CG7120

Part: Littelfuse CG7 Series

Type: Gas Discharge Tube (GDT)

Description: The Littelfuse CG7 series GDT is a miniature surface mount device with a 1kA 8/20μS surge rating, low insertion loss, and low off-state capacitance, making it compatible with high bandwidth applications up to the GHz RF range.

Operating Conditions:

• Supply voltage: 75V–470V (DC Breakdown Voltage Range)
• Operating temperature: -40 to +90°C
• Capacitance: <0.3pF (@1MHz)

Absolute Maximum Ratings:

• Max impulse discharge current (8/20μs): 1kA (1 Shot, for most variants; 2kA for CG7250)
• Max storage and operational temperature: +90°C

Key Specs:

• DC Breakdown Voltage (CG775): 60V (min) to 90V (max) @100V/s
• Impulse Breakdown Voltage (CG775): 600V (max) @100V/μs, 700V (max) @1kV/μs
• Insulation Resistance (CG775): 1GΩ (min) @50V
• Capacitance: 0.3pF (max) @1MHz
• DC Holdover Voltage (CG775): 52V (<150ms)
• Impulse Life (8/20μs, 100A): 300 Shots (min)
• Typical Insertion Loss @1.0GHz: 0.02dB

Features:

• RoHS compliant and Lead-free
• Excellent Surge Withstanding Capability
• Excellent response to fast rising transients.
• Ultra Low Insertion Loss and low off-state capacitance for GHz bandwidth compatibility
• Ultra small devices offered in SMD package

Applications:

• Set top box
• Cable Modem
• Embedded Multimedia Terminal Adapter (EMTA)
• RF Connector
• Multimedia over Coax Alliance (MoCA)
• Base Station RF antenna transmitter
• G.Fast 106MHz and 212 MHz bandplans compatible
• CATV/Broadband equipment
• Data lines and Ethernet (up to 10GbE)
• Telecom line protection
• Broadband equipment
• xDSL equipment, including ADSL2, ADSL, VDSL, VDSL2 30a bandplan compatible
• IAD (Integrated Access Device)
• Aerospace and Automotive

Package:

• SMD (2.8mm diameter)

• RoHS compliant and Lead-free
• Excellent Surge Withstanding Capability
• Excellent response to fast rising transients.
• Ultra Low Insertion Loss and low off-state capacitance for GHz bandwidth compatibility
• Ultra small devices offered in SMD package

• Set top box
• Cable Modem
• Embedded Multimedia Terminal Adapter (EMTA)
• RF Connector
• Multimedia over Coax Alliance (MoCA)
• Base Station RF antenna transmitter
• G.Fast 106MHz and 212 MHz bandplans compatible
• CATV/Broadband equipment
• 1kA 8/20μS surge capability pulse as defined by IEC 610004-5 2 nd edition
• Ultra Low capacitance (<0.3pF)
• Voltage Range 75V to 470V
• UL recognized
• Data lines and Ethernet (up to 10GbE)
• Telecom line protection
• Broadband equipment
• xDSL equipment, including ADSL2, ADSL, VDSL, VDSL2 30a bandplan compatible
• IAD (Integrated Access Device)
• Aerospace and Automotive