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.

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)



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DS6454 DS6454: Transil™ 3.1 188 KB
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Technical Notes & Articles
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Description Version Size
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Design Tools
Smart selectors


型号 Stand-off voltage (V) (nom) Directionality Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
SMX1J7.5A-TR 7.5 Uni-Directional uQFN-2L Tape And Reel Active 0.147 1000 NEC EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY

(*) 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


型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SMX1J7.5A-TR ActiveuQFN-2LIndustrialEcopack2

(**) 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.