Of all the “hot” electronics markets, none is hotter thanthe market for devices designed to interact with the Internet of Things (IoT). Currently, more than seven billion IoT devices are in use worldwide, and the number of active IoT devices is expected to grow to 22 billion by 2025.
Virtually all of those devices need to be powered or recharged in some way, often with USB cables in the case of portable or wearable objects. Consumers’ desire to recharge their wireless IoT devices quickly and the higher levels of power required to do that raise the risk of thermal damage for both the charging cable and the device itself. As these devices get smaller and more transportable, their ports are increasingly exposed to debris in pockets, bags, and the atmosphere itself. These contaminants, when trapped between the device’s or connector’s power pins, can produce faults that lead to over-heating, especially at the higher power levels being used to charge the latest devices.
Source : Power Systems Design