Electronics
Silicon trench capacitors save space in wearables
![Silicon trench capacitors save space in wearables Silicon trench capacitors save space in wearables](https://i0.wp.com/static.electronicsweekly.com/wp-content/uploads/2023/11/02153825/Rohm-silicon-trench-capacitor.jpg?resize=780%2C470&ssl=1)
“The mounting area is reduced by approximately 55% over general 0201 [0603 metric] products to just 0.08mm2.” according to the company. “Moreover, a built-in transient voltage suppressor protection element ensures high ESD resistance.”
They are rated at 3.6V, with the internal bi-directional TVS breaking down between 8.2 and 9.2V.
Trenching is used to increase capacitance per unit area, and, being made from silicon, the devices step outside the usual three-character ceramic capacitor temperature coefficient labelling system. Operation is over -55 to +150°C with a ±250ppm/°C coefficient. Capacitance tolerance is ±15%.