Same Sky 4mm Micro Buzzer | Digi-Key Daily

Same Sky offers one of the smallest micro buzzers in the industry. The CMT-4023S-SMT is a magnetic transducer buzzer housed in a compact 4mm x 4mm surface mount package with a low 2mm profile. This externally driven device operates at a frequency of 4000 Hz and has a 70dB sound pressure level at 10 centimeters. When operating at its typical rated voltage of 3 VDC, this 17-ohm coil buzzer consumes 90mA of current. With an operating temperature range of -20⁰C to 70⁰C and weighing only 0.07 grams this micro buzzer is ideal for portable equipment operations.