MODEL:
GT-0903A
PRODUCT:
Electromagnetic Buzzer
EDITION:
A/2016
THIS SPECIFICATION APPLIES TO THE ELECTROMAGNETIC BUZZER
SPECIFICATION
Test condition: TEMP=+25±2 oC Related humidity=65±5% Air pressure:860-1060mbar
item
rated voltage
operating volt
mean current
coil resistance
sound output
rated frequency
operating temp
storage temp
dimension
weight
material
terminal
environmental
protection regulation
unit
Vo-p
Vo-p
mA
Ω
dBA
Hz
oC
oC
mm
gram
specification
3.0
2-4
Max.80
15±15%
85
2730
-20
~
+60
-30
~
+70
φ9.0×H4.5
0.6
PPO(Black)
Pin type (Plating Au)
RoHS
See attached drawing
See attached drawing
At 10cm(A-weight free air), at rated voltage
2730Hz, square wave, 1/2duty
condition
Vo-p
0V
At rated voltage 2730Hz, square wave, 1/2 duty
ENVIRONMENT TEST
item
high temp. test
low temp. test
thermal shock
test condition
After being placed in a chamber at +70oC for
96 hours.
After being placed in a chamber at -30oC for
96 hours.
The part will be subjected to 10 cycles.
One cycle shall consist of:
-30oC
30 min
evaluation standard
After the test the part will meet specifications
without any degradation in appearance and
performance except SPL after 4 hours at +25oC.
The SPL will be in ±10dBA compared with initial
one.
+70oC
30 min
60 min
temp./humidity cycle
The part will be subjected to 10 cycles.
One cycle shall be 24 hours and consist of:
+70oC
+25oC
a
12±0.5hrs
a,b: 90~98%RH
c: 80~98%RH
b
c
3hrs
24 hrs
3hrs
PAGE 1/5
MODEL:
GT-0903A
PRODUCT:
Electromagnetic Buzzer
EDITION:
A/2016
RELIABILITY TEST
item
operating life test
test conditions
ORDINARY TEMPERATURE
The part will be subjected to 96 hours of
continuous operation at room temperature.
HIGH TEMPERATURE
The part will be subjected to 72 hours of
continuous operation at +60oC with 3.0V,
2730Hz applied.
LOW TEMPERATURE
The part will be subjected to 72 hours of
continuous operation at -20oC with 3.0V,
2730Hz applied.
TEST CONDITION
Standard Test Condition : a)Temperature: +5~+35oC b)Humidity:45~85% c)Pressure: 860~1060mbar
evaluation standard
After the test the part will meet specifications
without any degradation in appearance and
performance except SPL, after 4 hours at +25oC.
The SPL would be in ±10dBA compared with
initial one.
MECHANICAL CHARACTERISTICS
item
solderability
test conditions
Lead terminal are immersed in rosin for 5
seconds and then immersed in solder bath of
+260±5oC for 3±0.5 seconds.
Lead terminal are immersed in soldering bath of
+260±5oC for 2±0.5 seconds.
Apply the terminal with 1KG strength for 10 ±1
seconds.
The part will be subjected to a vibration cycle of
10Hz to 55Hz to 10Hz in a period of 1 minute.
Total peak amplitude will be 1.52mm(9.3G). The
vibration test will consist of 2 hours per axis in
each three axes(X,Y,Z). Total 6 hours.
The part only will be dropped from a height of
75cm onto a 40mm thick wooden board 3 times
in 3 axes(X,Y,Z). Total of 9 times.
No damage and cutting off
After the test the part will meet specifications
without any damage in appearance and
performance except SPL.
The SPL would be in ±10dBA compared with
initial one.
evaluation standard
90% min. lead terminals will be wet with solder
No interference in operation.
soldering heat resistance
terminal mechanical
strength
vibration
drop test
RECOMMENDED WAVE SOLDERING TEMPERATURE CURVE
Recommendable wave soldering condition is as follows:
Note 1: It is requested that wave soldering should be executed after
heat of product goes down to normal temperature.
Note 2: Peak wave temperature of 235˚C -235˚C maximum of 10
seconds.
PAGE 2/5
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