This TCP 23 watt Dimmable SpringLamp® is designed for general use around the home. This bulb is a suitable replacement for a 100 watt incandescent light bulb. This lamp is dimmable down to 20%, and UL approved for enclosed fixtures. Intelligent circuit design automatically turns bulb off at a preset position to avoid low-end flicker. End-of-life circuit design meets EURO IEC and UL standards, shutting the bulb off automatically if it senses any lamp starting issues or end of life conditions.