The BAT54 series is a 40 V Schottky barrier diode from ST with SOD-23, SOD-323, SOD-523, SOT-23, SOD-323 or SOT-666 packages. The main features are low conduction and reverse losses, negligible switching losses, low forward and reverse recovery times, extremely fast switching and low capacitance diodes.
The BAT54 series from STMicroelectronics provides 40 V Schottky barrier diodes in SOD‑23, SOD‑323, SOD‑523, SOT‑23, SOT‑323 and SOT‑666 packages. They are designed for low conduction and reverse losses, negligible switching losses, and extremely fast switching, making them suitable for a wide range of electronic applications.
Key specifications include a continuous forward current of 300 mA, reverse leakage current as low as 1 µA at 30 V, forward voltage drop ranging from 240 mV to 900 mV depending on current, diode capacitance of 7‑10 pF, and reverse recovery time of about 5 ns. Thermal resistance is 500‑600 °C/W and the devices operate from –40 °C to +150 °C with a storage range of –65 °C to +150 °C.
| Maximum reverse voltage (VRRM) | 40 V |
|---|---|
| Continuous forward current (IF) | 300 mA |
| Surge forward current (IFSM) | 1 A (10 ms pulse) |
| Diode capacitance (C) | 7‑10 pF (typ) |
| Storage temperature range | -65 °C to +150 °C |
| Maximum soldering temperature | 260 °C |
The BAT54 series can withstand a repetitive peak reverse voltage of 40 V.
BAT54 diodes are offered in SOD‑23, SOD‑323, SOD‑523, SOT‑23, SOT‑323 and SOT‑666 packages.
The diode capacitance is typically between 7 pF and 10 pF at 1 V and 1 MHz.