SS34 is a 40V, 3A Schottky rectifier diode from On Semiconductor in a surface mount SMC package. It features low forward voltage drop and high surge current capability.
The Micro Commercial SK34-TP is a Schottky rectifier diode with a 3A current rating and a 40V reverse voltage. It is housed in an SMC (DO-214AB) package.
The SS32 is a 20V, 3A Schottky rectifier from On Semiconductor in a surface-mount SMC package. It features a low forward voltage drop of 500mV and high surge current capability of 100A.