A. SCOPE This specification applies magnetic buzzer, FMB12A12
B. SPECIFICATION
No.
Item
Unit
Specification
Condition
1
Oscillation Frequency
KHz
2.3 ± 0.3
2
Operating Voltage
VDC
8~ 16
3
Rated Voltage
VDC
12
4
Current Consumption
mA
MAX. 30
at Rated Voltage
5
Sound Pressure Level
dB
MIN. 87
at 10cm at Rated Voltage
6
Response time
mS
Max 50mS
Lowest operation voltage
7
Operating Temperature
℃
-20 ~ +70
8
Storage Temperature
℃
-30 ~ +80
9
Dimension
mm
Φ12 x H9.5
See appearance drawing
10
Weight (MAX)
gram
2.0
11
Housing Material
PPO( Black )
12
Leading Pin
Tin Plated Brass(Sn)
See appearance drawing
13
Environmental Protection Regulation
RoHS
C. APPEARANCE DRAWING
Tol : ± 0.5 Unit: mm
D.TESTING METHOD Standard Measurement conditions Temperature:25±2℃ Humidity:45-65%
Acoustic Characteristics: The oscillation frequency, current consumption and sound pressure are measured by the measuring instruments shown below
In the measuring test, buzzer is placed as follows:
E. VOLTAGE / CURRENT / SOUND PRESSURE CHARACTERISTICS
F. RELIABILITY TEST
NO.
ITEM
TEST CONDITION AND REQUIREMENT
1
High Temperature Test (Storage)
After being placed in a chamber with 802℃ for 96 hours and then being placed in normal condition for 2 hours. Allowable variation of SPL after test: 10dB.
2
Low Temperature Test (Storage)
After being Placed in a chamber with -302℃ for 96 hours and then being placed in normal condition for 2 hours. Allowable variation of SPL after test: 10dB.
3
Humidity Test
After being Placed in a chamber with 90-95% R.H. at 402℃ for 96 hours and then being placed in normal condition for 2 hours. Allowable variation of SPL after test: 10dB.
4
Temperature Cycle Test
The part shall be subjected to 5 cycles. One cycle shall be consist of:
Allowable variation of SPL after test: 10dB.
5
Drop Test
Drop on a hard wood board of 4cm thick, any directions ,6 times, at the height of 75cm . Allowable variation of SPL after test: 10dB.
6
Vibration Test
After being applied vibration of amplitude of 1.5mm with 10 to 55 Hz band of vibration frequency to each of 3 perpendicular directions for 2 hours . Allowable variation of SPL after test: 10dB.
7
Solderability Test
Lead terminals are immersed in rosin for 5 seconds and then immersed in solder bath of +3005℃ for 31 seconds . 90% min. lead terminals shall be wet with solder (Except the edge of terminals).
8
Terminal Strength Pulling Test
The force of 9.8N(1.0kg) is applied to each terminal in axial direction for 10 seconds. No visible damage and cutting off.
TEST CONDITION. Standard Test Condition : a) Temperature : +5 ~ +35℃ b) Humidity : 45-85% c) Pressure : 860-1060mbar Judgment Test Condition : a) Temperature : +25 ± 2℃ b) Humidity : 60-70% c) Pressure : 860-1060mbar
