BeStar FT-27T-4.3A1 - Manual (Page 3)

郭 敏
姜文金
杨红烨
杨红烨
06/08/24
06/08/24
FT-27T-4.3A1
Fig.3.2 Direction of Lead Wire
Lead Wire
3.Characteristics:
Lead Wire
Fig.3.1 Direction of Lead Wire
90
°
3.2 Lead pull off test
a) Wire to be soldered on ceramic at the edge. It should withstand minimum 20N force applied in 180° .The
wire should not come out before this .The ceramic can be either glued on a surface of can be held in
hand.(Fig.3.2)
b) Wire to be soldered on ceramic at the edage&should be pulled up at 90° The element should be hold on
bottom and wire should be pulled up .It should withstand at least for 2.5N force(Fig.3.1)
3.1 Solderability
280 10 CTemperaure of Merited Solder,2 0.5sec Duration of Dipping .
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DRG NO: BS/TEY01.116B
A
Rev.
B
BESTAR ELECTRONICS INDUSTRY CO.,LTD
5 6
www.be-star.com [email protected]
4 3
Drawn Date Note
Drawn by:
Approved by:
Checked by:
Date:
Page:2 of 4
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Piezo Ceramic Element
FT-27T-4.3A1
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1 5 6 4 3 2
4.Measuring Method
4.1.Resonant Frequency/ Resonant Impedance:
Piezoelectric disc shall be clamped at a node or edge point ,figure to be free from any mechanical
stresses,and measure its resonant frequency and resonant impedance by using vector impedance analyzer
or equivalent.
Input frequency shall be swept within 1 to 5 kHz, where the resonant frequency is defined and the frequency
where the impedance shows minimum value, this impedance shall be the resonant impedance.
4.2.Capacitance:
A electrostatic capacity capacitance shall be measured at 120Hz by using LCR meter, such as DF2812A
LCR number bridge or equivalent. The part shall be clamped in the same way as the measurement of
resonant frequency / resonant impedance mentioned in section 4.1.
4.3.Insulation Resistance:
An insulation resistance shall be measured by using an insulation resistance meter,suach as DF2863
insulation resistance meter.
4.4.Measureing Condition:
Parts shall be measured under a condition(Temperature:+5 C to +35 C,Humidity:45 to 85% R.H.)
unless the standard condition(Temperature:+25 3 C,Humidity:60 10%R.H.)is redulated to
measure.