Current Sensing Resistors (JSR Series)
Product Introduction
The JSR series Z-type sampling resistors are low-resistance, high-precision resistors designed specifically for high-current sensing and precision power control applications. Their unique Z-shaped structure effectively reduces thermal stress and contact resistance, providing excellent heat dissipation and mechanical strength. Made of metal alloy materials, these resistors ensure stable resistance even under high temperature and high load conditions, making them suitable for current sensing circuits in various power supplies, motor control systems, and new energy vehicle systems.
Product Parameters
| Item |
Specification |
| Series |
JSR Series |
| Operating Temperature |
-55℃ ～ +155℃ |
| Structure |
Z-shaped solder lead structure |
| Inductance |
Less than 10nH, low inductance design |
| Lead Material |
Solderable Copper Leads |
| Compliance |
RoHS compliant |
| Short Time Overload |
5 times rated power for 5 seconds. |
Performance Characteristics
Low Inductance and High Stability Design
The JSR series employs a low-inductance structure, maintaining accurate current sensing even in high-frequency or pulse circuits. Stable resistance and a temperature coefficient as low as ±40ppm/°C ensure measurement accuracy over a wide temperature range.
Excellent Heat Resistance and Reliability
The product features excellent heat dissipation, allowing for long-term stable operation in high-power environments. The Z-shaped structure ensures uniform stress distribution during soldering, improving mechanical reliability and lifespan.
Easy Soldering and Environmentally Compliant
Utilizing highly solderable copper leads, it is suitable for automated soldering processes and easy to install. The product also complies with RoHS environmental regulations, meeting green manufacturing requirements.
Typical Applications
- Power Supply and Power Control Systems
Widely used in switching power supplies, DC-DC converters, and industrial power supplies for current sensing and overcurrent protection.
- Motor Drives and Variable Frequency Control
Suitable for servo drives, motor controllers, and UPS systems, enabling precise current feedback.
- New Energy Vehicles and BMS Systems
Provides high-precision current sampling in battery management systems (BMS), charge/discharge control circuits, and energy feedback systems.
- Industrial Automation and Communication Equipment
Used in automated control systems, telecommunications power modules, and testing instruments for high-precision power monitoring and energy detection.
