This part is a kind of semiconductor called 1SMA5920BT3G.

Function of this product has 1.5 Watt Plastic Surface Mount Zener Voltage Regulators.

Manufacturers : ON Semiconductor

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1SMA59xxBT3G Series, SZ1SMA59xxBT3G Series 1.5 Watt Plastic Surface Mount Zener Voltage Regulators This complete new line of 1.5 Watt Zener Diodes offers the following advantages. Features  Standard Zener Breakdown Voltage Range − 3.3 V to 68 V  ESD Rating of Class 3 (> 16 kV) per Human Body Model  Flat Handling Surface for Accurate Placement  Package Design for Top Slide or Bottom Circuit Board Mounting  Low Profile Package  Ideal Replacement for MELF Packages  AEC−Q101 Qualified and PPAP Capable − SZ1SMA59xxBT3G  SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements  Pb−Free Packages are Available* Mechanical Characteristics: CASE: Void-free, transfer-molded plastic FINISH: All external surfaces are corro [ ... ]

1SMA5920BT3G PDF Datasheet Download