

CG4 Series high voltage miniature SMT gas discharge tubes provide high levels of protection against fast rising transients caused by lightning disturbances. These GDTs are high voltage (800V - 3000V) devices designed for over-voltage protection for high isolation applications.
- High DC breakdown voltage 800V to 3000 V
- Surface mount form factor with two squared terminals
- Medium surge capability 3kA (8/20µs)
- Miniature footprint
- Lead-free and RoHS compliant
- UL Recognized
CG4 Parts
Filters
Showing 1 to 8 of 8 Total Results
Part Number | Actions | VMIN Spark (V) | VNom Spark (V) | VMAX Spark (V) | Max Impulse Sparkover Voltage @ 100V/µs (V) | Capacitance (Co) (pF) | Impulse Discharge Current @8/20µs (kA) | Electrodes | Failsafe |
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Part Number | Actions | VMIN Spark (V) | VNom Spark (V) | VMAX Spark (V) | Max Impulse Sparkover Voltage @ 100V/µs (V) | Capacitance (Co) (pF) | Impulse Discharge Current @8/20µs (kA) | Electrodes | Failsafe | |
---|---|---|---|---|---|---|---|---|---|---|
960 | 800 | 640 | 800 | 0.8 | 3 | 2 | No | |||
1200 | 1000 | 800 | 1000 | 0.8 | 3 | 2 | No | |||
1440 | 1200 | 960 | 1200 | 0.8 | 3 | 2 | No | |||
2160 | 1800 | 1440 | 1800 | 0.8 | 3 | 2 | No | |||
2400 | 2000 | 1600 | 2000 | 0.8 | 3 | 2 | No | |||
3000 | 2500 | 2000 | 2500 | 0.8 | 3 | 2 | No | |||
3240 | 2700 | 2160 | 2700 | 0.8 | 3 | 2 | No | |||
3600 | 3000 | 2400 | 3000 | 0.8 | 3 | 2 | No |
CG4 Applications
- Air conditioning
- Variable frequency drives (VFDs) / inverters
- High voltage power supply
- Medical electronics such as X-ray machines and NMR equipment
- Set-top boxes
- High voltage test equipment
Series: CG4 Resources

Gas Discharge Tubes Catalog
GDTs dissipate voltage transients through a contained plasma gas. They have high insulation resistance plus low capacitance and leakage to ensure

Circuit Protection Selection Guide
Consult this guide to learn about circuit protection considerations and the solutions Littelfuse offers. Tables help match products with applications.