ERJ3BWFR051V Panasonic Resistor (Resistor Chip) In Stock
Panasonic ERJ3BWFR051V is a high-precision 0402 (1005 metric) surface mount chip resistor with 0.051 Ohm resistance and tight tolerance for current sensing applications. Its rectangular 1.6 mm x 0.8 mm x 0.55 mm profile suits compact, high-density PCB designs. Available from stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERJ3BWFR051V 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
- High-precision 0.051 Ohm low-resistance chip resistor in 0402 package (1.6 mm x 0.8 mm) for compact current sensing circuits
- Tight resistance tolerance enables accurate current measurement in power management, motor control, and battery monitoring applications
- Surface mount construction with 0.55 mm package height supports automated SMT assembly on densely populated PCBs
Applications
The ERJ3BWFR051V is used as a current sense resistor in battery management systems, DC-DC converters, and motor drive circuits where a 0.051 Ohm shunt must fit in a minimal PCB footprint. Its high-precision construction ensures consistent measurement accuracy across production batches for closed-loop current control in industrial and consumer power applications. The 0402 chip form factor integrates into compact designs alongside power MOSFETs and current sense amplifiers operating at supply voltages from 3.3 V to 48 V.
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 | 0.051Ω |
| 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 | 0.1297V |
| 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
What resistance value and package size does the ERJ3BWFR051V provide for current sensing designs?
The ERJ3BWFR051V is a 0.051 Ohm resistor in a 0402 package measuring 1.6 mm x 0.8 mm x 0.55 mm. This low-resistance, small-footprint combination is well suited for inline current sensing in battery management and power conversion circuits where minimizing power dissipation at high currents—such as 5 A to 20 A—is critical.
In a 12 V DC motor control design, how does the ERJ3BWFR051V shunt resistor enable overcurrent protection?
At 12 V with a 10 A motor load, the ERJ3BWFR051V develops a sense voltage of 510 mV across its 0.051 Ohm resistance, which a current sense amplifier with gain of 20 V/V converts to a 10.2 V signal suitable for an ADC input. The tight tolerance of the ERJ3BWFR051V ensures the overcurrent threshold remains accurate over temperature, preventing nuisance trips or undetected overloads in the motor drive circuit.
What lead time should procurement teams plan for when ordering the ERJ3BWFR051V in production quantities?
The ERJ3BWFR051V carries a factory lead time of approximately 18 weeks for production orders, which is longer than commodity resistor values. Buyers sourcing this 0.051 Ohm high-precision 0402 chip resistor for volume programs should place purchase orders at least 5 months ahead of build start and consider safety stock to cover demand variability across multiple production runs.
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