What made you select the Ohmite SHA-Series Shunts as a featured product?
I chose the Ohmite SHA series shunts because they solve one of the most persistent problems in high-current power design: maintaining accurate, stable current measurement under dynamic load conditions. In battery management systems, motor drives, and high-power conversion stages, current sensing is not just about measurement, it directly impacts control loop stability, protection thresholds, and system efficiency. These environments push components with high surge currents, rapid switching edges, and significant thermal gradients. Designing around these constraints typically forces tradeoffs between accuracy, bandwidth, and long-term drift. The SHA series addresses these challenges with construction that keeps measurement integrity intact even in electrically and thermally aggressive conditions.
The SHA series stands out due to its material system and construction process. The specialized alloy and heat treatment deliver low current coefficient behavior, which translates to stable resistance across varying load conditions. With rated current support up to 1000 A and the ability to tolerate pulse currents several times higher, these shunts are well suited for transient-heavy applications. The sub-3 nH inductance enables accurate sensing in high-frequency switching environments, while the thermal EMF of less than 0.5 pV per degree C versus copper minimizes measurement error at millivolt signal levels. The four-terminal Kelvin connection ensures precise voltage pickup, and the platform flexibility with multiple sizes, resistance values, and connection options simplifies integration across different system architectures.
What are the key features/specifications of the Ohmite SHA-Series Shunts?
Key Features
- Four-terminal Kelvin connection for high-accuracy current sensing
- Rated current up to 1000 A with pulse current tolerance beyond rated current
- Low inductance below 3 nH for high-frequency performance
- Low thermal EMF less than 0.5 pV per degree C versus copper
- Excellent long-term stability due to specialized alloy and heat treatment
- AEC-Q200 compliant for automotive-grade reliability
What are some common markets/applications of the Ohmite SHA-Series Shunts?
Target Markets & Applications
- Battery management systems
- Motor control systems
- Frequency converters
- Uninterruptible power supplies
- Electronic power systems
- Electronic load equipment
