The automotive industry is experiencing a dramatic increase in demand for low ohmic current sense resistors. This growth is driven primarily by the rapid adoption of hybrid and electric vehicles, which require extensive current monitoring throughout their electrical systems.
Modern vehicles incorporate dozens of current sensing points - from battery management and motor control to power steering, braking systems, and charging circuits. Each of these applications demands resistors that can handle high currents while maintaining measurement accuracy.
HTR India's electron beam welded (EBW) resistors address these needs with a superior size-to-power ratio. The EBW manufacturing process creates a seamless bond between the resistive alloy strip and the copper terminals, resulting in:
- Compact form factors that save valuable PCB space in automotive modules
- Higher power ratings relative to component size compared to thick film alternatives
- Excellent pulse handling capability for transient current conditions
- Outstanding thermal cycling performance critical for under-hood applications
- Very low TCR (Temperature Coefficient of Resistance) ensuring measurement accuracy across the full automotive temperature range (-40C to +155C)
The automotive industry's quality requirements are among the most stringent in electronics manufacturing. HTR's shunt resistors are manufactured in an IATF 16949:2016 certified facility, ensuring consistent quality and traceability throughout the production process.
Key product families for automotive applications include: - HBM series (Size 1216) - AEC-Q200 qualified, 5W permanent power, constant current up to 100A - HRE series (Size 4026) - Open-frame EBW type, up to 12W at 70C - HBE series (Size 2726) - Compact EBW design, up to 12W at 70C - HEE series (Size 5930) - High power EBW type, up to 15W at 70C
As vehicle electrification continues to accelerate, the demand for high-performance current sense resistors will continue to grow, making them an essential component in the automotive supply chain.