SP725 Series - 5pF, 8kV, SCR & Diode Rail Clamp Array

External overview image
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The SP725 is an array of SCR/Diode bipolar structures for ESD and overvoltage protection of sensitive input circuits. The SP725 has 2 protection SCR/Diode device structures per input. There are a total of 4 available inputs that can be used to protect up to 4 external signal or bus lines. Over-voltage protection is from the IN (Pins 1 - 4) to V+ or V-.

The SCR structures are designed for fast triggering at a threshold of one +VBE diode threshold above V+ (Pin 5,6) or one –VBE diode threshold below V- (Pin 7,8). 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.

Features & Benefits:

  • 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 8/20 μs Peak Pulse Current - ± 14 A; Single Transient Pulse, 100 μs Pulse Width - ± 8 A
  • Designed to Provide Over-Voltage Protection: Single-Ended Voltage Range to - +30V; Differential Voltage Range to - ±15V;
  • Fast Switching - 2ns Risetime
  • Low Input Leakages - 5 nA at 25 °C Typical
  • Low Input Capacitance - 5 pF Typical
  • An Array of 4 SCR/Diode Pairs
  • Operating Temperature Range - -40 °C to 105 °C


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

Access specifications, certifications, check availability and order parts below

Catalog #Standoff
ESD Contact
PolarityChannelsMIN VBR@IT
PackagePartner ECAD ModelsStockSamplesCompare
Obsolete: 2022 -07-26
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
SP725AATG 4 Ch 14A 30V SCR MSOP10 RoHS No 03/17/2011 PbFree No 02/01/2006 No
SP725ABG 6Ch High Energy SCR Array SOIC8 RoHS No 03/17/2011 PbFree No 02/01/2006 No
SP725ABTG 6Ch High Energy SCR Array SOIC8 T&R RoHS No 03/17/2011 PbFree No 02/01/2006 CoC_RoHS10_SP725ABTG REACH211_Declaration_SP725ABTG Yes
Does not Contain IPC_SP725ABTG
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.

pdficon ESD and Transient Protection Using the SP720 Application Note

This application note discusses ESD and transient protection using the SP720. For a given level of voltage or power there is a defined degree of protection compatible to that need. For the SP720 the protection circuits are designed to clamp over-voltage within a range of peak current that will substantially improve the survival input expectancy of average monolithic silicon circuits used for small signal and digital processing applications.

pdficon ESD System Level Guide

Designers of today’s electronic devices have demanded more functionality with greater flexibility and higher levels of user interaction...

pdficon TVS Diode Array SPA SP725 Datasheet

The SP725 is an array of SCR/Diode bipolar structures for ESD and overvoltage protection of sensitive input circuits...

pdficon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive industrial handheld computer and telecom markets...

pdficon Circuit Protection Products Selection Guide