New WAT Series – Current Sense Resistors by ISABELLENHÜTTE
Resistors in Space-Saving SMD Design
With the launch of the WAT series, ISABELLENHÜTTE expands its proven WAx product line and sets new benchmarks in the field of high-power current sense resistors in space-saving SMD design. Featuring outstanding thermal performance, ultra-low inductance, and an exceptional temperature coefficient (TCR), the WAT series is the ideal solution for demanding high-current applications in both automotive and industrial environments.
Technical Highlights
- High power dissipation: up to 10W in a 2512 package (thermal resistance only 6K/W)
- Precision TCR: 0 ± 50ppm/K (for the 200µΩ version)
- Ultra-low self-inductance: just 0.5nH – ideal for high-frequency applications
- Excellent thermal stability: highly robust against temperature fluctuations
- Optimized heat dissipation: large terminal pads (3.05×2.75mm) support thermal vias
- Wide resistance range: available from 0.2 to 0.75mΩ
Explore more about CODICO’s Shunt Resistors.
Design Advantages
- Maximum power density in a compact 2-terminal SMD footprint
- Highly accurate current measurement thanks to minimal resistance drift
- Superior signal integrity, even under fast switching conditions
- Perfect fit for space- and cost-sensitive designs
Typical Applications
- Automotive: EPS systems, cooling fans, electronic latches (E-Latch)
- Drive technology: motor control and inverters in drones, e-bikes, and e-scooters
- Power modules: high-current applications in industrial and mobile systems
Award-Winning Technology
The WAT series builds on the success of the WAx platform. In 2025, the WAx series was honored by Elektroniknet.de as “Product of the Year” in the Passive Components category – a recognition of outstanding engineering and innovation.
How Does the WAT Series Enable Accurate Current Sensing in Compact SMD Designs?
The WAT series combines high power dissipation, low inductance, and precise thermal behavior in a compact 2512 SMD footprint. It is optimized for accurate current measurement and long-term reliability under thermal stress – making it ideal for applications such as automotive power electronics, motor control, and industrial power modules.
Your Contact Person
If you’re considering adding the WAT series to your system design, Matteo Nervo will be glad to assist you.
