

Overview
The BAT54S is a schottky Diode made by STMicroelectronics in a SOT-23 package with 3 pins. -55℃~+150℃ 1 Pair Series Connection 200mA 2uA@25V 30V 600mA 800mV@100mA SOT-23 Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:BAT54S, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 30,816 are in stock at JLCPCB (part C83935). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
8- Current - Rectified
- 200mA
- Diode Configuration
- 1 Pair Series Connection
- Non-Repetitive Peak Forward Surge Current
- 600mA
- Operating Junction Temperature Range
- -55℃~+150℃
- Power Dissipation
- 290mW
- Reverse Leakage Current (Ir)
- 2uA@25V
- Voltage - DC Reverse(Vr)
- 30V
- Voltage - Forward(Vf@If)
- 800mV@100mA
Order codes
1- BAT54SLCSC C83935
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | A | Passive |
| 2 | K | Passive |
| 3 | COM | Passive |
Open-source boards using it
All 1- 4 layers80 × 50.5 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/st/BAT54S" title="BAT54S in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/BAT54S.jpg" alt="BAT54S" width="1200" height="900">[](https://pcbkit.io/parts/st/BAT54S)Questions
Is there a KiCad symbol and footprint for the BAT54S?
Yes. The symbol is Diode:BAT54S and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BAT54S?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the BAT54S datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the BAT54S?
JLCPCB lists it as part C83935, with 30,816 in stock; the sellers' links on this page open their listings.
What can replace the BAT54S?
Parts like it in the library: the PMEG4010ET by Nexperia, the BAT400D by Diodes Incorporated, the BAS40 by Diodes Incorporated and the BAS40-04-7-F by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BAT54S?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8PMEG4010ET
SOT-231 Independent 100uA@40V 1A 40V 640mV@1A 9A SOT-23 Schottky Diodes ROHSNexperiaSchottky DiodesBAT400D
SOT-23-40℃~+125℃ 2uA@30V 3A 40V 480mV@500mA 500mA Independent SOT-23 Schottky Diodes ROHSDiodes IncorporatedSchottky DiodesBAS40
SOT-23-55℃~+125℃ 1 Independent 1V@40mA 200mA 200nA@30V 40V 600mA SOT-23 Schottky Diodes ROHSDiodes IncorporatedSchottky DiodesBAS40-04-7-F
SOT-23-55℃~+125℃ 1 Pair Series Connection 1V@40mA 200mA 200nA@30V 40V 600mA SOT-23 Schottky Diodes ROHSDiodes IncorporatedSchottky DiodesBAT750
SOT-23-55℃~+125℃ 1 Independent 100uA@30V 40V 490mV@750mA 5.5A 750mA SOT-23 Schottky Diodes ROHSDiodes IncorporatedSchottky DiodesBAT54A-HAF
SOT-23-55℃~+150℃ 1 Pair Common Anode 2uA@25V 300mA 30V 600mA 800mV@100mA SOT-23 Schottky Diodes ROHSSTMicroelectronicsSchottky DiodesBAT54C
SOT-23-55℃~+150℃ 1 Pair Common Cathode 200mA 2uA@25V 30V 600mA 800mV@100mA SOT-23 Schottky Diodes ROHSSTMicroelectronicsSchottky DiodesBAS40-05
SOT-23-55℃~+125℃ 1 Pair Common Cathode 1V@40mA 200mA 200nA@30V 40V 600mA SOT-23 Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes