Vishay Intertechnology's SMBJ18CA is a bidirectional TRANS VOLTAGE SUPPRESSOR DIODE with a max clamping voltage of 29.2 V and a breakdown voltage of 21.05 V. It is surface mountable and commonly used in transient suppression applications.
1N5819HW-7-F by Diodes Inc. is a Schottky rectifier diode with 40V reverse test voltage, 1A output current, and 0.75V forward voltage. It's a surface mount device in a small outline package ideal for efficiency applications at temperatures ranging from -65 to 125°C.
Diodes Incorporated BAV99W-7-F is a fast recovery rectifier diode with 2 elements in series connected, center tap configuration. It has a max reverse recovery time of 0.004 us and can handle a max output current of 0.15 A. Ideal for applications requiring fast switching capabilities and operating temperatures ranging from -65 to 150 °C.