CUI’s CMEJ omnidirectional electret condenser microphones come in compact packages with diameters as small as 4 mm and depths as low as 1.3 mm. Available in surface-mount, solder pad, pin-type, or wire-lead termination packages, these highly economical microphones feature signal-to-noise ratios ranging from 60 dBA to 70 dBA, 0.5 µA current consumption, and a 2.2 KΩ output impedance.