Keunggulan dan Aplikasi Kinerja PCB Tg Tinggi

Diposting pada 2020-07-14

Keunggulan Kinerja dan Aplikasi PCB Tg Tinggi

As we all know, when the temperature rises to a certain area, the basic material (polymer or glass) is changing from a glass state, a solid state, and a rigid state to a rubber state. Therefore, the temperature at this time is called the glass transition temperature (Tg). That is, Tg is the mechanical property that specifies the glass transition temperature, that is, the maximum temperature at which the glass remains rigid. In other words, ordinary PCB substrates will not only soften, deform, melt and other phenomena at high temperatures. And the mechanical and electrical performance will also drop sharply, which will affect the service life of the product.

Needless to say, the normal PCB FR4-Tg is 130-140 degrees, the medium Tg is greater than 150-160 degrees, and the high Tg is greater than 170 degrees. Compared with standard FR4, high FR4-Tg has better mechanical and chemical heat and moisture resistance. The higher the Tg value, the better the heat resistance of the material. Therefore, especially in the lead-free process, the Tg is getting higher and higher.

High Tg PCB performance

With the rapid development of the electronics industry, high Tg materials are widely used in computers, communications equipment, precision instruments and instrumentation. In order to achieve high functionality and high multilayer development, PCB substrate materials require higher heat resistance as a prerequisite. Moreover, due to the emergence and development of high-density mounting technologies represented by SMT and CMT, in the case of thinning, small aperture, and fine wiring, the high heat resistance of the substrate and the substrate are increasingly inseparable.

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Therefore, the difference between the general FR-4 and the high FR4-Tg is that mechanical strength, adhesion, water absorption, dimensional stability, thermal decomposition in the thermal state (especially after water absorption) in the thermal state are different conditions (such as thermal expansion ) The difference is obvious, high TgPCB is better than ordinary PCB substrate material. Therefore, in recent years, the demand for high Tg PCB is very large, but the price is higher than the ordinary PCB.

More importantly, high Tg materials are also very popular in the LED lighting industry. Because the LED cap dissipation rate is higher than ordinary electronic components, but the same structure of the FR-4 board is much cheaper than metal core PCBs such as aluminum core PCBs.

Advantages of high Tg PCB

  • Stabilitas yang lebih tinggi: Jika Anda meningkatkan Tg dari substrat PCB, secara otomatis akan meningkatkan ketahanan panas, ketahanan kimia, ketahanan kelembaban, dan stabilitas perangkat.
  • Tahan desain dengan kepadatan daya tinggi: Jika perangkat memiliki kepadatan daya tinggi dan generasi panas yang relatif tinggi. Maka PCB Tg tinggi akan menjadi solusi yang baik untuk manajemen termal.
  • Saat mengurangi pembangkitan panas papan biasa: PCB yang lebih besar dapat digunakan untuk mengubah desain dan persyaratan daya perangkat, dan PCB Tg tinggi juga dapat digunakan.
  • Ideal untuk multi-layer dan HDI PCB: Karena HDI  lebih kompak dan memiliki sirkuit yang padat, mereka akan menghasilkan tingkat pembuangan panas yang tinggi. Oleh karena itu, PCB Tg tinggi biasanya digunakan dalam multilayer dan PCB HDI untuk memastikan keandalan pembuatan PCB.

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Kapan PCB Tg tinggi diperlukan?

If your printed circuit board cannot withstand a thermal load not lower than Tg25 degrees Celsius, your application will require high Tg PCB. In addition, if your product operates in the temperature range of 130 degrees Celsius or higher, it can also ensure the safety of using high Tg PCBs. Needless to say, the main reason for high Tg PCB is the shift to RoHS PCB. As a result, more and more PCB industries are turning to high-Tg materials because lead-free solder to flow requires higher temperatures.

High Tg PCB applications

Jika kepadatan daya pada produk elektronik lebih tinggi, dan pembangkitan panas akan mengganggu heat sink atau bagian lain dari produk, maka PCB Tg tinggi adalah solusi terbaik. Selain itu, dengan popularitas PCB Tg yang tinggi dalam beberapa tahun terakhir, Anda akan menemukan bahwa Tg PCB digunakan dalam industri elektronik yang dapat beroperasi pada suhu yang lebih tinggi. Oleh karena itu, kami menyediakan ketahanan panas tinggi dan PCB Tg tinggi untuk memenuhi kebutuhan pelanggan di berbagai industri. PCB ini dapat memenuhi spesifikasi pelanggan dalam waktu pengiriman yang singkat. Oleh karena itu, ada beberapa contoh aplikasi sebagai berikut: gateway, identifikasi frekuensi radio, inverter, papan antena, penguat nirkabel, layanan pembuatan kontrak, PLC berbiaya rendah, pengembangan sistem tertanam, sistem komputer tertanam, catu daya AC.

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