This part is a kind of semiconductor called WS78L09.

Function of this product has Three-terminal positive voltage regulator.

Manufacturers : Guanxin

Image and pinout :

Some of the text within the PDF file :

WS78L09 Three-terminal positive voltage regulator TO-92 1. OUT FEATURES Maximum Output current IOM: 0.1 A Output voltage Vo: 9 V Continuous total dissipation PD: 0.625 W ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Parameter Input Voltage Operating Junction Temperature Range Storage Temperature Range Symbol Vl TOPR TSTG Value 30 0-+150 -55-+150 Unit V ℃ ℃ Typ 9.0 9.0 9.0 19 11 45 40 4.1 Max 9.36 9.45 9.45 90 40 175 125 6.0 1.5 0.1 58 45 1.7 Unit V V V mV mV mV mV mA mA mA μV dB V 2. GND 3. IN ELECTRICAL CHARACTERISTICS AT SPECIFIED VIRTUAL JINCTION TEMPERATURE (Vi=16V,Io=40mA,Ci=0.33μF,Co=0.1μF, unless otherwise specified) Pa rameter Output voltage Symbol Vo Test conditions 25℃ 12V≤V l≤24V, Io=1mA-40mA Io=1mA-70mA 0-125℃ [ ... ]

WS78L09 PDF Datasheet Download