Operation Theory

Posted in MLA Series

When overvoltage exceeds the breakdown voltage of MLV, the resistance value of MLV will rapidly decrease (from 109 Ω to 3~5 Ω), to lead the current to the ground through the MLV and the current away from the systems. The overvoltage will be clamping immediately so that the system circuit will be protected from damaging by transient events.

MLA Specification

  • Part Number Working Voltage Breakdown Voltage Clamping Voltage Surge Voltage (8/20us)
    Symbol DC V(1mA) V A
    SFI0805ML240A-LF 18 24 <39 150A
  • Part Number Working Voltage Breakdown Voltage Clamping Voltage Surge Voltage (8/20us)
    Symbol DC V(1mA) V A
    SFI1206ML180A-LF
    SFI1206ML240A-LF
    SFI1206ML270A-LF
    SFI1206ML330A-LF
    SFI1206ML390A-LF
    SFI1206ML470A-LF
    SFI1206ML560A-LF
    SFI1206ML680A-LF
    14
    18
    22
    26
    30
    38
    45
    56
    18
    24
    27
    33
    39
    47
    56
    68
    <30
    <39
    <44
    <54
    <65
    <77
    <90
    <120
    200A
    200A
    200A
    200A
    200A
    200A
    200A
    200A
  • Part Number Working Voltage Breakdown Voltage Clamping Voltage Surge Voltage (8/20us)
    Symbol DC V(1mA) V A
    SFI1210ML150A-LF
    SFI1210ML180A-LF
    SFI1210ML240A-LF
    SFI1210ML270A-LF
    SFI1210ML330A-LF
    SFI1210ML390A-LF
    SFI1210ML470A-LF
    SFI1210ML560A-LF
    11
    14
    18
    22
    26
    30
    38
    45
    15
    18
    24
    27
    33
    39
    47
    56
    <25
    <30
    <39
    <44
    <54
    <65
    <77
    <90
    400A
    400A
    400A
    400A
    400A
    400A
    400A
    400A
  • Part Number Working Voltage Breakdown Voltage Clamping Voltage Surge Voltage (8/20us)
    Symbol DC V(1mA) V A
    SFI1812ML101A-LF 85 100 <165 800A
  • Part Number Working Voltage Breakdown Voltage Clamping Voltage Surge Voltage (8/20us)
    Symbol DC V(1mA) V A
    SFI2220ML180A-LF
    SFI2220ML240A-LF
    SFI2220ML270A-LF
    SFI2220ML330A-LF
    SFI2220ML390A-LF
    SFI2220ML470A-LF
    SFI2220ML560A-LF
    14
    18
    22
    26
    30
    38
    45
    18
    24
    27
    33
    39
    47
    56
    <30
    <39
    <44
    <54
    <65
    <77
    <90
    1200A
    1200A
    1200A
    1200A
    1200A
    1200A
    1200A
  • 0805
  • 1206
  • 1210
  • 1812
  • 2220