

Overview
The B5819W is a schottky Diode made by MDD in a SOD-123 package with 2 pins. -55℃~+125℃ 1.5A 1mA@40V 25A 40V 600mV@1A Standalone SOD-123 Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Schottky, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123, from KiCad's library), ready for a KiCad board. 579,481 are in stock at JLCPCB (part C64885). 512 open-source boards in 419 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
6- Reverse voltage, most
- 40 V · max repetitive peak reverse voltage, B5819W · p. 1
- Forward current, most
- 1.5 A · max continuous forward current · p. 1
- Forward voltage
- 600 mV · max at 1 A, Ta = 25 °C · p. 1
- Forward voltage
- 900 mV · max at 3 A, Ta = 25 °C · p. 1
- Junction, hottest
- 125 °C · max operating junction temperature · p. 1
- Junction to air (SOD-123)
- 160 K/W · typical, PCB mounted with 2.0 inch × 2.0 inch copper pad areas · p. 1
What it is and has
3- Switching
- Fast switching speed · p. 1
- Package
- JEDEC SOD-123 molded plastic body · p. 1
- Marking
- SL · p. 1
Specifications
16| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Maximum Repetitive Peak Reverse Voltage V RRM | B5819W | max 40 V | 1 |
| Maximum RMS voltage V RMS | B5819W | max 28 V | 1 |
| Average rectified output current I0 | B5819W | max 1 A | 1 |
| Continuous Forward Current IFRM | B5819W | max 1.5 A | 1 |
| Non-reptitive Peak Forward Surge Current I FSM | B5819W; at 8.3ms | max 25 A | 1 |
| Power Dissipation PD | B5819W | max 500 mW | 1 |
| Typical Thermal Resistance (1) RθJA | B5819W; SOD-123; P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas | typ 160 °C /W | 1 |
| Operating Temperature Range Tj | B5819W | min -55 · max 125 °C | 1 |
| Storage Temperature Range Tstg | B5819W | min -55 · max 125 °C | 1 |
| Reverse BreakdownVoltage V (BR)R | B5819W; at IR=1mA | min 40 V | 1 |
| Maximum Forward Voltage VF | B5819W; at 1A | max 0.6 V | 1 |
| Maximum Forward Voltage VF | B5819W; at 3A | max 0.9 V | 1 |
| Peak Reverse Current IR | B5819W; at VR=20V Tj=25°C | max 1 mA | 1 |
| Peak Reverse Current IR | B5819W; at VR=20V Tj=100°C | max 10 mA | 1 |
| Typical Junction Capacitance Cj | B5819W | typ 110 pF | 1 |
| Non-Repetitive peak reverse voltage VRM | B5819W | max 40 V | 1 |
Parameters
11- Current - Rectified
- 1.5A
- Diode Configuration
- Standalone
- Junction Temperature(Max)
- 125℃
- Non-Repetitive Peak Forward Surge Current
- 25A
- Operating Junction Temperature Range
- -55℃~+125℃
- Power Dissipation
- 500mW
- Reverse Leakage Current (Ir)
- 1mA@40V
- Thermal Resistance(Junction to Ambient)
- 160℃/W
- Voltage - DC Reverse(Vr)
- 40V
- Voltage - Forward(Vf)
- 600mV
- Voltage - Forward(Vf@If)
- 600mV@1A
Order codes
1- B5819WLCSC C64885
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 512- 4 layers74 × 104 mm

- 4 layers55 × 55 mm

RBoard
pms67/LittleBrain-STM32F4-Sensorboard
STM32F4-based PCB interfacing with a variety of sensors.
90 parts339 - 4 layers140 × 100 mm

Dc usv
TobleMiner/DC-UPS
A small DC UPS, designed to keep small appliances like consumer network equipment running during power outages
351 parts223CERN-OHL-P-2.0 - 4 layers70 × 43 mm

USMU v10
joeltroughton/uSMU
Credit card-sized, USB-powered 4 quadrant source-measure unit hardware and firmware
137 parts187 - 2 layers100 × 100 mm

Heatplate v1.1
DerSpatz/PCB-reflow-solder-heat-plate
hardware design for a PCB reflow solder heat plate
57 parts179MIT - 2 layers87.6 × 73 mm

Stemcell panel
megamind4089/STeMCell
STM32F4 breakout board in pro micro pinout. Designed mainly for ergo split keyboards.
258 parts123 - 2 layers267 × 300 mm

Output.Panel R0.5.1 300x300 2layer step1 Modified
rusefi/hw_microRusEfi
microRusEfi board for rusEfi ECU
2,371 parts98 - 2 layers25.3 × 48.2 mm

ESP32-Devkit Type C
TobleMiner/ESP32-Devkit-Type-C
Breadboard friendly, USB Type C enabled, ESP32 Devkit compatible, JLCPCB assembly ready ESP32 devboard
57 parts92MIT
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Is there a KiCad symbol and footprint for the B5819W?
Yes. The symbol is Device:D_Schottky and the footprint Diode_SMD:D_SOD-123, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the B5819W?
SOD-123, with 2 pins. Its footprint is drawn on this page.
Where is the B5819W datasheet?
MDD publishes it: the Datasheet link on this page opens it.
Where can I order the B5819W?
JLCPCB lists it as part C64885, with 579,481 in stock; the sellers' links on this page open their listings.
What can replace the B5819W?
Parts like it in the library: the DSK24 by FUXINSEMI, the DSK34 by FUXINSEMI, the DSS34 by FUXINSEMI and the DSS26 by BORN. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the B5819W?
512 boards in 419 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
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