1N5819

Overview

The Diotec Semiconductor 1N5819 is a Schottky Barrier Rectifier Diode designed for low voltage and high frequency applications. It features an average forward current (IFAV) of 1 A and a peak forward surge current (IFSM) of 40 A at 50 Hz or 44 A at 60 Hz. The device has a maximum forward voltage (VF) of less than 0.90 V at 3.0 A and 25°C, with a typical junction capacitance of 80 pF at 4 V reverse bias. Reverse leakage current is specified as less than 1 mA at 25°C and less than 10 mA at 100°C when VR equals VRRM. The component operates within a junction temperature range of -50 to +150°C and a storage temperature range of -50 to +175°C.

Feature Summary

• Schottky barrier construction provides extremely fast switching speeds and negligible switching losses.
• Low forward voltage drop minimizes conduction losses in power circuits.
• Hermetically sealed axial lead glass package ensures ruggedness and reliability.
• Capable of handling high non-repetitive forward surge currents.

Applications

• High frequency rectifiers
• Reverse polarity protection
• Free wheeling diodes in inverter circuits
• Small battery chargers

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Diotec Semiconductor before finalizing procurement plans. Confirm that the intended application falls within standard commercial or industrial grade reliability requirements, as the component is not designated for life-support systems without customer validation. Ensure thermal management aligns with the specified junction-to-ambient thermal resistance values under actual operating conditions.

Selection Notes

Select this component for designs requiring efficient low-voltage rectification where minimizing forward voltage drop is critical. The DO-41 axial package suits through-hole mounting constraints. Evaluate the thermal environment carefully, as the rated forward current decreases significantly as ambient temperature rises above 25°C. Ensure the circuit's peak reverse voltage does not exceed the device's breakdown rating to prevent failure.

Part Context

The 1N5819 belongs to a family of silicon Schottky rectifiers manufactured by Diotec Semiconductor AG. These devices are engineered for general-purpose use in standard electronic equipment. The product line emphasizes robust performance in environments demanding reliable switching and low power dissipation. The axial glass package is a standard industry form factor widely recognized for ease of integration into traditional printed circuit board layouts.

Replacement Considerations

Cross-reference electrical parameters such as forward voltage and reverse leakage current when substituting with other manufacturers' 1N5819 equivalents. Verify that alternative components meet the same thermal resistance and surge current ratings to maintain system reliability.