This part is a kind of semiconductor called J105.
Function of this product has N-Channel JFETs.
Manufacturers : Vishay Telefunken
Image and pinout :

Some of the text within the PDF file :
J105/106/107 Vishay Siliconix N-Channel JFETs PRODUCT SUMMARY Part Number J105 J106 J107 VGS(off) (V) –4.5 to –10 –2 to –6 –0.5 to –4.5 rDS(on) Max (W) 3 6 8 ID(off) Typ (pA) 10 10 10 tON Typ (ns) 14 14 14 FEATURES D D D D D Low On-Resistance: J105 < 3 W Fast SwitchingtON: 14 ns Low Leakage: 10 pA Low Capacitance: 20 pF Low Insertion Loss BENEFITS D D D D D Low Error Voltage High-Speed Analog Circuit Performance Negligible “Off-Error,” Excellent Accuracy Good Frequency Response Eliminates Additional Buffering APPLICATIONS D D D D D Analog Switches Choppers Sample-and-Hold Normally “On” Switches Current Limiters DESCRIPTION The J105/106/107 are high-performance JFET analog switches designed to offer low on-resistance and fast switching. rDS(on) <3 W is guara [ ... ]
J105 PDF Datasheet Download
