S4 1N5819 40V 1A  Schottky Rectifier Diode SOD-123

S4 1N5819 40V 1A Schottky Rectifier Diode SOD-123 is a fast-switching, low forward voltage drop diode designed for high-efficiency rectification in power supplies, DC-DC converters, and polarity protection circuits. With a peak reverse voltage of 40V and forward current capability of 1A, it is ideal for compact surface-mount designs.

Key Features:

• Low forward voltage drop for efficient power conversion
• Fast switching capability for high-frequency circuits
• Surface-mountable SOD-123 package
• High surge current capability
• RoHS compliant and halogen-free

Technical Specifications:

• Part Number: S4 1N5819
• Type: Schottky Barrier Rectifier Diode
• Maximum Reverse Voltage (V_R): 40V
• Maximum Forward Current (I_F): 1A continuous
• Peak Surge Current (I_FSM): 25A
• Forward Voltage Drop (V_F): 0.60V max @ 1A
• Reverse Leakage Current (I_R): 1mA @ 25V
• Reverse Recovery Time: Typically < 5ns

Mechanical Specifications:

• Package Type: SOD-123
• Lead-Free: Yes
• Mounting Orientation: Unidirectional, surface mount
• Polarity: Cathode marked with band

Dimensions:

• Package Size: 2.7mm (L) x 1.6mm (W) x 1.1mm (H)
• Lead Pitch: 2.5mm typical

Mounting Options:

• Suitable for reflow and wave soldering
• Compatible with standard SOD-123 PCB footprint
• Ideal for compact PCBs and space-constrained designs

Schematic Diagram, Connection, Wiring and Pinout:

• Pin 1: Anode
• Pin 2: Cathode (band marked)
• Symbol: Standard Schottky diode symbol (→|—)
• Can be used in series or parallel for voltage/current scaling

Datasheet/User Manual:

• 1N5819 SOD-123 Schottky Diode Datasheet

Applications:

• Polarity protection in battery-powered devices
• Freewheeling diode in inductive loads
• DC-DC converter output rectification
• Low voltage switching power supplies
• Solar charger and USB-powered devices

Equivalent:

• SS14: 40V 1A Schottky in SMA package
• MBR140: 40V 1A Schottky, DO-41 or SMA
• SK14: 40V 1A fast switching SMD Schottky
• SR140: General-purpose 1A Schottky equivalent

Package Includes:

• 1 x S4 1N5819 40V 1A Schottky Rectifier Diode (SOD-123)