器件名称: CEB-27D44
功能描述: piezo electric diaphragm
文件大小: 249.48KB 共4页
简 介:Part No: CEB-27D44 Description: piezo electric diaphragm
Date: 7/28/2006 Unit: mm Page No: 1 of 4
Specifications
Maximum input voltage Resonant frequency Resonant impedance Electrostatic capacitance Operating temperature Storage temperature Dimensions Weight Material Terminal DC resistance 20 Vp-p 4.6 ± 0.5 KHz 250 max. 16,000 ±30% pF -20 ~ +70° C -30 ~ +80° C 27.0 x H0.51 mm 2.0 g max. Brass Wire type 20 M min. see Measurement Methods see Measurement Methods at 1 KHz / 1 V
Fluke 45 rate: Fast Measurement time: 1 second (only for ≤ 20 mm test)
RoHS
yes
Appearance Drawing
Tolerance: ±0.5
Phone: 800.275.4899
Fax: 503.612.2381
www.cui.com
20050 SW 112th Ave.
Tualatin, OR 97062
Part No: CEB-27D44 Description: piezo electric diaphragm
Date: 7/28/2006 Unit: mm Page No: 2 of 4
Measuring Methods
1) Resonant frequency / Resonant impedance The piezo electric diaphragm should be clamped at a node point (as shown in the following figure) to be free from any mechanical stress. Measure its resonant frequency and resonant impedance by using a vector impedance analyzer or equivalent. When the input frequency is swept within 100 Hz to 7 KHz, the resonant frequency is defined as the frequency where the impedance shows minimum value. This impedance should be the resonant impedance.
2) Static capacitance The electrostatic capacitance should be measured at 1 KHz by using an L.C.R. meter (ex. HP4194A(H.P.)) or equivalent. The part should be clamped in the same way as the measurem……
