Electronic Protection Array For ESD And Overvoltage Protection

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 or bus 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. By littelfuse
SP721 's PackagesSP721 's pdf datasheet

SP721 Pinout, Pinouts
SP721 pinout,Pin out
This is one package pinout of SP721,If you need more pinouts please download SP721's pdf datasheet.

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