Reference only P.13 /15
MURATA MANUFACTURING CO., LTD
12. Caution (Application, Fail-safe)
12-1.Application Limitations
This product, the PKGS type shock sensor, has been designed for hard-disk drive applications,
used in personal computers and consumer audio-visual equipments.
Please contact Murata before using this product in the applications listed below, which require
especially high reliability for the prevention of defects which might directly cause damage to the
third party's life, body or property, or when this product is intended for use in applications other
than those specified in this data sheet. We shall not be liable for any claims on the product in
case it is used in the listed applications below, without contacting us.
(1) Cellular phone (2) Automotive equipment other than the above mentioned
(3) Outside use equipment (4) Aircraft, Avionics equipment (5) Aerospace equipment
(6) Under sea equipment (7) Power plant control equipment (8) Medical equipment
(9) Transportation equipment (vehicles, trains, ships, etc.) (10) Industrial equipment
(11) Traffic signal equipment (12) Disaster prevention / crime prevention equipment
(13) Safety device / system (14) Military equipment (regardless of direct/indirect use)
(15) Applications of similar complexity and/or reliability requirements to the applications listed
in the above.
12-2.Fail-safe
Be sure to provide an appropriate fail-safe function on your product to prevent damage that may
be caused by the abnormal function or the failure of our product.
13. Caution (Handling)
1) This product may be degraded by electrostatic discharge. We would suggest countermeasures
against electrostatic discharge, before handling this product.
2) Please evaluate this product in your product; with it mounted to a Printed Circuit Board (PCB) or
similar. We recommend that this product not be repeatedly mounted on or removed from a PCB
by soldering, because of the possibility of degradation due to excessive heating to this product or
electrostatic discharge (in case electrostatic discharge is not guarded against).
14. Caution (Storage condition and usage environment)
1) Maximum storage period is for 6 months under the condition of 30°C and 70%RH before PCB
mounting. If this product is kept in an especially high humidity environment, the product may
degrade because of decreased insulation resistance value due to such conditions.
2) Please do not store and do not use this product in conditions that differ greatly from atmospheric
pressure, such as a vacuum space, a high mountain, water, and so on. A pressure cooker test is
not applicable for this product.
3) Please do not expose this product to dust, oil, corrosive gas, acid, or alkali. This product may be
degraded if exposed.
15. Caution (Design)
1) Please use a charge amplifier circuit. This specification is only valid for use with charge amplifiers.
For instance, if you use a voltage amplifier circuit that is used with this product, we shall not be
liable for any claims.
2) Please do not apply DC bias voltage to this product, because it causes degradation of insulation
resistance value. Please try to keep minimizing the input bias current at front-end of amplifier
circuit as well.
3) Please thoroughly evaluate this product for noise immunity. Noise, coming from the product (EMI)
and/or generated by signal lines on PCB or other mechanical device (like a spindle motor), may
result in the miss-operation or the non-operation of this product.
4) Please thoroughly evaluate this product in terms of mechanically accelerated transmission system,
because this product may detect unexpected acceleration that is transmitted through PCB and/or
through the frame of your product. Mechanical resonance on your product or individual vibration
frequency of installed components/devices may create mutual interference, and it may result in
incorrect measurement by the sensor.