Automatic production 8.5*8.5*3mm 2700HZ SMD Passive patch buzzer
Electronic lock dedicated buzzer 3v 5v
1. 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
|
Oscillation Frequency (Hz) | 2700 |
Operating Voltage (Vp-p) | 2.0 ~4.0 |
Rated Voltage (Vp-p) | 3.0 |
Current Consumption (mA/max.) | 90 at Rated Voltage |
Sound Pressure Level (dB/min.) | 86 at 10cm at Rated Voltage |
| 16 ± 2 |
Operating Temperature (℃) | -20 ~ +60 |
Storage Temperature (℃) | -30 ~ +80 |
Environmental protection rule | ROHS | | |
2.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
Reflow soldering conditions:
a.Reflow soldering curve
Note: (1) After the product passes through the reflow soldering
machine, all electrical properties should be kept within the
specifications.
(2) The operating temperature of reflow soldering must be within
the recommended range. If it exceeds the range, it may affect the
performance of the product.
Reliability test
After any of the following tests, the following standards must be
met. The appearance and electrical performance (except for sound
pressure) must not have any defects or attenuation, and the sound
pressure cannot be less than 10dB of the minimum sound pressure in
the specification.
6.1 Life test
Place the test piece at a temperature of 25 ± 10 ° C and input a
resonance frequency square wave with a rated voltage and a duty
ratio of 1/2 to test for 96 hours.
6.2 High temperature test
The test piece was stored at + 80 ° C for 96 hours, taken out and
placed at normal temperature for 3 hours, and then tested.
6.3 Low temperature test
The test piece is stored at a temperature of -30 ° C for 96 hours,
taken out and placed at normal temperature for 3 hours, and then
tested.
6.4 Humidity test
Put the test piece under the condition of temperature + 40 ± 3 ℃
and humidity 90% ～ 95% for 48 hours, then put it at room
temperature for 3 hours and then test.
6.5 Temperature shock test
Put the test piece under the following temperature change
conditions: 60 ℃ 1 hour → 25 ℃ 3 hours → -20 ℃ 1 hour → 25 ℃ 3
hours (1 cycle), after completing a cycle experiment, continue
after 1 hour One experiment, the total number of test cycles: 10
cycles.
6.6 Floor test
After standard packaging of the test piece (3 sides and 6 sides of
the box), it falls from a height of 75 cm onto a thick wooden board
or a 5 cm thick hard board
6.7 Mechanical vibration test
Test again after the experiment under the following conditions:
vibration speed: 1000 times / min; amplitude: 1.5 mm; time: 1 hour
to change the direction of one degree of freedom for a total of 3
degrees of freedom.
note:
It is necessary to avoid irrelevant materials from entering the
product, such as magnetic materials, water-soluble materials,
corrosive gases, etc. Because these irrelevant materials will
affect the electrical performance of the product.
3.SMD PIEZO TOP SOUNDS BUZZER Related Products
4.SMD PIEZO TOP SOUNDS BUZZER Application
| 1. Alarms | 2. Satellite receivers | 3. Microwave ovens | 4. Computers |
| 5. Calculators | 6. Digital cameras | 7. Electronic dictionaries | 8. Ultrasonic planimeters |
| 9. Medical devices | 10. Micro-displacement positioner | 11. High voltage generator | 12. Facsimile machines |
| 13. Telephones | 14. Toys | 15. Clocks | 16. Smart lock system |
| 17. Car parking system | 18. Others
|
5. SMD PIEZO TOP SOUNDS BUZZER Package
6. SMD PIEZO TOP SOUNDS BUZZER F&A
| 1. Q: When can we get the reply? |
| Any inquiries will be replied within 24 hours. |
| 2. Q: Can i have samples? |
| A: Yes. Sample is surely ok. We can even send you free sample and
you should only pay for the freight fee. |
| 3. Q: What about minimum order quantity? |
| A: We have no limit for MOQ, so you can even buy only 1 piece.
Welcome to buy sample to test first. |
| 4. Q: What about delivery time? |
| A: We will send sample to you within 3 days. |
| Production for big quantity needs 20 to 25 days. And it also
depends on product and quantity. |
| 5. Q: What about terms of payment? |
| A: Payment terms: T/T, west Union, Paypal and L/C etc. |
| 6. Q: How you will send the goods to us? |
| A: We will send the goods to you by Air (DHL, Fedex, UPS, TNT) and
Sea shipping etc. |
| 7. Q: Are you trading company or manufacturer ? |
| A: We are in China buzzer manufactory |
| 8. Q: Do you support OEM and ODM services? |
| A: Yes, surely support. we can customize products according to the
drawing. |
| 9. Q: Can you provide driven circuit? |
| A: Yes, of course sure. |
| 10. Q: Can you solve technical problems for us? |
| A: Yes, Our Technical team will try our best to support you. |
6. Contact Us
