What are bi-pin and 4-pin bases, and what are they used for?

<a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Bi-Pin/N-5yc1vZbmbuZ1z0tnc5?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Bi-pin bases</a>, including the <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Miniature-Bi-Pin/N-5yc1vZbmbuZ1z21ms6?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">miniature</a> and <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Medium-Bi-Pin/N-5yc1vZbmbuZ1z21luf?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">medium bi-pin</a>, have two small pins that push into a socket commonly used for halogen or some LED bulbs in undercabinet lighting or desk lamps. <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/4-Pin/N-5yc1vZbmbuZ1z21lyb?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">4-pin bases</a>, with their four pins, are often found in fluorescent and compact fluorescent (CFL) bulbs; they are designed for fixtures requiring a more secure connection and may need specific ballast compatibility.

What are some popular brands of edison light bulbs?

Some popular brands known for high-quality edison light bulbs include <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/EcoSmart/Edison/N-5yc1vZbmbuZ4b8Z1z21qj1?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">EcoSmart</a>, <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Viribright/Edison/N-5yc1vZbmbuZhs2Z1z21qj1?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Viribright</a>, and more.

What are type A light bulbs, and why are they so common?

<a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Type-A/N-5yc1vZbmbuZ1z1dq82?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Type A light bulbs</a> are the classic, pear-shaped bulbs you're most likely familiar with. They fit standard medium-base sockets and are widely used in lamps and fixtures throughout homes. Their popularity stems from their versatility, affordability, and compatibility with most everyday lighting setups, making them a reliable choice for general illumination.

Which features should I look for when purchasing light bulbs?

There are many different features that will elevate your lighting, including <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Edison/Ceiling-Fan-Rated/N-5yc1vZbmbuZ1z17iblZ1z21qj1?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">ceiling fan rated</a>, <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Edison/Dimmable/N-5yc1vZbmbuZ1z0u4xvZ1z21qj1?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">dimmable</a>, and <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Edison/Enclosed-Fixture-Rated/N-5yc1vZbmbuZ1z17hnfZ1z21qj1?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">enclosed fixture rated</a>.