BeStar FT-39T-2.5B1 - Manual (Page 2)

BESTAR ELECTRONICS INDUSTRY CO.,LTD
No. Item Specification
1. Resonant Frequency 2.4~2.6K Hz@10mV Oscillation Level
see page3&3.1
2. Resonant Impedance 500ohm max @10mV Oscillation Level
3. Static Capacitance 30± 30%nF at 120Hz,see page3&3.2
Static Feedback Capacitance 4± 30%nF at 120Hz,see page3&3.2
4. Insulation Resistance Min.200M ohm @50V see page3&3.3
5. Operating Voltage 3 - 50 Vp-p(silver to metal disc excluding feedback)
6. Feedback electrode output voltage
and electrode input voltage ratio ≥2.5 see page 4 and test set up FIG1
7. "Pull off"force between silver
and ceramic layer (horizontally) 20N min see page 4 &5.2 a and test set up FIG2
8. "Pull off" force between silver
and ceramic layer (vertically) 2.5N min see page 4 &5.2 b and test set up FIG3
9. Operating Temperature -30...+85°C
10. Storage Temperature -40...+85°C
11. Metallic supporter Brass
T
h
is
p
ri
n
t
a
n
d
i
n
fo
rm
a
tio
n
t
he
re
i
n
a
re
p
ro
p
ri
e
ta
ry
t
o
B
e
s
ta
r
E
le
c
tr
o
n
ics
I
ndu
s
tr
y
C
o
.,
L
td.
a
nd
s
h
a
ll
no
t
b
e
u
s
ed
i
n
w
h
o
le
o
r
in
pa
rt
w
ith
ou
t
it
s
w
ri
tt
en
c
on
tent
6
Rev. Date Drawn
5
Note
J 09/08/31 汤浩君
I 09/05/11 汤浩君
H 09/01/17 汤浩君
A
B
C
D
E
F
G
FT-39T-2.5B1
1.Electrical characteristics
H
6 5
Piezo Ceramic Element
Approved by: 李红元
DRG NO: BS/TEY01.117J
3
www.be-star.com [email protected]
4 2 1
Page:02 of 08
FT-39T-2.5B1
09/08/31
汤浩君
赵 峥
Date:
Checked by:
Drawn by:
A
B
C
D
E
F
G
H
3 4 2
博 士 達
1