SZ1SMA30AT3G - SZ1SMA Series

Series: SZ1SMA
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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.

The SZ1SMA series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. The SZ1SMA series is supplied in cost-effective, highly reliable DO-214AC package and it is ideal for use in automotive electronic applications.

Features & Benefits:

  • Zener Transient Overvoltage Suppressors
  • Working Peak Reverse Voltage Range −5V to 170V for uni-directional and 10 V to 78 V for bi-directional
  • Standard Zener Breakdown Voltage Range −11.1 V to 95.83 V for bi-directional, 6.4 V to 209 V for uni-directional
  • Peak Power − 400 W @ 1 ms
  • ESD protection of data lines in accordance with IEC 61000-4-2 30kV(Air), 30kV (Contact)
  • ESD Rating of Class 3 (> 16 kV) per Human Body Model
  • Response Time is Typically < 1 ns
  • Flat Handling Surface for Accurate Placement
  • Package Design for Top Slide or Bottom Circuit
  • VBR @TJ = VBR@25°C x (1+αT x (TJ - 25)) (αT: Temperature Coefficient)
  • Board Mounting
  • Low Profile Package
  • Pb-free means 2nd level interconnect is Pb-free and the terminal finish material is tin(Sn) (IPC/JEDEC J-STD-609A.01)
  • SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC− Q101 Qualified and PPAP Capable
  • Recognized to UL 497B as an Isolated Loop Circuit Protector
  • RoHS-compliant and halogin-free
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Application Spotlight


Property (Mouseover for details) Value
Reverse Standoff Voltage (VR) (Vso) 30
Watts (W) 400
Peak Pulse Current (Ipp) 10x1000 (A) 8.3
Breakdown Voltage (MIN VBR@IT ) (V) 33.3
Breakdown Voltage (VBR@IT) (V) 36.8
Ir @Vso( μA) 1
On-State Current (IT) (mA) 1
Max Clamp Voltage (Vc) (V) 48.4
Partner ECAD Models SZ1SMA30AT3G
Operating Temperature Maximum Celsius 150
Polarity Unipolar
Package DO-214AC

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
SZ1SMA30AT3G Zen TVS 400W 30V UNI DO-214AC TR13 RoHS No 10/29/2017 PbFree No 10/29/2017 CoC_RoHS9_SZ1SMA30AT3G REACH211_Declaration_Contain-_SZ1SMA30AT3G Yes
10/29/2017		 Contains IPC_Z1SMAxxAT3G_SZ1SMAxxCAT3G__ver2
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