microcontrollercovering
Microcontroller covering is a set of techniques used to apply protective coverings to microcontroller units (MCUs) or MCUs on printed circuit boards. The term covers conformal coatings, potting, and overmolding used to shield the device from moisture, dust, chemicals, vibration, and electromagnetic interference. It is common in harsh environments, such as automotive, industrial, and outdoor electronics.
Conformal coatings are thin protective layers applied over assembled boards. Types include acrylic, silicone, polyurethane, and
Potting and encapsulation involve pouring or injecting material to completely encase the MCU and nearby components
Overmolding deposits a molded polymer around a subassembly, combining protection with mechanical strength and sometimes EMI
Design considerations include thermal management, reworkability, inspection, adhesion, material compatibility, and regulatory compliance. The choice depends
Standards and testing: conformal coatings must meet IPC-CC-830A; environmental tests may include humidity, thermal cycling, and
See also: conformal coating, encapsulation, potting, overmolding, electronic packaging.