The P4SMA39CA from Eaton - Electronics Division is a surface-mount SMA TVS diode with 33.3 V working voltage and 53.9 V clamp voltage, rated 7.6 A peak pulse current.
The P4SMA39CA from Bourns Inc. is a surface-mount TVS diode in an SMA (DO-214AC) package, with a 33.3 V standoff voltage (VWM), 53.9 V clamping voltage and 7.6 A peak pulse current (Ipp).