View ssrp130 datasheet:

SSRP130B1 ? Application Specific Discretes DUAL ASYMMETRICAL OVERVOLTAGE A.S.D.? PROTECTION FOR TELECOM LINE MAIN APPICATIONS Where asymmetrical protection against lightning strikes and othertransientovervoltagesis required: Solid-State relays SLIC with integrated ring generator DESCRIPTION The SSRP130B1 is a dual asymmetrical transient SO8 voltage suppressor designed to protect a solid-state ring relay or SLICs with integrated ring generator fromovervoltages. The asymmetrical protection configuration is necessary to allow the use of all different types of FUNCTIONAL DIAGRAM ringing schemes. TIP 1 8 GND FEATURES Dual bidirectional asymmetrical protection : NC 2 7 GND Stand-offvoltages : + 130V for positive voltages NC - 185V for negative voltages 3 6 GND Peak