Littelfuse, Inc. Overvoltage Protection - TVS Diode Arrays - General Purpose - Series: SP721 - SP721AB SP721AB

The SP721 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection to sensitive input circuits. The SP721 has 2 protection SCR/Diode device structures per input. There are a total of 6 available inputs that can be used to protect up to 6 external signal orbus lines. Over-voltage protection is from the IN (Pins 1 - 3 and Pins 5 - 7) to V+ or V-. The SCR structures are designed for fast triggering at a threshold of one +VBE diode threshold above V+ (Pin 8) or a -VBE diode threshold below V- (Pin 4). From an IN input, a clamp to V+ is activated if a transient pulse causes the input to be increased to a voltage level greater than one VBE above V+. A similar clamp to V- is activated if a negative pulse, one VBE less than V-, is applied to an IN input. ESD Interface Capability for HBM Standards MIL STD 3015.7 15kV IEC 61000-4-2, Direct Discharge, Single Input 4 kV (Level 2) Two Inputs in Parallel 8 kV (Level 4) IEC 61000-4-2, Air Discharge 15 kV (Level 4) High Peak Current Capability IEC 61000-4-5 (8/20µs) ±3A Single Pulse, 100µs Pulse Width............... ±2A Single Pulse, 4 µs Pulse Width ±5 A

TVS DEVICE MIXED 8SOIC