Additional Resources: Product Page 3D Model PCB Footprint date 01/06/2020 page 1 of 4 MODEL: CSS-I4B20-SMT-TR DESCRIPTION: MAGNETIC BUZZER TRANSDUCER FEATURES large sound port top sound port externally driven SPECIFICATIONS parameter conditions/description min typ max units Vo-p rated voltage 3.6 Vo-p operating voltage 3 5 Vo-p 0V current consumption at rated voltage, 2,730 Hz square wave, duty 80 mA rated frequency 2,730 Hz at 5 cm (A-weight), rated voltage, 2,730 Hz sound pressure level 85 90 dBA square wave, duty coil resistance 17 20 23 dimensions 8.5 x 8.5 x 3 mm weight 0.6 g material LCP (white) terminal SMT type (Au plating) operating temperature -30 70 C storage temperature -40 85 C RoHS yes Notes: 1. All specifications measured at 5~35C, humidity at 45~85%, under 86~106 kPa pressure, unless otherwise noted. SOLDERABILITY parameter conditions/description min typ max units reel storage at relative humidity <60% 30 C 2 reflow soldering see recommended reflow soldering profile 260 C 3 drying conditions bake at 40C for 24 hours Note: 2. It is recommended to reflow solder within 48 hours from opening vacuum packaging at a temperature <30C & relative humidity <60%. 3. 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: CSS-I4B20-SMT-TR DESCRIPTION: MAGNETIC BUZZER TRANSDUCER date 01/06/2020 page 2 of 4 MECHANICAL DRAWING units: mm tolerance: 0.5mm SOUND PORT RECOMMENDED PCB LAYOUT (Top View) FREQUENCY RESPONSE CURVE MEASUREMENT METHOD +VDC +2.5V 180 TR: 0 2SC1741AS cuidevices.com