Betely’s TCG series of thermal gels includes both two-component and one-component systems, with thermal conductivity ranging from 2.3 W/m·K to 12.5 W/m·K. The products are designed primarily for high-reliability applications such as photovoltaic inverters, optical modules, and electronic control systems for new energy vehicles.
Two-Component Thermal Gel TCG-80XX Series
Suitable for photovoltaic inverter IGBT modules, power devices in energy storage systems, new energy vehicle battery packs, and electronic control systems.
Model | Thermal
Conductivity | Color After
Mixing | Extrusion
Rate | Hardness
(Shore 00) | Working
Time |
TCG-8023 | 2.3 W/m·K | Gray | 65 g/min | 52 | 45 min |
TCG-8040 | 4.4 W/m·K | Blue | 65 g/min | 58 | 3 h |
TCG-8060 | 6.2 W/m·K | Blue | 60 g/min | 60 | 3 h |
TCG-8125 | 12.5 W/m·K | Blue | 25 g/min | 60 | 3 h |
After curing, samples with a bond line thickness of 0.5–2 mm showed no cracking or sagging after vibration testing, thermal shock from −40°C to 125°C, exposure to 150°C, and damp-heat testing at 85°C/85% RH.
One-Component Thermal Gel TCG-7XXX Series
Suitable for precision thermal management between high-power optical chips and PCBs in 400G/800G high-speed optical modules and 5G fronthaul/backhaul equipment.
Model | Physical
Form | Color | Extrusion
Rate | Hardness
(Shore 00) | Room-Temperature
Application Window |
TCG-7065 | Paste-like | Gray | 90 g/min | 60 | 14 days |
TCG-7012 | Paste-like | Blue | — | 75 | 7 days |
Technical Advantages:
1. Oil bleed control: Under aging conditions of 125°C for 72 hours, the oil bleed rate of TCG-7065 measured four hours after application was only 8.33%, significantly lower than the 16.4% recorded for the competing product. This effectively reduces the risk of contaminating nearby components.
2. High-temperature hardness stability: During long-term aging at 150°C, the hardness of TCG-7065 (Shore 00) remained within a stable range of 65–75, with no tendency to soften or harden.
3. Application window: The one-component system maintains an application window of 7–14 days at room temperature, allowing greater flexibility in production scheduling.
Applications
In photovoltaic inverters, the TCG-80XX series fills microscopic air gaps between IGBT modules and heat sinks, helping ensure the long-term reliable operation of power devices. In optical modules, the TCG-7XXX series supports an ultra-thin bond line thickness of 0.2 mm, meeting the stringent space-efficiency requirements of high-density packaging. These products are also suitable for thermal management in new energy vehicle battery packs and IGBT electronic control systems.
The value of thermal gel lies in its ability to “fill”—filling microscopic air gaps between heat sources and heat sinks while also accommodating tolerances and vibration that conventional rigid thermal interface materials cannot absorb. Two-component systems deliver high reliability under the demanding operating conditions of new energy applications, while one-component systems combine ease of use with an ultra-low oil bleed rate to meet the needs of precision electronics manufacturing. Together, the two product lines cover a broad range of applications, from photovoltaic power stations to high-speed optical modules, providing flexible technical options for thermal designs across different industries.
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