Additional Resources: Product Page 3D Model date 05/13/2020 page 1 of 3 MODEL: CEB-27FD44 DESCRIPTION: PIEZOELECTRIC DIAPHRAGM FEATURES piezo element with feedback wire 30 Vp-p max operating voltage 4,500 Hz rated frequency SPECIFICATIONS parameter conditions/description min typ max units operating voltage 30 Vp-p resonant frequency only for piezo element without wire 4,000 4,500 5,000 Hz resonant impedance only for piezo element without wire 500 electrostatic capacity at 1000 Hz/1 V 11,200 16,000 20,800 pF dimensions 27 x 0.51 mm weight 2.0 g material brass terminal wire leads operating temperature -20 70 C storage temperature -30 80 C RoHS yes Notes: 1. All specifications measured at 5~35C, humidity at 45~85%, under 86~106kPa pressure, unless otherwise noted. MECHANICAL DRAWING units: mm tolerance: 0.5 mm wire: UL1571 32 AWG Black Blue WIRE CONNECTIONS Color Function Red Red +terminal (M) MTGEP36 Black -terminal (G) Blue feedback (F) cuidevices.comAdditional Resources: Product Page 3D Model CUI Devices MODEL: CEB-27FD44 DESCRIPTION: PIEZOELECTRIC DIAPHRAGM date 05/13/2020 page 2 of 3 MEASURING METHOD Resonant Frequency / Resonant Impedance The piezo electric diaphragm shall be clamped at a node point as shown in the following figure to be free from any mechanical stress, and measured its resonant frequency and resonant impedance by using vector impedance analyzer or equivalent. When the input frequency is swept within 100 Hz to 5 kHz, the resonant frequency is defined as the frequency where the impedance shows the minimum value, and this impedance shall be the resonant impedance. Static Capacitance The electrostatic capacitance shall be measured at 120 Hz by using LCR meter HP4194A(H.P.) or equivalent. This part shall be clamped in the same way as the measurement of resonant frequency and resonant impedance as mentioned above. cuidevices.com