CM1210 & CM1812 Automotive Common Mode Chokes Laird Performance Materials CM1210 and CM1812 Automotive Common Mode Chokes offer 50VDC or 80VDC rated voltages and up to 0.36A rated current. These chokes improve performance and reliability in a low-profile, compact design ideal for automotive electronics. CM1210 and CM1812 chokes feature a magnetic wire-wound structure and superior common-mode noise suppression over broadband frequency. Laird CM1210 and CM1812 Automotive Common Mode Chokes perform over an extended operating temperature range and are ideal for telecoms and industrial signal lines.