CSx Current Sense Resistors Stackpole Electronics CSx Current Sense Resistors are all lead- and halogen-free modules and include multiple series: CSRF, CSR, CSRN, CSNL, CSS, and CSSH. CSRF series resistors feature current handling up to 26A, TCR down to ±50ppm/°C, and wide resistance range, and a high power rating of up to 5W. The CSR/CSRN resistors have sizes available that range from 0201 to 1225 and power ratings up to 3W. The CSRN series have sizes 0815, 2010, and 2512 available with narrow terminations.