The HSP051-4M5 is a 4-channel ESD array with a rail to rail architecture designed specifically for the protection of high speed differential lines. The device is packaged in μQFN 1.3 mm x 0.8 mm with a 500 μm pitch.

Very compact 500 μm pitch package, for easy PCB layout
Very-large bandwidth: 11.5 GHz
Very-low capacitance: 0.2 pF (I/O to I/O) and 0.35 pF (I/O to GND)
Very low dynamic resistance : 0.35 Ω
Low leakage current: < 1 nA
High ESD protection level
High integration
Suitable for high density boards
Extended operating junction temperature range : -40 °C to 150 °C
±20 kV (contact discharge)
±30 kV (air discharge)