BAT54J,115

BAT54J,115 is a variant of the BAT54 family: a dual Schottky barrier diode in a three‑pin package (SOT‑23). It contains two Schottky diodes in one device; the two diodes share a common pin (configuration can be common cathode or common anode depending on the exact variant—verify from the datasheet).
Typical characteristics (per diode, approximate): very low forward voltage drop ~0.2–0.3 V at small currents, fast switching, and moderate reverse voltage rating (often tens of volts). Forward current rating is typically around 150–200 mA per diode, with a maximum junction temperature up to about 125 °C. Leakage increases with temperature.
Common uses: low-voltage logic clipping and protection, diode-ORing, signal routing, and fast rectification in compact or high-speed circuits.
Notes: “115” is an internal/packaging/temperature designation and can vary by manufacturer; always check the specific datasheet for the exact pinout, configuration (common cathode vs. common anode), current rating, and voltage rating for your exact lot.

Here are the typical features of BAT54J (dual Schottky diodes in SOT-23):
- Dual Schottky barrier diodes in a single SOT-23 package
- Very low forward voltage drop (VF roughly 0.20–0.40 V depending on current)
- Very fast switching; negligible reverse recovery
- Reverse voltage rating (VRRM) about 30 V
- Forward current rating (IF(AV)) ~200 mA
- Low reverse leakage current
- RoHS-compliant, surface-mount device
- Pin configuration: two diodes sharing a common pin (exact common-node type (common anode vs. common cathode) depends on the specific BAT54J variant; check datasheet for the exact pinout)
- Suitable for fast logic-level shifting, protection, clamping, and OR-ing applications
Note: Verify the exact pinout/configuration for your BAT54J variant in the datasheet, as “J” variants can differ in common pin arrangement.

BAT54J is in a SOT-23 (3‑pin) surface-mount package. The “115” is likely a date/lot code, not a package type.

Pin count: 3 (SOT-23 package).
Function: Dual Schottky barrier diodes with a common cathode (two diodes share the cathode). Used for low‑voltage, high‑speed switching, OR’ing, or clamping.
Pinout (typical):
- Pin 1: Anode of D1
- Pin 2: Common cathode
- Pin 3: Anode of D2
Note: The trailing “,115” is likely a lot/date code and does not affect the electrical function.

Manufacturer: Vishay Intertechnology.
What kind of company: Vishay is a global semiconductor and passive components manufacturer, specializing in discrete diodes, transistors, resistors, capacitors, and related electronic components.

BAT54J is a dual Schottky diode with low forward drop and fast switching. Common applications:
- Low-voltage rectification in small power supplies
- Input protection, polarity protection, and clamping for CMOS/TTL logic
- Level shifting and diode-OR/diode-AND of rails
- High-speed signal detection and envelope/ demodulation in RF/communications
- Pulse/clock switching and other compact, low-power rectifier/detector roles
Note: BAT54J-115 variants use the same electrical characteristics and applications.

BAT54J is a dual Schottky diode in SOT-23. Equivalents are other dual Schottky diodes in SOT-23 with the same pinout, such as BAT54S and BAT54C (same family, different side configurations). Other manufacturers’ cross-ref numbers exist (ON Semiconductor, Diodes Inc, etc.). Always verify pinout and diode configuration (anode/cathode) before substitution.