This part is a kind of semiconductor called KSP92.

Function of this product has P-channel enhancement mode vertical D-MOS transistor.

Manufacturers : Guangdong Kexin Industrial

Image and pinout :

Some of the text within the PDF file :

SMD Type P-channel enhancement mode vertical D-MOS transistor KSP92 SOT-223 Transistors IC Unit: mm +0.2 3.50-0.2 0.1max +0.05 0.90-0.05 Features Low threshold voltage VGS(th) Direct interface to C-MOS, TTL,etc. High-speed switching No secondary breakdown. 1 6.50 +0.2 -0.2 +0.1 3.00-0.1 +0.2 0.90-0.2 +0.3 7.00-0.3 4 2 2.9 4.6 3 +0.1 0.70-0.1 1 gate 2,4 drain 3 source Absolute Maximum Ratings Ta = 25 Parameter drain-source voltage gate-source voltage (open drain) DC drain current peak drain current total power dissipation (up to Tamb = 25 *) storage temperature range junction temperature from junction to ambient* Symbol -VDS VGSO -ID -IDM Ptot Tstg Tj Rth j-a Rating 240 20 180 720 1.5 -65 to 150 150 83.3 K/W Unit V V mA mA W * Transistor mounted on an epoxy [ ... ]

KSP92 PDF Datasheet Download