WSR35L000FEA Vishay Resistor (Resistor Chip) In Stock
Vishay WSR35L000FEA is a 5 Watt surface mount current sense chip resistor with a 5 milliohm resistance value and high precision for power management circuits. It features a rectangular SMT package measuring 11.56 mm x 6.98 mm x 2.41 mm with REACH-compliant construction. Available worldwide for motor drives, battery management, and DC-DC converter current sensing applications.
- Manufacturer
- Vishay
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- WSR35L000FEA Datasheet PDF
- Category
- Resistor
- Temp Range
- -65.0°C to 275.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5 milliohm ultra-low resistance value for precise current sensing with minimal power loss
- 5 W power rating in a compact 11.56 mm x 6.98 mm SMT chip package for high-current applications
- REACH-compliant and RoHS-compatible construction for environmentally safe production
- Surface mount chip design enables automated PCB assembly in high-density current monitoring circuits
Applications
The WSR35L000FEA is used in high-current power monitoring circuits, motor drive controllers, and battery management systems where accurate current sensing with minimal voltage drop is critical. Its 5 milliohm resistance produces only 5 mV drop at 1 A, making it suitable for precision shunt measurement in DC-DC converters and power inverters. It is also used in solar charge controllers and EV battery packs where efficient current measurement at currents up to 30 A or more is required.
Specifications
| Reach Compliance Code | Compliant |
| YTEOL | 7.2 |
| Construction | Chip |
| JESD-609 Code | e2 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 2.41mm |
| Package Length | 11.56mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 6.98mm |
| Packing Method | TR, EMBOSSED PLASTIC, 13 INCH |
| Rated Power Dissipation (P) | 3W |
| Rated Temperature | 70°C |
| Reference Standard | AEC-Q200 |
| Resistance | 0.005Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 4527 |
| Surface Mount | YES |
| Technology | METAL STRIP |
| Temperature Coefficient | 110ppm/°C |
| Terminal Finish | Tin/Silver (Sn/Ag) |
| Terminal Shape | WRAPAROUND |
| Tolerance | 1% |
| Working Voltage | 0.1225V |
| Package | Resistor Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.21.00.30 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much voltage drop does the WSR35L000FEA produce at 10 A of current, and is it suitable for high-efficiency power designs?
At 10 A of current, the WSR35L000FEA produces 50 mV of voltage drop (V = 10 A x 5 mΩ), and dissipates only 0.5 W of the rated 5 W power capacity. This minimal voltage drop and power loss make it highly suitable for high-efficiency power conversion designs where shunt resistor losses must be kept below 1% of total power throughput, such as in DC-DC converters operating at 12 V or 24 V rails.
What package dimensions does the WSR35L000FEA have, and how does this affect thermal management on the PCB?
The WSR35L000FEA measures 11.56 mm long by 6.98 mm wide by 2.41 mm tall, providing a large bottom contact area of approximately 80 mm² for effective heat transfer to the PCB copper pour. At maximum 5 W dissipation, a 2 oz copper ground plane of at least 10 cm² is recommended to keep the resistor body below 125°C. Thermal vias under the component further reduce junction-to-board thermal resistance.
For a 30 A motor drive, how should WSR35L000FEA be used in a parallel configuration to extend current handling?
For 30 A motor drive current sensing, two WSR35L000FEA resistors can be connected in parallel, resulting in a 2.5 milliohm effective shunt resistance while distributing 450 mW per resistor, well within each device's 5 W rating. The parallel arrangement keeps individual power dissipation at 15% of rated capacity, improving reliability and extending MTBF. Both resistors should be placed symmetrically with equal trace lengths to ensure balanced current sharing across the 30 A load.
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