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EFRTSB40K5 Datasheet(PDF) 5 Page - Panasonic Semiconductor |
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EFRTSB40K5 Datasheet(HTML) 5 Page - Panasonic Semiconductor |
5 / 5 page Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail. Ð EF76 Ð Ultrasonic Ceramic Sensors Application Notes Because the Ultrasonic Sensors are designed for use in the air, they can not be used under the water or others liquid. 1. Design Engineering Notes 1. Application of DC voltage DC voltage shall not be applied to the Ultrasonic Sensors because insulation resistance may deteriorate. 2. Maximum Input Voltage The Ultrasonic Sensors shall not be operated beyond the specified ÒMaximum Input VoltageÓ in the catalog or the specifications. 3. Characteristics change owing to load impedance Center frequency and sensitivity change in accordance with load impedance. Therefore, the load characteristics chart shall be taken into consideration in designing circuit. 4. In the Design of Transmitting Circuits It shall be noted that the impedance of the device is as low as 500 Ω (approximately) at the resonance frequency. 2. Mounting Notes 1. Installation It is recommended to hold the Ultrasonic Sensors by means of rubberV sheets or cushions for absorption of mechanical stresses such as shock and vibration. V Except sulfurated rubber 2. Soldering Soldering of the lead terminals shall be done at a position of 2.5 mm or more apart from bottom plain of the devices. 3. Bending force to the Terminals Abnormal bending force shall not be applied to the terminals of the Sensors, otherwise holding parts of the terminals may be easily broken, resulting in failures and damages of the devices. 4. Directivity Please be cafeful enough in deciding facing position of the sensor because of directivity. 3. Storage Notes 1. Environmental Conditions The Ultrasonic Sensors shall not be operated and/or stored under following environmental conditions; a) To be exposed directly to water or salt water. b) Under conditions of dew formation or frost. c) Under conditions of corrosive atomosphere such as hydrogen sulfide, sulfurous acid, chlorine and ammonia. 2. Long Term Storage The Ultrasonic Sensors shall not be stored under severe conditions of high temperature and high humidity. Store them indoors under 40 ¡C max. and 75 %RH max. Use them within one year and check the solderbility before use. |
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Similar Description - EFRTSB40K5 |
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