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