Please note that this bulb the size: 9.5*34.5mm, is almost same as a traditional halogen bulb, which can directly replace halogen’s space. But this bulb ONLY used for 12 volts(AC12V and DC12V) lighting appliance. Non-dimmable, please don't use them with dimmer or unstable 12 volts, or the bulbs will flicker or make noise.
If you use this bulb to replace the halogen lamp and the bulb are blinking (flickering) after installation; there are two way to avoid flickering: 1. Change your transformer to LED driver; 2. Keep one halogen lamp it your light system, don't all install led.