ERJ3BWFR082V Panasonic Resistor (Resistor Chip) In Stock
The ERJ3BWFR082V is a high-precision thick film surface mount resistor by Panasonic in 0603 package with 82 mOhm resistance, 1% tolerance, 0.25 W power rating, and 150 ppm/°C temperature coefficient for current sensing and precision power measurement applications.
- Manufacturer
- Panasonic
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERJ3BWFR082V Datasheet PDF
- Category
- Resistor
- Temp Range
- -55.0°C to 155.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 82 mOhm resistance enabling accurate current sensing with minimal power dissipation in high-current paths
- 1% tight tolerance with 150 ppm/°C temperature coefficient for high-precision measurement applications
- 0.25 W power rating in compact 0603 package (1.6 mm x 0.8 mm x 0.55 mm) for dense board layouts
- High-precision thick film construction in the ERJ3B series for consistent performance in industrial and automotive designs
Applications
The ERJ3BWFR082V is designed for current sensing and monitoring circuits in battery management systems, motor drives, and DC power supplies where precise 82 mOhm shunt measurement is required at 0.25 W. Its 1% tolerance and 150 ppm/°C stability make it suitable for overcurrent protection and power monitoring circuits in industrial control equipment. The 0603 SMD package supports automated assembly in portable devices, IoT power modules, and automotive electronics requiring compact, accurate current measurement.
Specifications
| Reach Compliance Code | Compliant |
| Factory Lead Time | 18Weeks |
| YTEOL | 12 |
| Additional Feature | HIGH PRECISION |
| Construction | Rectangular |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 0.55mm |
| Package Length | 1.6mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 0.8mm |
| Packing Method | TR, PUNCHED, 7 INCH |
| Rated Power Dissipation (P) | 0.33W |
| Rated Temperature | 70°C |
| Reference Standard | AEC-Q200, IEC60115-8 |
| Resistance | 0.082Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 0603 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | 0,150 ppm/°C |
| Terminal Finish | TIN |
| Terminal Shape | WRAPAROUND |
| Tolerance | 1% |
| Working Voltage | 0.1645V |
| Package | Resistor Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.21.00.30 |
| Country of Origin | Japan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 82 mOhm resistance of the ERJ3BWFR082V enable current sensing in a battery management system?
In a battery management system, the ERJ3BWFR082V placed in series with the main current path generates 82 mV per 1 A of current, providing a measurable voltage for an ADC or current sense amplifier. At a 0.25 W power dissipation limit, the resistor safely handles up to approximately 1.75 A continuous current, suitable for monitoring lithium-ion cell balancing currents and pack-level charge/discharge rates within BMS designs.
For a precision power monitoring circuit, how does the 150 ppm/°C TCR of the ERJ3BWFR082V affect measurement accuracy over temperature?
A 150 ppm/°C temperature coefficient means the 82 mOhm resistance changes by 0.015% per degree Celsius. Over a 100°C operating range from -25°C to +75°C, total resistance drift is approximately 1.5%, which adds to the base 1% tolerance. For high-precision current measurement in industrial instrumentation, this combined error budget must be accounted for, and temperature compensation in firmware can minimize the impact on 16-bit or higher ADC measurement chains.
When evaluating the ERJ3BWFR082V versus a 0402 shunt resistor of equal value, what board design trade-offs arise?
The ERJ3BWFR082V in 0603 (1.6 mm x 0.8 mm) offers 0.25 W power handling, while equivalent 0402 shunt resistors typically support only 0.0625 W to 0.1 W. For current sensing paths exceeding 1 A where the shunt generates more than 82 mW, the 0603 ERJ3BWFR082V safely dissipates heat without derating, avoiding measurement error from resistance rise. Designers must balance 0603 footprint size against the 0402 space savings when board real estate is constrained.
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