SP723 Series - SCR/Diode Array for ESD and Overvoltage Protection

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The SP723 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection of sensitive input circuits. The SP723 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.


  • ESD Interface per HBM Standards
    • IEC 61000-4-2, Direct Discharge.................8kV (Level 4)
    • IEC 61000-4-2, Air Discharge...................15kV (Level 4)
    • MIL-STD-3015.7.......................................25kV
  • Peak Current Capability
    • IEC 61000-4-5 8/20µs Peak Pulse Current.....±7A
    • Single Transient Pulse, 100s Pulse Width.......±4A
  • Designed to Provide Over-Voltage Protection
    • Single-Ended Voltage Range to...................+30V
    • Differential Voltage Range to......................±15V
  • Fast Switching.....................................2ns Risetime
  • Low Input Leakages..............................2nA at 25°C Typical
  • Low Input Capacitance..........................5pF Typical
  • An Array of 6 SCR/Diode Pairs
  • Operating Temperature Range................-40°C to 105°C


  • Microprocessor/Logic Input Protection
  • Data Bus Protection
  • Analog Device Input Protection
  • Voltage Clamp

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Catalog #AEC-Q101 QualifiedStandoff
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Obsolete: 2008 -12-31
Obsolete: 2008 -12-31
Obsolete: 2008 -12-31
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pdficon ESD and Transient Protection Using the SP720 Application Note

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AN9734 IEC Electromagnetic Compatibility Standards for Industrial Process Measurement and Control Equipment

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pdficon SP723 Series Data Sheet

The SP723 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection of sensitive input circuits...