SM712 Series - 600W Asymmetrical TVS Diode Array- Qualified to AEC-Q101

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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.

Littelfuse SM712 Series TVS Diode Array (SPA® Diodes) is designed to protect RS-485 applications with asymmetrical working voltages (-7V to 12V) from damage due to electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surges. It can absorb repetitive ESD strikes above the maximum level specified in the IEC61000-4-2 international standard without performance degradation and safely dissipate up to 19A of 8/20μs surge current (IEC-61000-4-5) with very low clamping voltages.


  • Robust surge and enhanced ESD protection: ESD, IEC61000-4-2: ±30kV (contact); EFT, IEC61000-4-2: 50A; Lightning, IEC61000-4-5: 19A; Peak pulse power: 600W
  • Asymmetrical standoff voltage matches RS-485 transceiver profile
  • Low dynamic resistance (0.5Ω TYP) offers superb clamping performance
  • Minimal capacitive loading of 75pF (MAX)
  • AEC-Q101 qualified


  • RS-485
  • Fieldbus
  • Modbus
  • Profibus
  • DMX512
  • Security Systems
  • Automated Teller Machines (ATMs)
  • Automation Equipment
  • Communication Equipment

Access specifications, certifications, check availability and order parts below

Catalog #AEC-Q101 QualifiedStandoff
ESD Contact
PolarityChannelsCheck StockPartner ECAD ModelsStockSamples
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
SM712-02HTG 2Ch 30KV +12 to -7V TVS Diode Array SOT2 RoHS No 05/24/2015 PbFree No 05/24/2015 CoC_RoHS10_SM712-02HTG REACH219_Declaration_SM712-02HTG No
Does not Contain IPC_SM712-02HTG_EH
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pdficon TVS Diode Array SPA SM712 Datasheet

The SM712 TVS Diode Array is designed to protect RS-485 applications with asymmetrical working voltages (-7V to 12V) from damage due to electrostatic discharge (ESD) electrical fast transients (EFT) and lightning induced surges.