3V Electromagnetic 5*5*2MM Patch Passive Electronic Alarm Buzzer

3V Electromagnetic Passive Patch Buzzer 5 * 5 * 2MM Patch Passive Electronic Alarm Buzzer

1. SMD PIEZO TOP SOUNDS BUZZER Description

The buzzer is an electronic sounder with an integrated structure. It is powered by DC voltage and is widely used as a sounding device in electronic products such as computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers and other electronic products . The buzzer is mainly divided into two types of piezoelectric buzzer and electromagnetic buzzer. The buzzer is represented by the letter "H" or "HA" in the circuit (the old standard is "FM", "ZZG", "LB", "JD", etc.).
1. Test conditions
Product test conditions: temperature: 5 ～ 35 ℃, humidity: 45% ～ 85% R.H., Air pressure: 860 ～ 1060hPa.
Standard test conditions: temperature: 25 ± 3 ℃, humidity: 60 ± 10% R.H. Air pressure: 860 ～ 1060hPa

2. SMD PIEZO TOP SOUNDS BUZZER Dimensions

Test circuit Test device

The resonant frequency is a square wave with a 50% duty cycle, and the signal voltage must be sufficient to allow the transistor
to saturate.
 

Frequency response curve

In a square wave with a 50% duty cycle at 3Vo-p, the test distance is 10cm

3.SMD PIEZO TOP SOUNDS BUZZER Advantage