What are the advantages of COB technology compared to traditional packaging technology?
1. High packaging efficiency and cost saving
The COB packaging process is similar to the SMD production process, but the COB package has a much higher packaging efficiency in dispensing, separation, grading and packaging, and can save 5% of any material and material costs compared to conventional SMD.
2, low thermal resistance advantage
The system thermal resistance structure of the traditional SMD package is: chip-solid crystal glue-solder joint-solder paste-copper foil-insulation layer-aluminum material. The thermal resistance of the COB package system is: chip-solid glue-aluminum. The thermal resistance of COB package systems is much lower than that of traditional SMD packages, so the life of LED lamps in COB packages is greatly improved.
3, light quality advantage
Traditional SMD packages use a patch to attach multiple discrete devices to a PCB to form a light source component for LED applications. This practice has problems with spotlight, glare, and ghosting. Because the COB package is an integrated package, it is a surface light source with a large viewing angle and easy adjustment, reducing the loss of light refraction.
The traditional SMD package method is to attach a plurality of different devices to the PCB board to form an LED light source component. The light source made by such a packaging process generally has problems of electro-optical, ghosting and glare. The COB light source does not have the above problem. It belongs to a surface light source, has a large viewing angle and is easy to adjust the angle, and reduces the loss of light due to refraction.
4, application advantages
The COB light source is very easy to apply and can be directly applied to the luminaire without additional processes. The traditional SMD package light source needs to be patched first and then soldered to the PCB. It is not as convenient as COB in application.
Pre-record sound chip
Sound module,Recordable sound module:
Ningbo AST Industry Co.,Ltd has 17 Years Experiences to produce the Recordable sound module, sound module, sound chip, voice module, recordable sound chip,Musical module and other electronic modul. we can assure you of competive price,high quality,prompt delivery and technology supporting.
1. Sound Module Application:
Sound Module is one kind of electronic product which mainly applied for Greeting cards,Christmas cards, promotion gifts, kids books, newspapers, magazines or other products which have sounds.
2. Sound Module Classification:
We can produce different sound modules which have different functions:
A. Pre-record Sound Module ----The clients will provide their sound files to us as MP3 or Wav Format,Then we programme them into the Sound module,it will play the customized message.
The sound file can be from 1second to 480seconds
B. Recordable Module ---also called Self-recording sound chip,we can record our own messages and playback them. Of course,the message can be erased and re-recorded.
Recording time:6seconds,10seconds,20seconds,30seconds,60seconds,90seconds,120seconds,180seconds etc
C. Melody module --Which can play the Melody of the Happy Birthday,Merry Christmas,Slient Night and so on.
D. USB MP3 Module ---We Can download the songs,musics,sentences,voice,advertising language from PC directly. Which support SD Cards,TF Cards,U Disk and FM.LCD Display also can be made
E. Programmable Voice Module --Also can be called DIY Sound Chip,We provide the software and Programable Machine and the Clients can be programmed them at their office,factory or Home. Which is much suitable to small order quantity,but Prompt delivery order.
F. Waterproof Music Module --which usually are used by Children Cloths,Kids'Bib ,attract the children's attention or Sing the children's songs.
3. Sound Quality:Clearly and Loudly ( 16Khz Sampling Rate)
4. Activated way:
1) Pull String -- Pull the string to activate the sound.
2) Slide tongue,usually was used by greeting cards,open the cards,it will play the message automatically.
3) Push buttons--press the button to play the message/audio/music
4) Light sensor,usually was used by Gift box,newspaper. Open the Box or newspaper to play the message
5) vibration sensor,Move or shake it to play the customized audio
6) shadow sensor,if somebody walks front it,it will play the message.
7) Motion sensor,usually was used by Pop Display, advertising board and so on.when somebody walks front it,it will play the message.
8) PIR (Infrared sensor),usually was used by Pop Display, advertising board and so on.when somebody walks front it,it will play the message.
5. Long Lifespan
6. Speaker:21mm,27mm,29mm,36mm,40mm,57mm etc. Plastic or Metal
7. Battery:AA, AAA, AG13, AG10, AG3 and so on environmental
8. PCB available: customize size or our existed standard size
9. PCB:Customized Size (OEM or ODM) or our existed standard size
10. Certification:CE ,Rohs
11. Export to: USA, UK,Canada,Germany, Turkey,Russia,Poland,Switzerland,Netherland ,Frence Hungary ,Australia,New Zealand, Brazil, Columbia,Argentina,Thainland,Singapore , Malaysia and so on
Activation Sound Chip, Motion Sensor Sound Module, Pre-Record Sound Chip
AST Industry Co.,LTD , https://www.astsoundchip.com