Reference only P.4/15
MURATA MANUFACTURING CO., LTD
7. Physical Characteristics
Test Item
Condition of Test
Performance Requirements
7-1 Mechanical
Shock
The transducer shall be measured after being
applied three impacts in plus and minus
directions of three mutually perpendicular
planes.
The shock is specified as 29400m/s
2
(3000G)
half sine pulse of 0.3 ms duration.
No visible damage and the
measured values shall meet
Table 2.
7-2 Vibration The transducer shall be measured after being
applied vibration of amplitude of 1.5 mm with 10
to 55 Hz band of vibration frequency to each of 3
perpendicular directions for 2 hours.
( 5 minutes × 24 cycles )
7-3 Bend Strength
PCB
The transducer is soldered onto the center of
PCB (1.6 mm thickness) which is laid on the 2
small supporters spaced 90 mm.
PCB is deflected to 1 mm below from horizontal
level by the pressing force with 20 × 10. R10
stick. The force is supplied for 1 second, 5 times
repeatably.
No visible damage and the
measured values shall meet
Table 3.
7-4 Resistance to
Reflow
Soldering
The transducer shall be mounted on PCB, then
measured after being applied following reflow
conditions.
<Test flow>
Pre-heating :
60 to 150 sec. at 150 to 180 °C
Heating :
Within 60 sec. at 200 °C (or more)
Within 30 sec. at 250 °C (or more)
Peak Temperature:
Within 10 sec. at 260 °C
Shock sensor should be tested 2 times of this
test flow.
PCB size : 115 × 80 × 0.8 mm
fter being placed at ambient conditions for 8
hours, the transducer shall be measured.
No visible damage and the
measured values shall meet
Table 2.
7-5 Solderability End terminals are immersed in rosin for
5 seconds then immersed in soldering bath of
+230±5°C for 3±0.5 seconds.
75% min. end terminals shall
be wet with solder.
7-6 Washability See Table 1. No visible damage and the
measured values shall meet
Table 2.
Part
Stick
φ
5 Supporter
1 off-Cente
Unit: mm
Load
Deflection
