The 1N4478/TR is a 400mW small-signal diode made by Microchip. This diode is designed to handle general-purpose switching and signal applications. It has a low-voltage drop and can carry a maximum forward current of 200mA. It is packaged in a hermetically sealed axial leaded form. The 1N4478/TR is designed to withstand temperature variations and is capable of operating over a wide range of temperature and humidity ranges. It has a minimum junction temperature of -55C, and it can handle a maximum reverse voltage of 200V. Its durability and dependability make it suitable for a variety of industrial, consumer, and audio applications.