The electronic part VY2101K29Y5SS63V7 manufactured by Vishay is a safety capacitor. It is 100pF and has a voltage rating of X440 Y300VAC 10%. It has a Y5S construction and a safety rating of 2KV. It also has a temperature range of -55°C to +125°C. It is designed for use in telecommunications equipment, fire alarms, and other critical safety applications.