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The SMX1J Transil has been designed to protect sensitive equipment against electro-static discharges according to IEC 61000-4-2, MIL STD 883 Method 3015, and electrical over stress such as IEC 61000-4-4 and 5. They are generally for surges below 85 W 10/1000 μs.

The Planar technology makes it compatible with high-end equipment and SMPS where low leakage current and high junction temperature are required to provide reliability and stability over time.

The SMX1J is packaged in μQFN-2L.

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Errata Sheet
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Key Features

  • Peak pulse power:
  • 85 W (10/1000 μs)
  • 800 W (8/20 μs)
  • Stand off voltage 7.5 V
  • Unidirectional
  • Low leakage current:
  • 1 μA at 25 °C
  • 2 μA at 85 °C
  • Operating Tj max: 150 °C
  • High power capability at Tj max: 78 W
  • Complies with the following standards
  • IEC 61000-4-2 level 4:15 kV (air discharge)8 kV (contact discharge)
  • MIL STD 883G - Method 3015-7 Class 3B:25 kV HBM (human body model)

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS6454: Transil™
3.1 188 KB

Application Notes

Description Version Size
AN4160: TVS devices for power line communication applications
2.0 418 KB

Technical Notes & Articles

Description Version Size
TN1173: Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches
3.1 333 KB

Publications and Collaterals


Description Version Size
Full EOS protection at working temperatures with new TVS generation
1.0.0 963 KB
SMA6J ans SMM4F high-temperature Transil series
1.0 323 KB

Sample & Buy

Part Number Marketing StatusStand-off voltage (nom) DirectionalityPackagePacking TypeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
SMX1J7.5A-TRActive7.5Uni-DirectionaluQFN-2LTape And Reel-.147Distributor reported inventory date: 2015-11-25
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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