Symbol 5134 from IEC 60417 - Title/Meaning: Electrostatic sensitive devices Function/description: To indicate packages containing electrostatic sensitive devices, or to identify a device or a connector that has not been tested for immunity to electrostatic discharge.
Additional information: 
For further information see IEC 60747-1
Published in: Supplement G, 1985;3C/1069/FDIS
Own work using: iso.org/obp/graphics/grs/09f6eda8-98d8-4e69-97f5-bb2158a428ea 200.png
Vectorization:  Mrmw