The Infineon BAT 54-02V E6327 is a small-signal Schottky diode rated for 30 V reverse voltage and 200 mA average rectified current, housed in a surface-mount SC-79 (SOD-523) package. Schottky diodes are valued for their fast switching and low forward voltage drop compared to standard PN-junction diodes. This part's 5 ns reverse recovery time makes it suitable for high-frequency rectification, freewheeling, and clamping in power supplies, DC-DC converters, and RF circuits. The 800 mV forward voltage at 100 mA is typical for a Schottky in this current class, offering a modest efficiency gain over a PN diode in low-voltage rails.
The BAT 54-02V E6327 carries an Obsolete lifecycle status, meaning Infineon has ended production. No last-time-buy window or successor part is listed in the official record. For existing designs, you will need to source from independent distribution on the surplus market, or qualify a pin-compatible replacement. The SC-79 package is shared by many Schottky diodes in the BAT54 family, so a direct drop-in from the same series (e.g., BAT54-02V without the E6327 suffix) may be available — verify the exact package code and electrical specs against your BOM.
The 30 V reverse voltage ceiling means this diode is suited for low-voltage rails up to about 24 V with derating; do not use it in 48 V or higher circuits. The 200 mA average current rating is the continuous forward current limit — peak repetitive current can be higher, but the average must stay under this figure. The 5 ns reverse recovery time is fast enough for switching frequencies in the hundreds of kilohertz to low megahertz range, but not the fastest in the Schottky class; for sub-nanosecond recovery, look at silicon carbide or very small Schottky dies. The 10 pF junction capacitance at 1 V is low, which helps maintain signal integrity in RF clamping applications.