Glass transition temperature (Tg) is the core thermal performance index of printed circuit board (PCB) substrates. High Tg PCBs for communication equipment specifically refer to specialized PCBs with a Tg value ≥ 170℃, designed for the harsh working conditions in the communication field. They are core supporting components for devices such as 5G base stations and optical modules, solving the pain points of traditional PCBs that are prone to deformation and signal distortion under high temperature and high frequency conditions.
Core Advantages
Combining the core requirements of communication equipment for high temperature, high frequency, and long-term operation, high Tg PCBs have formed differentiated advantages in performance, fully meeting the strict industry standards. The specific advantages are as follows:
- High Temperature Resistance: Tg value ≥ 170℃ (180℃-220℃ for high-end models), capable of withstanding the peak temperature of 245℃-260℃ in lead-free soldering, avoiding substrate softening and board bursting, and reducing equipment failures.
- Dimensional Stability: Controllable Z-axis thermal expansion coefficient, small thermal deformation, avoiding interlayer misalignment of multi-layer boards, and adapting to high-density wiring requirements.
- Electrical Stability: Adopting modified epoxy resin substrate, with a dielectric constant as low as 3.5±0.05 and a dielectric loss as low as 0.002, ensuring distortion-free transmission of 5G high-speed signals.
- High Reliability: Resistance to delamination and corrosion, capable of 24/7 uninterrupted operation, maintaining good performance under alternating high and low temperatures and high humidity environments, and extending equipment service life.
- Good Process Compatibility: Compatible with multi-layer board and HDI manufacturing, supporting lead-free soldering and reflow soldering, with strong customization capabilities and high batch yield.
These core advantages together establish the core position of high Tg PCBs in communication equipment, effectively solving the performance shortcomings of traditional PCBs and providing solid guarantee for stable equipment operation.
Main Features
| Feature Category | Specific Description |
| Strong Customization | Parameters such as Tg value, board thickness and number of layers can be customized on demand to adapt to the core circuit needs of various communication equipment. |
| High Frequency & Low Loss | Optimized substrate formula reduces signal attenuation, adapting to 5G millimeter wave and high-speed data transmission scenarios. |
| Environmental Compliance | Halogen-free and RoHS compliant, no harmful substances in production, and can be directly exported overseas. |
| Excellent Environmental Resistance | Passed strict tests, capable of long-term stable operation in a temperature difference environment of -40℃~125℃, adapting to outdoor and industrial communication scenarios. |
Frequently Asked Questions
Q1: What is the core difference between high Tg PCBs and ordinary PCBs?
A1: The core difference is the glass transition temperature. The Tg value of ordinary PCBs is 130℃-150℃, which cannot withstand high temperature conditions and is prone to deformation; high Tg PCBs (≥170℃) are high temperature resistant, dimensionally stable, more reliable, and suitable for the high-frequency and long-term operation needs of communication equipment.
Q2: Which soldering processes of communication equipment are high Tg PCBs suitable for?
A2: Suitable for mainstream processes such as lead-free soldering and multiple reflow soldering, capable of withstanding the peak soldering temperature of 245℃-260℃, compatible with SMT surface mounting, and meeting high-density assembly needs.
Q3: What is the approximate service life of high Tg PCBs?
A3: It can operate stably for more than 10 years under normal working conditions, far exceeding ordinary PCBs, which can reduce equipment maintenance and replacement costs.
Q4: What parameters are needed to customize high Tg PCBs?
A4: It is necessary to provide specific Tg value, board thickness, number of layers, wiring density, surface treatment process, size specifications and equipment operating temperature range, and we will customize an adaptive solution.
Q5: Are high Tg PCBs environmentally compliant and exportable overseas?
A5: Fully compliant with halogen-free and RoHS environmental standards, all indicators meet the global environmental access requirements for communication equipment, and can be directly exported.
Application Scenarios
Based on excellent high temperature resistance, high stability and high reliability, high Tg PCBs are widely used in various scenarios in the communication field, covering the entire link application from core equipment to terminals. The specific scenarios are as follows:
- 5G Base Station Equipment: Suitable for base station antennas, radio frequency modules, etc., withstanding outdoor high and low temperatures and high-power heating of base stations, ensuring stable signal transmission.
- Optical Communication Equipment: Suitable for optical modules, optical switches, etc., low loss reduces signal attenuation, and high temperature resistance copes with high temperatures generated by dense internal components of equipment.
- Network Communication Equipment: Suitable for high-end routers, switches, etc., supporting high-density wiring and ensuring 24/7 stable operation of equipment.
- Outdoor Communication Equipment: Suitable for outdoor base stations, satellite communication equipment, etc., withstanding complex outdoor environments and ensuring uninterrupted communication links.
- High-end Communication Terminals: Suitable for enterprise-level routers, communication test equipment, etc., meeting high-precision and high-reliability requirements.
Whether in harsh outdoor environments or indoor high-precision equipment, high Tg PCBs can be accurately adapted, providing strong support for the long-term stable operation of various communication equipment.
We focus on the R&D, production and sales of high Tg PCBs, and can provide customized solutions with strict quality control. For consultation and customization needs, please contact us through the following methods:
WhatsApp: +86 13425156463
Email:sales@toplinecircuit.com
