Datasheet

Drawing No. P. 4/6
Reference Only
MURATA MANUFACTURING Co., LTD.
8. Caution
8-1 Limitation of Applications
Please don’t use for the applications listed below which require especially high reliability for the pr
evention of defects which might directly cause damage to the third party's life, body or property.
1) Aircraft equipment
2) Aerospace equipment
3) Undersea equipment
4) Power plant control equipment
5) Medical equipment
6) Transportation equipment (trains, ships, etc.)
7) Traffic signal equipment
8) Disaster prevention / crime prevention equipment
9) Data-processing equipment
10) Application of similar complexity and/or reliability requirement to the applications
listed in the above
8-2 Fail-safe
Be sure to provide an appropriate fail-safe function on your product to prevent a second damage t
hat may be caused by the abnormal function or the failure of our product.
9. Caution in use
9-1. Notice in design and usage
1) The transducer may generate surge voltage by mechanical or thermal shock. Care should
be taken to protect from it in designing your application circuit.
2) Please do not apply an excessive stress to the transducer because the piezo electric
element of the transducer might be damaged or inner cable might be disconnected.
3) The piezo electric element of the transducer may be damaged by force pressure from
back of the transducer.
4) Please do not apply D.C.voltage to the transducer to avoid failure. Electrode of piezo
electric element might be shorted out with electronic migration.
5) Please do not use the transducer in water.
6) Please hold the transducer with soft material such as rubber. The direct holding with hard
material will be cause of vibration leakage from, or into the transducer. It will be
influenced to decay time and short distance detection.
7) Please avoid humid penetration at the rear of the transducer in order to avoid short circuit.
Please use the transducer with waterproof design.
8) Please do not exceed 95 deg C / 120min in the assembly process and painting process to
avoid malfunction.
9) The transducer is designed for dual use purpose. Please do not use the transducer only
as receiver.
10) Care should be taken when select the material to hold, or cover backside of transducer. If
it contains sulfur or sulfide, electrode on piezo-electric element may corroded and
because of malfunction.
9-2. Notice in storage
1) The products should not be used or stored in a corrosive atmosphere, especially where
chloride gas, sulfide gas, acid, alkali or the like are present. Store the products in the
room where is normal temperature and humidity, and avoid the sunlight, sudden changes
in temperature and humidity. It may cause of failure or malfunction in such conditions.
2) Store the products where the temperature and relative humidity do not exceed -10 to 40
deg C, and 30 to 80%RH.Please Use the products within 6 months after receiving.
9-3. Notice in soldering and mounting