3-electrode GDT

BMSQ CMS FL (T&R) 230/20
Part Number: 929805701
BMSQ CMS FL (T&R)  230/20
  • The smallest 3-electrode GDT
  • No radioactive
  • With fail-safe
  • "Square SMD" (anti-rolling)
  • Surface mounting device
  • UL certified
  • ITU-K12 compliant

CITEL BM surge arresters are 3-electrode gas discharge tubes designed in ceramic technology and created to protect telecommunication or computer equipment, The reduced size of the BM series enables the implementation in limited space applications (small connector blocks...), SMD mounting (BM CMS type) or PCB mounting (with lead termination : BMS). BM could be provide with external fail-safe mechanism (BMC type) and is available in several DC sparkover voltages.

DC sparkover voltage (100V/s)
184-276 V
DC spark voltage tolerance
+/- 20%
Maximum impulse sparkover voltage (1kV/µs)
≤ 680 V
Nominal discharge current
10 x 8/20µs impulses
In 10 kA
Total Maximum discharge current
max. total withstand @ 8/20 µs
Imax Total 25 kA
Impulse discharge current
10/350µs - 1 time
2 kA
Max. capacitance
C <0.5 pF
Insulation resistance
IR ≥10 GOhms
Glow-to-arc transition current
0.5 A
Glow voltage
≤ 100 V
AC discharge current (50Hz)
10 A
DC Holdover voltage
R = 300 ohms in serie R = 150 ohms; 100nF en parrallel
>80 V
Gas discharge tube
Surface Mounting Device
Operating and storage temperature
-40°C / +90°C
Failsafe mode
Tape&Reel Version
Standard version
See diagram
Standards compliance
ITU-T K12 rec.
UL Recognized / ROHS
RohS compliance