Thermal Gel Features And Applications

Characteristics of thermal gel

1. Performance characteristics

Compared with thermal pads, thermally conductive gel are softer and have a better surface affinity. They can be compressed to a very low thickness, which significantly improves the heat transfer efficiency. The lower can be compressed to 0.08mm. At 0.08 ° C · in2 / W-0.3 ° C · in2 / W, some properties of silicone grease can be reached.

In addition, the thermal gel has almost no hardness and will not cause internal stress on the device after use.

Thermal gel is easier to handle than thermal grease. The general use of silicone grease is screen printing or steel plate printing, or direct brush coating, which is very unfriendly to the user and the environment. Due to its thixotropic material, the thickness range can be 0.08-2.0mm.

The thermally conductive gel is arbitrarily formed into the desired shape, which can ensure good contact for uneven PCB boards and irregular devices (such as batteries, component corners, etc.).

The thermally conductive gel has a certain degree of adhesion, and there is no problem of oil out and drying, and it has certain advantages in reliability.

2. Continuous operation advantages

The thermal gel can be directly weighed and used. The commonly used continuous method is a dispenser, which can achieve fixed-point quantitative control, save labor and improve production efficiency.

Applications of thermal gels

Thermal gel are widely used in the fields of LED chips, communication equipment, mobile phone CPUs, memory modules, IGBTs and other power modules, and power semiconductors.

3.Applications of thermal gel

The application is the application in the driving power of LED bulbs. In the export of LED lights, in order to obtain UL certification, manufacturers mostly use two-component potting glue for potting. Lamps exported to the United States require a 50,000-hour warranty. At present, the quality of LED lamp beads is not a problem. The main fault is the power supply. The power supply after potting with potting glue cannot be removed, and it can only be installed The lamp is discarded and replaced. If a thermally conductive gel is used to partially fill the power supply, heat can be efficiently exported. If there is a problem with the power supply, the power supply can be easily replaced, which saves costs for the enterprise. Of course for lamps that require waterproofing. Because the heat-conducting gel cannot fill all the gaps and gaps like potting glue, it cannot be waterproof and moisture-proof.