STMICROELECTRONICS 1N5819 Schottky Rectifier, 40V 1A, DO-41 Package

The STMICROELECTRONICS 1N5819 is an axial leaded, low drop power Schottky rectifier housed in a DO-41 package. Engineered for superior efficiency, these diodes feature exceptionally small conduction losses and negligible switching losses, enabling extremely fast switching performance and a low forward voltage drop. This makes them an ideal choice for high-frequency and power-sensitive applications where energy conservation and thermal management are critical.

Designed with robust avalanche capability, the rectifier offers reliable operation under transient conditions. Its key specifications include a maximum repetitive reverse voltage (Vrrm) of 40V and a non-repetitive forward surge current (IFSM) of 25A, providing a strong buffer against current spikes. With a forward current (If(AV)) of 1A and a maximum forward voltage (VF) of just 850mV at 3A, it ensures efficient power conversion with minimal loss.

Primary Applications

This Schottky rectifier is typically suited for modern electronic designs, including switch mode power supplies (SMPS), high-frequency DC to DC converters, and inverters. It is also perfect for freewheeling diode functions, reverse polarity protection circuits, and compact battery chargers. Its performance characteristics make it a staple in power management systems across industrial, portable device, and consumer electronics sectors.

Key Specifications

• Package: DO-41 (DO-204AL) through-hole mounting
• Configuration: Single diode
• Peak Repetitive Reverse Voltage: 40V
• Average Forward Current: 1A
• Maximum Forward Voltage: 550mV (typical low drop)
• Forward Surge Current: 25A (at tp 10ms)
• Maximum Junction Temperature: 150°C
• Dimensions (approx.): 43mm (Height) x 33mm (Width) x 15mm (Depth)
• Weight: Approximately 0.3 grams

Offering a combination of speed, efficiency, and a