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CG90

Gas Discharge Tube

The CG90 is a gas discharge tube from Littelfuse. View the full CG90 datasheet below including key specifications.

Official CG90 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Littelfuse

Category

Gas Discharge Tube

Package

Cylinder No Lead

Lifecycle

Active

CG90 Key Specifications

ParameterValue
Fail ShortNo
Impulse Discharge Current (8/20µs)20000A (20kA)
Mounting TypeUser Defined
Number of Poles2
Package / CaseCylinder No Lead
PackagingBulk
Standard Pack Qty1200
Voltage - DC Spark Over (Nom)90 V

CG90 Overview

Part: Littelfuse CG/CG2 Series

Type: Gas Discharge Tube (GDT)

Description: Littelfuse CG/CG2 Series GDTs provide high surge protection in a small size, featuring rugged ceramic-metal construction, low capacitance (<1.5 pF), and DC breakdown voltages ranging from 60 V to 1150 V.

Operating Conditions:

  • DC Breakdown Voltage Range: 60 V to 1150 V
  • Operating temperature: -40 to +90 °C
  • Capacitance: <1.5 pF (@1MHz)

Absolute Maximum Ratings:

  • Max DC Breakdown Voltage: 1150 V (CG21000)
  • Max Impulse Discharge Current: 4 kA (1 Application @10/350μs, for CG75, CG90, CG90 SN)
  • Max Follow On Current: 200 A (230 Volts r.m.s)
  • Max storage temperature: +90 °C

Key Specs:

  • DC Breakdown Voltage (CG75): 60 V MIN, 75 V TYP, 90 V MAX (@100V/s)
  • Impulse Breakdown Voltage (CG75): 400 V MAX (@100V/μs)
  • Insulation Resistance (CG75): 10^10 Ω MIN (at 100V)
  • Capacitance (CG75): 1.5 pF MAX (@1MHz)
  • Arc Voltage (CG75): 15 V TYP (@1Amp Min)
  • Nominal Impulse Discharge Current (most devices): 20 kA (8/20μs)
  • Nominal AC Discharge Current (CG75): 20 A (10x1sec @50-60Hz)
  • DC Holdover Voltage (CG75): 52 V TYP

Features:

  • RoHS and Lead-free compliant
  • Rugged Ceramic-Metal construction
  • Low Capacitance (<1.5pf)
  • Available in surface mount, and a variety of lead options

Applications:

  • Communication lines and equipment
  • CATV equipment
  • Test equipment
  • Data lines
  • Power supplies
  • Instrumentation circuits
  • Medical electronics
  • ADSL equipment
  • Telecom SLIC protection

Package:

  • Surface Mount
  • Core
  • Straight Lead (L Type)
  • Shaped Lead (LS Type)

CG90 Features

  • RoHS and Lead-free compliant
  • Rugged Ceramic-Metal construction
  • Low Capacitance (<1.5pf)

CG90 Applications

  • Communication lines and equipment
  • CATV equipment
  • Test equipment
  • Data lines
  • Power supplies
  • Meets REA PE-80
  • Available in surface mount, and a variety of lead options options
  • RoHS Compliant and Lead-Free
  • Instrumentation circuits
  • Medical electronics
  • ADSL equipment
  • Telecom SLIC protection

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
CG/CG2Littelfuse—
CG110LittelfuseCore
CG21000Littelfuse—
CG2145LittelfuseCore
CG2230Littelfuse—
CG2250LittelfuseCore
CG2300LittelfuseCore
CG2350Littelfuse—
CG2420LittelfuseCore
CG2470LittelfuseCore
CG2600LittelfuseCore
CG2800Littelfuse—
CG75LittelfuseCore

More datasheets

All Littelfuse datasheets (70)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Ask your AI agent about the CG90

Connect SheetsData to Claude, Cursor, Codex or any MCP client and your agent reads this datasheet for you: pinout, limits, register maps and design checks, with the numbers taken from the PDF.

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Then ask: "Can the CG90 run from my 12 V rail? Check it against the datasheet limits."

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