SG Series - Littelfuse SG Series GDT

Series: SG
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Disclaimer Notice

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 SG series GDT offers high surge ratings in a miniature package. It's designed for surface mounting on PCB with small size 4.5x3.2x2.7mm. Low insertion loss is perfectly suited to broadband equipment applications.

The capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. These devices are extremely robust and are able to divert a 1000A pulse without destruction.

  • RoHS compliant and Lead-free
  • GHz working frequency
  • Excellent stability on multiple pulse duty cycle
  • Excellent response to fast rising transients
  • Ultra Low Insertion Loss
  • 1-2KA surge capability tested with 8/20uS pulse as defined by IEC 8100-4-5
  • Ultra small devices offered in a variety of mounting lead forms
  • Non-Radioactive
  • Low capacitance (<1 pF)
  • Voltage Ranges 75V to 420V
  • UL recognized
  • Conforms to ITU-T K12, IEC 1000-4-5
  • Square Outline

  • Communication equipment
  • CATV equipment
  • Text equipment
  • Data lines
  • Power supplies
  • Telecom SLIC protection
  • Broadband equipment
  • ADSL equipment including ADSL2+
  • XDSL equipment
  • Satellite and CATV equipment
  • General telecom equipment

Access specifications, certifications, check availability and order parts below

Catalog #VMIN Spark
VNom Spark
VMAX Spark
@ 100V/μs
@ 1kV/μs
Resistance (ω)
Capacitance (Co) (pF)Impulse Discharge Current @8/20μs (kA)AC
(deg C)
SG15010515019550060011122NoSurface Mount-40øC - + 90øCCheckOrder
SG23017223028865080011122NoSurface Mount-40øC - + 90øCCheckOrder
SG30022530037570085011122NoSurface Mount-40øC - + 90øCCheckOrder
SG300Q2103003905806501112NoSurface Mount-40øC - + 90øCCheckOrder
SG35026335043775090010.8122NoSurface Mount-40øC - + 90øCCheckOrder
SG350Q26335043760070010.812NoSurface Mount-40øC - + 90øCCheckOrder
SG40030040050080095010.8122NoSurface Mount-40øC - + 90øCCheckOrder
SG420315420525800100011122NoSurface Mount-40øC - + 90øCCheckOrder
SG420Q3154205256507501112NoSurface Mount-40øC - + 90øCCheckOrder
SG450Q37045055068075011112NoSurface Mount-40øC - + 90øCCheckOrder
SG500Q400500600900105010.5122NoSurface Mount-40øC - + 90øCCheckOrder
SG600Q4506007501100120011122NoSurface Mount-40øC - + 90øCCheckOrder
SG7552759850065011222NoSurface Mount-40øC - + 90øCCheckOrder
SG90639011750060011222NoSurface Mount-40øC - + 90øCCheckOrder

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