Additional Resources: Product Page 3D Model PCB Footprint date 11/14/2019 page 1 of 5 MODEL: CMS-18138A-SP DESCRIPTION: SPEAKER FEATURES micro-speaker small footprint low profile spring leads SPECIFICATIONS parameter conditions/description min typ max units maximum power: IEC-60268-5, filter 60s on/120s input power 0.8 1.0 W off, 10 cycles at room temp in 1 cc closed box impedance at 2.0 kHz, 1.0 V 6.8 8 9.2 at 1.0 V 400 500 600 Hz resonant frequency (Fo) at 1.0 V in 1 cc closed box 850 1,000 1,150 Hz frequency response output SPL 10 dB Fo 10,000 Hz sound pressure level at 0.8 W, 0.1 m, at 2.0 kHz in 1 cc closed box 89 92 95 dB distortion at 1.0 kHz, 0.8 W 10 % must be normal at sine wave between Fo ~ 20 kHz buzz, rattle, etc. 2.53 V in 1 cc closed box cone will move forward with positive dc current to polarity + terminal dimensions 18 x 13 x 2.5 mm magnet Nd-Fe-B material PPA cone material mylar terminal spring contact weight 1.8 g operating temperature -20 75 C storage temperature -30 85 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 3D Model PCB Footprint CUI Devices MODEL: CMS-18138A-SP DESCRIPTION: SPEAKER date 11/14/2019 page 2 of 5 MECHANICAL DRAWING units: mm tolerance: 0.2 mm s ) UHH KLJK s s s Recommended PCB Layout Top View Note: 1. Maximum compression force between front frame and back frame & yoke is 5 N. cuidevices.com s