The AP1117D33 is a voltage regulator manufactured by Anachip Corp. It is a highly reliable and efficient device that provides a stable output voltage. With a medium popularity and a limited supply and demand status, this device is a popular choice for many applications. The fake threat in the open market is at 51 percent, so it is important to purchase from a reliable source. Alternative parts, such as NCV1117DT33T5G, AP1117D33L, and AP1117D33A, are also available.