Diodes Incorporated 1N5819HW-7-F - Semicone IC Supplier

Mfr	Diodes Incorporated
Device Type	Schottky Barrier Rectifier
Repetitive Peak Reverse Voltage	40 V
DC Reverse Voltage	40 V
Average Rectified Forward Current	1 A
Non-Repetitive Peak Forward Surge Current	25 A
Forward Voltage	450 mV, 750 mV
Reverse Leakage Current	1 mA, 50 µA
Diode Capacitance	60 pF
Power Dissipation	250 mW
Operating Temperature	-65°C to +125°C
Package	SOD-123
Mounting Type	Surface Mount
Compliance	RoHS Compliant

The 1N5819HW-7-F is a high-performance Schottky barrier rectifier manufactured by Diodes Incorporated, featuring a maximum repetitive reverse voltage of 40V and an average forward current rating of 1A in a compact SOD-123 surface-mount package. This device is engineered with a low forward voltage drop of typically 0.45V at 1A, which minimizes conduction losses and enhances overall circuit efficiency in power management applications. The Schottky construction enables extremely fast switching with negligible reverse recovery time, making it particularly suitable for high-frequency operation where standard PN junction diodes would introduce unacceptable switching losses. Housed in a space-efficient SOD-123 package with matte tin terminations, the 1N5819HW-7-F is fully RoHS-compliant and specified for operation across a temperature range of -65°C to +125°C, supporting reliable performance in demanding commercial and industrial environments.
Applications
The 1N5819HW-7-F serves as a critical component in power supply circuits including DC/DC converters, voltage regulators, and battery charging systems where low forward losses and fast recovery are essential. It functions effectively as a freewheeling diode in switching regulator topologies, clamping inductive kickback voltages generated by relays, motors, and transformers in automotive and industrial control systems. Additional applications include reverse polarity protection for battery-operated devices, ORing diodes in redundant power architectures, and rectification stages in low-voltage high-frequency inverters where efficiency and thermal performance are paramount design considerations.
FAQs
Q: Can this Schottky diode handle reverse voltage continuously?
A: Yes, the device is rated for a maximum repetitive reverse voltage (VRRM) of 40V, though designers should apply appropriate derating for reliable long-term operation in high-temperature environments.
Q: How does this device perform in high-frequency switching applications?
A: The Schottky barrier construction provides negligible reverse recovery time (typically <5ns) and low junction capacitance (approximately 50pF), enabling efficient operation in switching circuits up to several hundred kilohertz.
Alternative Schottky diode Models
1. Vishay SS14: A 40V, 1A Schottky rectifier in SMA (DO-214AC) package offering similar electrical characteristics with the reliability of Vishay Semiconductor's established manufacturing processes for power management applications.
2. Micro Commercial Components 1N5819HW-TP: A direct form-fit-function equivalent in SOD-123 package providing identical voltage and current ratings with competitive pricing for commercial and industrial designs.
3. ON Semiconductor MBR1100: A 100V, 1A Schottky barrier rectifier delivering higher reverse voltage capability while maintaining low forward voltage drop for applications requiring additional voltage margin.