ERJ3BWFR033V Panasonic Resistor (Resistor Chip) In Stock
ERJ3BWFR033V is a 0603 thick film fixed resistor by Panasonic with 33 mΩ resistance and ±1% tolerance rated at 0.25 W. Key specs: ±250 ppm/°C temperature coefficient, 1.6 mm x 0.8 mm SMD package, high-precision current sensing. From $0.10, in stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERJ3BWFR033V Datasheet PDF
- Category
- Resistor
- Price
- From $0.1170(MOQ 500)
- Temp Range
- -55.0°C to 155.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ERJ3BWFR033V?
- Ultra-low 33 mΩ resistance with ±1% tolerance enables high-precision current sensing in 0603 SMD package
- 0.25 W power rating in compact 1.6 mm x 0.8 mm footprint delivers high power density for space-constrained current shunt applications
- ±250 ppm/°C temperature coefficient ensures stable resistance across operating temperature range for accurate current measurement in automotive and industrial designs
What is ERJ3BWFR033V used for?
The ERJ3BWFR033V is primarily used as a current sense shunt resistor in battery management systems, motor controllers, and power monitors where precise low-resistance measurements are needed. Its 33 mΩ value produces measurable voltage drops at currents above 100 mA without excessive power dissipation, making it ideal for over-current protection and coulomb counting circuits. The 0603 footprint integrates easily into compact PCB designs for portable devices and automotive electronics requiring accurate current feedback.
What are the specifications of ERJ3BWFR033V?
| 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 | 0.033Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 0603 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | 0,250 ppm/°C |
| Terminal Finish | TIN |
| Terminal Shape | WRAPAROUND |
| Tolerance | 1% |
| Working Voltage | 0.1044V |
| 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 |
Where can I find the ERJ3BWFR033V datasheet?
ERJ3BWFR033V Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for ERJ3BWFR033V?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what current level does the ERJ3BWFR033V reach its 0.25 W power rating limit?
The ERJ3BWFR033V with 33 mΩ resistance reaches its 0.25 W power limit at approximately 2.75 A, calculated from P = I² × R (0.25 = I² × 0.033). For battery management systems and power monitors, operating below 2.5 A ensures a safe thermal margin, while the resulting 82.5 mV voltage drop at that current is easily measured by common 16-bit ADCs.
How does the ±1% tolerance and ±250 ppm/°C temperature coefficient of ERJ3BWFR033V affect current measurement accuracy in a -40°C to +85°C industrial environment?
With a ±250 ppm/°C temperature coefficient, the 33 mΩ resistance of ERJ3BWFR033V shifts by up to ±3125 ppm (±0.31%) across a -40°C to +85°C range (125°C span). Combined with the ±1% initial tolerance, worst-case total error is approximately ±1.31%, which is acceptable for battery state-of-charge monitoring but may require calibration compensation in precision metering requiring sub-0.5% accuracy.
Can ERJ3BWFR033V replace a 0.05 Ω current sense resistor for lower power loss in a 1 A motor drive circuit?
Yes, replacing a 0.05 Ω (50 mΩ) resistor with ERJ3BWFR033V (33 mΩ) reduces power dissipation at 1 A from 50 mW to 33 mW—a 34% reduction. The trade-off is a smaller sense voltage of 33 mV versus 50 mV at 1 A, so the amplifier gain on the current sense signal would need to be increased by approximately 1.5× to maintain the same ADC input range.
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About Panasonic
Panasonic is a leading electronic component manufacturer. FindMyChip sources Panasonic ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $0.2500 | $125.00 |
| 1000+ | $0.2320 | $232.00 |
| 2000+ | $0.2240 | $448.00 |
| 5000+ | $0.1170 | $585.00 |
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