Date: 6/25/2007 Part No: CEB-27FD44 Unit: mm Description: piezo electric diaphragm Page No: 1 of 4 Specifications Maximum input voltage Resonant frequency Resonant impedance Electrostatic capacitance Operating temperature Storage temperature Dimensions Weight Material Terminal RoHS 30 Vp-p 4.5 ± 0.5 KHz 500 Ω max. 16,000 ±30% pF -20 ~ +70° C -30 ~ +80° C ø27.0 x H0.51 mm 2.0 g max. Brass Wire type yes see Measurement Methods see Measurement Methods at 1 KHz / 1 V Appearance Drawing Tolerance: ±0.5 UL 1571LF 32AWG Black Blue Red MTGEP36 ---M red wire blue wire ---F black wire ---G Phone: 800.275.4899 Fax: 503.612.2381 www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062 Part No: CEB-27FD44 Date: 6/25/2007 Unit: mm Description: piezo electric diaphragm 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 5 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 120 Hz by using an L.C.R. meter (ex. HP4194A(H.P.)) or equivalent. The part should be clamped in the same way as the measurement or resonant frequency / resonant impedance mentioned above. Mechanical Characteristics Item Solderability Lead Wire Pull Strength Vibration Phone: 800.275.4899 Evaluation Standard Test Condition 90% min. of the stripped wires Stripped wires of lead wires are immersed in will be wet with solder. rosin for 5 seconds and then immersed in (Except the edge of the terminal) solder bath of 270 ±5°C for 3 ±0.5 seconds. No damage or cutting off. The horizontal force of 3.0N (0.306kg) should be applied to the double lead wire for 30 sec. The value of the resonant The diaphragm should be measured after frequency should be ±10% of the applying a vibration amplitude of 1.5 mm with 10 to 55 Hz band of vibration frequency to each initial measurements. Electrostatic capacitance should of the 3 perpendicular directions for 2 hours. be ±20% compared with the initial measurement. The resonant impedance should be 2000Ω max. Fax: 503.612.2381 www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062 Date: 6/25/2007 Part No: CEB-27FD44 Unit: mm Description: piezo electric diaphragm Page No: 3 of 4 Environment Test Item High temp. test Low temp. test Humidity test Temp. cycle test Test Condition After being placed in a chamber at +80°C for 240 hours. After being placed in a chamber at -30°C for 240 hours. After being placed in a chamber at +40°C and 90±5% relative humidity for 240 hours. The part shall be subjected to 5 cycles. One cycle will consist of: Evaluation Standard +80°C +25°C +25°C -30°C 0.5hr 0.5hr 0.25 0.5hr 0.5hr The diaphragm will be measured after being placed at +25°C for 4 hours. The value of the resonant frequency should be ±10%, the value of the electro static capacitance should be ±20% compared to the initial measurements. The resonant impedance should be 2,000 Ω max. 0.5hr 0.25 3hours Test Conditions Standard Test Condition Judgement Test Condition Phone: 800.275.4899 a) Tempurature: +5 ~ +35°C a) Tempurature: +25 ±2°C Fax: 503.612.2381 b) Humidity: 45 - 85% b) Humidity: 60 - 70% www.cui.com c) Pressure: 860-1060 mbar c) Pressure: 860-1060 mbar 20050 SW 112th Ave. Tualatin, OR 97062 Date: 6/25/2007 Part No: CEB-27FD44 Unit: mm Description: piezo electric diaphragm Page No: 4 of 4 Packaging 6x50PCS=300PCS Out Box Out Box 290mm Carton Box (10PCS Out Box) 550 mm mm 330 1. CEB-27FD44 2. Phone: 800.275.4899 RoHS Compliant Out Box 310mmx248mmx49mm Carton Box 550mmx330mmx290mm 300PCSx10=3,000PCS Fax: 503.612.2381 6x50PCS=300PCS www.cui.com 20050 SW 112th Ave. Tualatin, OR 97062