Additional Resources: Product Page 3D Model PCB Footprint date 01/07/2020 page 1 of 5 MODEL: CMI-1240-SMT DESCRIPTION: PIEZO BUZZER INDICATOR FEATURES low current washable internally driven SPECIFICATIONS parameter conditions/description min typ max units rated voltage 12 Vdc operating voltage 3 16 Vdc current consumption at rated voltage 18 mA rated frequency 3,800 4,000 4,200 Hz sound pressure level at 10 cm, rated voltage 90 dB dimensions 16.9 x 16.9 x 7.8 mm weight 3.2 g material PPS UL-94 V-0 (black) terminal SMT type (Au plating) operating temperature -30 70 C storage temperature -40 80 C RoHS yes Notes: 1. All specifications measured at 5~35C, humidity at 45~85%, under 86~106 kPa pressure, unless otherwise noted. 2. Add suffix -TR to the model number for tape & reel packaging, otherwise packaging will be in tubes. SOLDERABILITY parameter conditions/description min typ max units reel storage at relative humidty <60% 30 C 3 reflow soldering see recommended reflow soldering profile 260 C 4 drying conditions bake at 40C for 24 hours Note: 3. It is recommended to reflow solder within 48 hours from opening vacuum packaging at a temperature <30C & relative humidity <60%. 4. When out of packaging for more than 48 hours. SMT Reflow Solder Profile (Pb Free) Peak Temp 260C 255C 20~40 sec 217C 200C 150C 60~180 sec 60~150 sec Time (sec) cuidevices.com Temperature (C)Additional Resources: Product Page 3D Model PCB Footprint CUI Devices MODEL: CMI-1240-SMT DESCRIPTION: MAGNETIC BUZZER INDICATOR date 01/07/2020 page 2 of 5 MECHANICAL DRAWING units: mm tolerance: 0.5 mm RECOMMENDED PCB LAYOUT (Top View) PERFORMANCE CURVES Voltage vs. Sound Pressure Level Voltage vs. Current Consumption 20 100 18 90 80 16 14 70 12 60 10 50 40 8 30 6 4 20 2 10 0 0 3 6 9 12 16 3 6 9 12 16 Voltage (Vdc) Voltage (Vdc) cuidevices.com Sound Pressure Level (dB) Current Consumption (mA)