8JSA33.R0045D100-0
The B & R Automation 8JSA33.R0045D100-0 is a precision current sensing element within the 8JS Synchronous Motors series, offering an ultra-low resistance of 0.0045 Ω for highly accurate current measurement applications. Manufactured by B & R Automation, this component features a robust 4-terminal (Kelvin) package designed for surface mounting on high-density boards. With a power rating of 10 W and a resistance tolerance of ±1%, it delivers consistent performance even under stringent load conditions. The resistor’s compact footprint of 71.1 mm x 12.7 mm and a profile height of 3.10 mm maximizes board area utilization while maintaining mechanical stability. Early integration into motor drives, inverters, and industrial automation systems is facilitated by its standard Product Type: 8JS Series Synchronous Motor compatibility and flange mounting provisions when required.
Performance characteristics focus on minimizing measurement error and maintaining signal integrity across a broad thermal range. The temperature coefficient of ±150 ppm/°C ensures negligible resistance drift from -65°C to +170°C, supporting harsh industrial environments. Above 100°C, the component features a power derating of 0.8 W/°C, enabling designers to predict thermal behavior accurately. Its intrinsic inductance of 2.5 nH (typical) supports high-speed switching without introducing significant reactive impedance. Superior insulation resistance of over 10 GΩ at 500 VDC preserves electrical isolation in precision circuits. The flammability rating of UL 94 V-0 guarantees compliance with safety standards and secures the resistor against flame propagation.
Reliability is further enhanced by self-cooling capabilities, ensuring passive heat dissipation under continuous operation. The Mounting Style: Flange mounting option complements standard surface-mount configurations for flexible system integration. Compatible with encoder-based feedback loops—leveraging Encoder System: Resolver or angular position measurements down to 10 angular minutes—this resistor supports precise motor control schemes. The keyed shaft and flange provisions allow seamless coupling with existing motor assemblies, supporting nominal speeds up to 4500 RPM and accommodating a broad set of industrial automation applications. Whether deployed in embedded power monitoring, motor control, or inverter designs, the 8JSA33.R0045D100-0 offers the reliability and performance essential for modern industrial systems.
