CG7 Series - Two Terminal Mini Gas Plasma Arresters

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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 CG7 series GDT is a miniature surface mount device with a 1kA 8/20μS surge rating. Its low insertion loss and thus low off-state capacitance makes it compatible with high bandwidth applications up to the GHz RF range. This GDT’s crow barring characteristic protects sensitive ICs from surges as defined in ITU K.20/21/45 Basic and Enhanced Recommendations, GR-1089-CORE first level lightning Port Type 1 and 3, and IEC 61000- 4-5 2nd edition. It is hermetically sealed using non-radioactive materials and is thus environmentally safe. Its 2.8mm diameter size makes it the world’s smallest two-electrode single chamber GDT.


  • Up to 1kA Surge Capability in Minimal Footprint
  • Ultra-low capacitance (< 0.3 pF)
  • Surface mount form factor


  • G.Fast Modems
  • Cable Modems
  • MoCA (Multimedia over Coax Alliance)
  • EMTA (Embedded Multimedia Terminal Adapter)
  • RF Connectors
  • xDSL
  • RJ 45 Connectors

Access specifications, certifications, check availability and order parts below

Catalog #VMIN Spark
VNom Spark
VMAX Spark
@ 100V/μs
Capacitance (Co) (pF)Impulse Discharge Current @8/20μs (kA)DC
CG7120MS961201441200.51802NoSurface MountCheckOrder
CG7150MS1201501801500.51802NoSurface MountCheckOrder
CG7200MS1602002402000.511352NoSurface MountCheckOrder
CG7230MS1842302762300.511352NoSurface MountCheckOrder
CG7250MS2002503002500.511352NoSurface MountCheckOrder
CG7350MS2803504203500.511352NoSurface MountCheckOrder
CG7400MS3204004804000.511352NoSurface MountCheckOrder
CG7470MS3764705644700.511352NoSurface MountCheckOrder
CG775MS607590750.51502NoSurface MountCheckOrder
CG790MS7290108900.51502NoSurface MountCheckOrder

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