | Panasonic Electronic Components |
| Resistance | 4.3 Ohms | 4.3 Ohms |
| Tolerance | ±5% | ±5% |
| Power Rating | 0.1W (1/10W) | 0.1W (1/10W) |
| Package / Case | 0603 (1608 Metric) | 0603 (1608 Metric) |
| Composition | Thick Film | Thick Film |
| Features | Anti-Sulfur, Automotive AEC-Q200 | Anti-Sulfur, Automotive AEC-Q200 |
| Temperature Coefficient | -100 / +600 ppm/°C | -100 / +600 ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C | -55°C ~ 155°C |
| Size / Dimension | 0.063" L x 0.031" W (1.60mm x 0.80mm) | 0.063" L x 0.031" W (1.60mm x 0.80mm) |
| Height - Seated (Max) | 0.022" (0.55mm) | 0.022" (0.55mm) |
| Number of Terminations | 2 | 2 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the ERJ-S03J4R3V and ERJ-U03J4R3V are active production components manufactured by Panasonic Electronic Components with identical electrical and mechanical specifications. Selection between these parts is determined by packaging and supply chain requirements rather than functional performance.
The ERJ-S03J4R3V is suitable for applications requiring standard packaging with 1128 pieces currently in stock inventory. The ERJ-U03J4R3V is supplied in Tape & Reel (TR) format with higher inventory availability (6066 pieces in stock), making it appropriate for high-volume automated assembly processes.
Both parts maintain full compliance with ROHS3 regulations, AEC-Q200 automotive qualification, and REACH unaffected status. The identical temperature coefficient (-100 / +600 ppm/°C) and operating temperature range (-55°C ~ 155°C) ensure equivalent thermal performance across automotive and industrial applications.
Frequently Asked Questions (FAQ)
Q: Can ERJ-U03J4R3V replace ERJ-S03J4R3V in circuit design?
A: Yes. The ERJ-U03J4R3V provides identical electrical performance and mechanical fit. Both parts deliver 4.3 Ohms ±5% at 0.1W power rating in the 0603 package format with matching temperature coefficients and operating ranges.
Q: What is the primary difference between these substitute parts?
A: The ERJ-S03J4R3V and ERJ-U03J4R3V differ in series designation and packaging configuration. The ERJ-S03J4R3V uses standard packaging, while the ERJ-U03J4R3V is supplied in Tape & Reel format for automated assembly operations.
Q: Are both parts suitable for automotive applications?
A: Yes. Both the ERJ-S03J4R3V and ERJ-U03J4R3V carry AEC-Q200 automotive qualification and anti-sulfur coating, meeting automotive reliability and environmental requirements.
Q: Do these parts have identical physical dimensions?
A: Yes. Both parts measure 0.063" L x 0.031" W (1.60mm x 0.80mm) with a maximum seated height of 0.022" (0.55mm), ensuring identical PCB footprint compatibility.
Q: Which part should be selected for high-volume production?
A: The ERJ-U03J4R3V in Tape & Reel format is optimized for high-volume automated assembly with 6066 pieces in current stock inventory, compared to 1128 pieces for the standard packaged ERJ-S03J4R3V.
Q: Are moisture sensitivity levels equivalent?
A: Yes. Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture precautions are required during storage or handling.
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