2-electrode GDT

BA CMS(T&R) 350/20
Part Number: 929811501
BA CMS(T&R) 350/20
  • The smallest 2-electrode GDT
  • No radioactive
  • Surface Mounting Device
  • Tape & Reel Packaging

BA are bipolar 'ceramic' technology gas discharge tube intended for the protection of transmission access to telecommunications or IT equipment, against transient overvoltages due in particular to lightning. The reduced size of the BA allows its installation in volumes hitherto inaccessible to gas spark gaps. Versions for surface mounting (ref. BA CMS) or on circuit (output by wires: ref. BAS) are also available. The products are also available in 'Tape & Reel' packaging.


DC sparkover voltage (100V/s) 280-420 V
DC spark voltage tolerance (100V/s) +/- 20%
Maximum impulse sparkover voltage (1kV/µs) <900 V
Nominal discharge current In 10 kA
Total Maximum discharge current Imax Total 25 kA
Impulse discharge current 2 kA
Max. capacitance C <0.3 pF
Insulation resistance IR ≥10 GOhms
Arc Voltage ≤ 25 V
Glow voltage ≤ 100 V
AC discharge current (50Hz) 10 A
DC Holdover voltage >80 V
Technology Gas discharge tube
GDT configuration 2-electrode
Mounting Surface Mounting Device
Operating and storage temperature -40°C / +90°C
Tape&Reel Version Standard version
Dimensions See diagram
Standards compliance ITU-T K12 rec.
Certification UL497B
RohS compliance Yes