This part is a kind of semiconductor called 20WZ11.

Function of this product has PQ20WZ11.

Manufacturers : Sharp

Image and pinout :

Some of the text within the PDF file :

Low Power-Loss Voltage Regulators PQ20WZ51/PQ20WZ11 PQ20WZ51/PQ20WZ11 Variable Output, General Purpose, Surface Mount Type Low Power-Loss Voltage Regulator s q Features s Outline Dimensions 6.6 MAX. 5.2 ± 0.5 2.3 ± 0.5 (Unit : mm) Low power-loss (Dropout voltage : MAX. 0.5V) q Surface mount package (equivalent to SC-63) q Variable output voltage (3.0 to 20V) q Output current (0.5A : PQ20WZ51) (1.0A : PQ20WZ11) q Reference voltage precision : ±2.5% q Built-in ON/OFF control function q Low dissipation current at OFF-state (Iqs : MAX. 5µA) q Built-in overcurrent, overheat protection functions, ASO protection circuit q Available tape-packaged products (ø330mm reel : 3 000 pcs., PQ20WZ5U/1U) ( 0.5 ) 3 9.7 MAX. 5.5 ± 0.5 Model No. Epoxy resin ( 1.7 ) 2.5 MIN. 0.5± 0.2 0.1 4 [ ... ]

20WZ11 PDF Datasheet Download