DataSheet:TVS Diode Array SP721 Lead-Free/Green Datasheet
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. Overvoltage 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.
Catalog # | StandoffVoltage(V) | ILeak(μA) | ESD Contact(kV) | ESD Air(kV) | LightningImmunity(8x20μs)(A) | CI/OTYP(pF) | Size | Polarity | Channels | Mounting |
---|---|---|---|---|---|---|---|---|---|---|
SP721ABG | 30 | 0.02 | 4 | 15 | 3 | 3 | SOIC-8 | Bipolar | 6 | Surface Mount |
SP721ABTG | 30 | 0.02 | 4 | 15 | 3 | 3 | SOIC-8 | Bipolar | 6 | Surface Mount |
SP721APP | 30 | 0.02 | 4 | 15 | 3 | 3 | PDIP-8 | Bipolar | 6 | Through Hole |