Additional Resources: Product Page date 01/04/2021 page 1 of 5 MODEL: CMS-20103-078SP DESCRIPTION: SPEAKER FEATURES 8 ohm rated impedance 0.7 W rated power 500 Hz resonance frequency SPECIFICATIONS parameter conditions/description min typ max units max power: IEC-60268-5, filter 60 seconds on, input power 0.7 1.0 W 120 seconds off, 10 cycles (room temp) impedance at 2.0 kHz 6.8 8 9.2 resonant frequency (Fo) at 1.0 V, in free air 440 550 660 Hz frequency response Fo 20,000 Hz sound pressure level at 0.7 W, 10 cm, avg at 1.0 kHz in 1 cc closed box 87 90 93 dB distortion at 1.0 kHz, rated power, 0.1 m, in 1 cc closed box 10 % must be normal at sine wave, Fo~10 kHz, in 1 cc buzz, rattle, etc. 2.36 V closed box polarity cone moves forward w/ positive dc current to + terminal dimensions 20.0 x 10.0 x 3.0 mm magnet Nd-Fe-B frame material PPA cone material PEEK terminal solder pads weight 1.7 g operating temperature -30 70 C storage temperature -40 80 C hand soldering for maximum 3 seconds 370 380 390 C RoHS yes Notes: 1. All specifications measured at 5~35C, humidity at 45~85%, under 86~106 kPa pressure, unless otherwise noted. cuidevices.comAdditional Resources: Product Page CUI Devices MODEL: CMS-20103-078SP DESCRIPTION: SPEAKER date 01/04/2021 page 2 of 5 MECHANICAL DRAWING units: mm tolerance: 0.5 mm cuidevices.com