CG7250
Gas Discharge TubeThe CG7250 is a gas discharge tube from Littelfuse Inc.. View the full CG7250 datasheet below including key specifications, electrical characteristics.
Manufacturer
Littelfuse Inc.
Category
Gas Discharge Tube
Key Specifications
| Parameter | Value |
|---|---|
| Fail Short | No |
| Impulse Discharge Current (8/20µs) | 1000A (1kA) |
| Mounting Type | Surface Mount |
| Number of Poles | 2 |
| Package / Case | 2-SMD Cylinder Square End |
| Packaging | MouseReel |
| Standard Pack Qty | 2500 |
| Voltage - DC Spark Over (Nom) | 90 V |
Overview
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)
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
- 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
Electrical Characteristics
| Device Specifications (at 25°C) | Device Specifications (at 25°C) | Device Specifications (at 25°C) | Device Specifications (at 25°C) | Device Specifications (at 25°C) | Device Specifications (at 25°C) | Device Specifications (at 25°C) | Device Specifications (at 25°C) | Life Ratings | Life Ratings | Life Ratings | Life Ratings | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Part Number | DC Breakdown in Volts (@100V/s) | DC Breakdown in Volts (@100V/s) | DC Breakdown in Volts (@100V/s) | Impulse Break- down in Volts (@100V/μs) | Impulse Break- down In Volts (@1kV/μs) | Insulation Resistance | Capaci- tance (@1MHz) | Max Impulse Discharge Current (8/20μs) | Max Impulse Discharge Current (10/700μs) | AC Dischage Current (9 cycle @50Hz) | DC Holdover Voltage (<150ms) | Impulse Life (8/20μs) (100A) |
| Part Number | MIN | TYP | MAX | MAX | MIN | MAX | MIN | MIN | ||||
| CG775 | 60 | 75 | 90 | 600 | 700 | 1GΩ@50V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 52V | 300 Shots | |
| CG790 | 72 | 90 | 108 | 600 | 700 | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 52V | 300 Shots | ||
| CG7120 | 96 | 120 | 144 | 600 | 700 | 1GΩ@100V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 80V | 300 Shots | |
| CG7150 | 120 | 150 | 180 | 600 | 700 | 1GΩ@100V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 80V | 300 Shots | |
| CG7200 | 160 | 200 | 240 | 600 | 700 | 1GΩ@100V | 0.3pf | 1 | 10 Shots (@ 100A/4kV) 2 | 1A | 135V | 300 Shots |
| CG7230 | 186 | 230 | 276 | 600 | 700 | 1GΩ@100V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 135V | 300 Shots | |
| CG7250 | 200 | 250 | 300 | 600 | 700 | 1GΩ@100V | 0.3pf | at 2kA | 10 Shots (@ 100A/4kV) 2 | 135V | 300 Shots | |
| CG7350 | 280 | 350 | 420 | 750 | 900 | 1GΩ@100V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 135V | 300 Shots | |
| CG7400 | 360 | 400 | 480 | 850 | 1000 | 1GΩ@100V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 135V | 300 Shots | |
| CG7470 | 376 | 470 | 564 | 900 | 1100 | 1GΩ@250V | 0.3pf | (@1kA) 1 Shot | 10 Shots (@ 100A/4kV) 2 | 135V | 300 Shots |
Related Variants
The following components are covered by the same datasheet.
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