8JSA33.R0045D100-0
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The 8JSA33.R0045D100-0 synchronous motor features a resistance of 0.0045 Ohms, a power rating of 10 W, a tolerance of ±1%, and an operating temperature range from -65°C to +170°C. Part of the 8JS Synchronous Motors series by B & R Automation, it boasts surface mount capability and dimensions of 71.1mm x 12.7mm.
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Product Description:
When used with 8JS Synchronous Motors, the B&R Automation 8JSA33.R0045D100-0 is a highly precise surface mount current sensing resistor.
This resistor has an ultra-low resistance value of 0.0045 ohms with a power rating of 10 W, making it ideal for current measurement, whose accuracy is very sensitive to minimizing the power loss, a critical component of motor drives, inverters, and energy management systems. The ±1% tolerance of resistance and the advanced temperature coefficient of ±50 ppm/°C mean good performance and reliability over a broad temperature range. This component has operating temperatures that vary between -65°C to +170°C, hence it can be used in harsh industrial conditions where thermal performance is vital. The resistor is embodied in a small SMD 4-terminal package (Kelvin connection), allowing to enhanced measuring precision as the resistances of measurement lead wires cannot contribute to errors. Its size, 71.1 mm x 12.7 mm size, along with the height that is only 3.10 mm high, permits optimal utilization of board area in high-density layouts.
The 4-terminal connection can improve the accuracy of current sensing in low resistance, high current applications as well. Having an inductance of only 2.5nH (typical), this component can be used in high-speed switching applications without introducing reactive effects that affect system performance excessively. Its insulation resistance is superior at over 10 GΩ at 500 VDC, and, in precision circuits, guarantees signal integrity and electrical isolation. Above 100 °C, power performance is derated at 0.8 W per °C, at which point engineers can provide thermal constraints in system design. Conforming to the requirements of UL 94 V-0 flammability, the 8JSA33.R0045D100-0 provides a secure and strong implementation in embedded power monitoring and motor control.
Frequently Asked Questions about 8JSA33.R0045D100-0:
Q: What is the resistance value and tolerance of the 8JSA33.R0045D100-0?
A: The 8JSA33.R0045D100-0 has an ultra-low resistance of 0.0045 ohms and a tight tolerance of ±1%, ideal for precision current sensing.
Q: What kind of connection does the 8JSA33.R0045D100-0 use?
A: It uses a 4-terminal (Kelvin) connection, which improves accuracy by eliminating voltage drops from lead resistance in measurement paths.
Q: How does the 8JSA33.R0045D100-0 perform in high-temperature environments?
A: It operates from -65°C to +170°C and derates above 100°C at 0.8 W per °C, ensuring reliable performance in thermally demanding conditions.
Q: Is the 8JSA33.R0045D100-0 suitable for high-speed switching applications?
A: Yes, with a typical inductance of just 2.5 nH, it’s optimized for use in fast-switching circuits without introducing excessive reactive behavior.
Q: What are the physical dimensions and mounting type of the 8JSA33.R0045D100-0?
A: It’s a surface-mount resistor in a compact 71.1 mm x 12.7 mm x 3.1 mm package, ideal for space-constrained, high-density PCB designs.
