The active piezo buzzer is an integrated electronic sounder that is powered by DC voltage and is widely used in electronic products such as computers, printers, copiers, alarms, electronic toys, automotive electronics, telephones, timers, etc. Sounding device. The buzzer is mainly divided into two types: piezo buzzer and magnetic buzzer.The piezoelectric buzzer is mainly composed of a multivibrator, a piezoelectric buzzer, an impedance matching device, a resonance box, an outer casing and the like. Some piezoelectric buzzer housings are also equipped with light-emitting diodes.
Sound pressure Level | 90dB Min/10cm |
Rated Voltage VDC | 12V |
Resonant Frequency | 3.5±0.5kHz |
Current at rated Voltage | 15.0mA Max. |
Operating Voltage | 3-20 Vdc |
Operation Temperature | -20°C – +70°C |
Storage Temperature | -30°C – +80°C |
Tone Nature | Single |
Weight | 4 |
House material | MPPO |
VALUE APPLYING RATED VOLTAGE (3200Hz 1/2 DUTY SQUARE WAVE)
VALUE APPLYING (3200Hz SINE WAVE MEASURING CURRENT 60μA)
(UNIT:MM) Tolerance: ±0.2mm
3.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:
4.FREQUENCY CURVE
5.RELIABILITY TEST
NO. | ITEM | TEST CONDITION AND REQUIREMENT |
1 | High Temperature Test (Storage) | After being placed in a chamber with 70 2ºC 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 -30 2ºC 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 40 2ºC for 96 hours and then being placed in normal condition for 2 hours. Allowable variation of SPL after test: +/-10dB. |
4 | Temperature Cycle Test | ![]() |
5 | Drop Test | Drop on a hard wood board of 4cm thick, any directions ,3 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 +300 5ºC for 3 1 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.
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
6.PACKING STANDARD
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