BeStar FT-39T-2.5B1 - Manual (Page 8)

I The thickness of piezo the thickness of piezo 09/05/11 汤浩君 李红元
disc and piezo is 0.39 disc and piezo is 0.40
and 0.70. and 0.68.
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J the tolerance of total the tolerance of total 09/08/31 汤浩君 李红元
thickness and sheet thickness and sheet
metal's thickness is metal's thickness is
0.005 and 0.01 0.01 and 0.1
DRG NO: BS/TEY01.117J
李红元
Rev. Drawn Date Note Approved by:
BESTAR ELECTRONICS INDUSTRY CO.,LTD
6 5
www.be-star.com [email protected]
4 3
J 09/08/31 汤浩君
I 09/05/11 汤浩君
H 09/01/17 汤浩君
A
B
Date:
Drawn by:
Checked by:
09/08/31
汤浩君
赵 峥
C
D
Page:08 of 08
2 1
Piezo Ceramic Element
FT-39T-2.5B1
A
B
C
D
FT-39T-2.5B1
Frequency:2.35~2.55KHz
Resonant Impedance:500max
The thickness of sheet metal:0.39
The thickness of ceramic:0.26
07/01/13
Frequency:2.35~2.5KHz
Resonant Impedance:300max
The thickness of sheet metal:0.40
The thickness of ceramic:0.2 C
It is not the sign of
week and year on
the ceramic.
E
H Printing the sign of
week and year on
the ceramic.
The thickness of piezo disc:0.65 E
G
F
F
D
Frequency:2.35~2.55KHz
Without concentric
circles tolerance
Printing the sign of
week and year on
the ceramic.
Printing the sign of
year,month and day
of the production on
the plate.
09/01/17 汤浩君
The thickness of piezo disc:0.70
Frequency:2.4~2.6KHz
Adding concentric
circles tolerance
Ø0.2 A
姜文金
07/01/29
09/01/08
07/09/13
杨红烨
汤浩君
07/01/15
姜文金
8. History change record
Change Items
A
B
G
version
No.
Frequency:2.4~2.5KHz
Before
H
Frequency:2.35~2.5KHz
After
姜文金 06/11/18
06/12/04
姜文金
姜文金
Date Drawn
6 5 4 3
李红元
E
程久生
张秀琴
李红元
程久生
F
程久生
程久生
程久生
Approved
G
H
2 1
博 士 達