3-electrode GDT
BM 230/20
BM 230/20
Part Number: 9297057
  • The smallest 3-electrode GDT
  • No radioactive
  • Used in connector blocks and adapted holders
  • SMD compatible
  • Available with fail safe

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.

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Nominal discharge current
10 x 8/20µs impulses following ITU-T K12 rec.
10 kA
Total Maximal discharge current
max. total withstand @ 8/20 µs
25 kA
Max. shunt capacitance <0.5 pF
AC discharge current (50Hz)
Insulation resistance
≥10 GOhms
Impulse sparkover voltage (1kV/µs) <750 V
DC sparkover voltage (100V/s)
184-276 V
Holdover voltage
R = 300 ohms in serie R = 150 ohms; 100nF en parrallel)
>80 V
Technology Gas discharge tube
See diagram
RohS compliance
Standards compliance
UIT-T-K12 rec. / IEC 61643-311