The RBH ultra-precision current sense resistor series from Alpha Electronics offers low resistances of between 0.01Ω and 1Ω all in a small 4-terminal (Kelvin connection) flip-chip package. By utilising Alpha’s Bulk Metal® foil resistor technology, they are able to offer low tolerances down to ±0.5% as well as a low TCR of ±10 ppm/°C between -25°C and +125°C.
- Ultra-precision current sense flip-chip resistor
- Available in any resistance between 0.01Ω and 1Ω
- 4-terminal (Kelvin connection) current sense resistor in a flip-chip surface-mount package
- Power rating of 1.5W at +70°C
- Tolerances as low as ±0.5% over the whole resistance range of 0.01Ω to 1Ω
- Tight TCR available of ±10 ppm/°C over the resistance range of 0.01Ω to 1Ω
- Maximum rated operating temperature +70°C
- Temperature range from -65°C up to +155°C
The RBH ultra-precision current sense resistor series offer ultra-precision thanks to Alpha’s Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.
Temperature rise of resistor surface can be optimised by using a board made of metal. This keeps the temperature rise very low allowing increased power rating of the parts i.e. 2W at +70°C. Please keep the temperature of board less than +90°C when using glazed epoxy board.
The below table gives the full specifications for each resistor model available including the Alpha RBH series:
* Symbols parenthesized are for part number composition