This specification applies magnetic buzzer, FMB09A24
|1||Oscillation Frequency||KHz||2.7 ± 0.3|
|2||Operating Voltage||VDC||18 ~ 28|
|4||Current Consumption||mA||MAX. 30||at Rated Voltage|
|5||Sound Pressure Level||dB||MIN. 80||at 10cm at Rated Voltage|
|7||Operating Temperature||℃||-20 ~ +70|
|8||Storage Temperature||℃||-30 ~ +80|
|9||Dimension||mm||Φ9.0 x H5.5||See appearance drawing|
|11||Housing Material||PPO( Black )|
|12||Leading Pin||Tin Plated Brass(Sn)||See appearance drawing|
C. APPEARANCE DRAWING
Tol : ± 0.5 Unit: mm
Standard Measurement conditions
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
TEST CONDITION AND REQUIREMENT
After being placed in a chamber with 802℃ for 96 hours and then being placed in normal condition for 2 hours.
After being Placed in a chamber with -302℃ for 96 hours and then being placed in normal condition for 2 hours.
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.
The part shall be subjected to 5 cycles. One cycle shall be consist of:
Drop on a hard wood board of 4cm thick, any directions ,6 times, at the height of 75cm .
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 .
Lead terminals are immersed in rosin for 5 seconds and then immersed in solder bath of +3005℃ for 31 seconds .
The force of 9.8N(1.0kg) is applied to each terminal in axial direction for 10 seconds.
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
G. PACKING STANDARD