SH230 - SH Series

Series: SH
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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 SH Series Gas Discharge Tube (GDT) is designed to  provide high levels of protection against fast-rising transients caused by lightning disturbances. It is offered in a squared surface mount package (5.0×5.0×4.2mm) with a 5kA surge capability and a 0.7pF off-state capacitance value.



  • 5kA surge capability in minimal footprint (5.0×5.0×4.2mm)
  • Ultra-low capacitance (< 0.7 pF) that does not vary as the signal voltage varies
  • Surface mount form factor with squared body and terminals


  • G.Fast, xDSL, 10GbE, and 10/100/1000 BaseT Ethernet port protection
  • Satellite, CATV equipment and set top boxes
  • Coaxial cable
  • Ethernet, RS-485, RS-232, etc. interfaces
  • Broadband equipment 
  • General telecom equipment
  • Industrial automation
  • Power Inverter/Variable Frequency Drivers (VFDs) 

Video: (For Chinese subtitle version CLICK HERE)

SH230 ECAD Models

pdf icon Gas Discharge Tubes SG Datasheet

Littelfuse SG series GDT offers high surge ratings in a miniature package...

pdf icon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdf icon 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...

pdf icon Gas Discharge Tubes Catalog

GDTs dissipate voltage transients through a contained plasma gas. They have high insulation resistance plus low capacitance and leakage to ensure minimal effect on normal operation of equipment...

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
SH230 GP ST&ARD S.A. 230V 5.0*4.2mm SMT RoHS No 02/20/2019 PbFree No 02/20/2019 No
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