STK-HO/B

The STK-HO/B series is based on TMR (Tunneling-Magnetoresistance) technology and open-loop design. It is suitable for DC, AC, pulsed and any kind of irregular current measurement under the isolated conditions. The nominal current range of the STK-HO/B current sensor consists of 50 A, 75 A, 100 A, 130 A.

  • Product Features
  • Typical Application
Product Features
  • AC variable speed and servo motor drives

    Static converters for DC motor drives

    Battery supplied applications

    Uninterruptible Power Supplies (UPS)

    Switched Mode Power Supplies (SMPS)

    Combiner box

    Solar inverter on DC side of the inverter (MPPT)

    Plasma cutter, welding

    Charging station.

  • Limit Parameters
  • Electrical Parameters(Ta=25℃)
  • Physical Parameters
  • Parameter

    Symbol

    Unit

    Min

    Typ

    Max

    Comment

    Primary nominal current rms

    I_pn

    A

     

    30

     

    STK-30HO/B

     

     

     

     

    50

     

    STK-50HO/B

     

     

     

     

    75

     

    STK-75HO/B

     

     

     

     

    100

     

    STK-100HO/B

     

     

     

     

    130

     

    STK-130HO/B

    Primary current measuring range

    I_pm

    A

    -75

     

    75

    STK-30HO/B

     

     

     

    -125

     

    125

    STK-50HO/B

     

     

     

    −187.5

     

    187.5

    STK-75HO/B

     

     

     

    -250

     

    250

    STK-100HO/B

     

     

     

    -325

     

    325

    STK-130HO/B

    Supply voltage

    Vcc

    V

    4.75

    5

    5.25

     

    Current consumption

    Icc

    mA

    6

    7

    8

     

    Reference voltage

    Vref

    V

    2.48

    2.5

    2.52

    Output function

    Rated output voltage

    V_FS

    V

     

    0.8

     

    (Vout - Vref )@ I_pn

    Internal output resistance

    R_out

    Ω

     

    70

     

    Output

    Quiescent voltage

    Voff

    V

    2.48

    2.5

    2.52

    Vout @ 0 A

    Electrical offset voltage

    Voe

    mV

    -10

     

    10

    (Vout – Vref) @ 0 A

    Temperature drift of Voe

    Voe_TRange

    %V_FS

    -1.5

     

    1.5

    -40 ~ 105

    Theoretical gain

    G_th

    mV/A

     

    26.666

     

    STK-30HO/B

     

     

     

     

    16

     

    STK-50HO/B

     

     

     

     

    10.666

     

    STK-75HO/B

     

     

     

     

    8

     

    STK-100HO/B

     

     

     

     

    6.154

     

    STK-130HO/B

    Rated linearity error

    Non-L_pn

    %I_pn

    -0.5

     

    0.5

    ±I_pn

    Linearity error @ I_pm

    Non-L_pm

    %I_pm

    -1

     

    1

    ±I_pm

    Step response time

    t_res

    µs

     

    0.2

     

    @ 90% of I_pn

    Frequency bandwidth (-3dB)

    BW

    kHz

     

    1000

     

    No RC circuit

    Output voltage noise

    DC ~ 10 kHz

    DC ~ 100 kHz

    Vnoise

    mVpp

     

     

    15

    25

     

     

    Accuracy @ 25

    X

    % of I_pn

    -1

     

    1

    @ 25

    Accuracy @ -40 ~ 105

    X_TRange

    % of I_pn

    -3

     

    3

    -40 ~ 105

  • Parameter

    Symbol

    Unit

    Min

    Typ

    Max

    Comment

    Primary nominal current rms

    I_pn

    A

     

    30

     

    STK-30HO/B

     

     

     

     

    50

     

    STK-50HO/B

     

     

     

     

    75

     

    STK-75HO/B

     

     

     

     

    100

     

    STK-100HO/B

     

     

     

     

    130

     

    STK-130HO/B

    Primary current measuring range

    I_pm

    A

    -75

     

    75

    STK-30HO/B

     

     

     

    -125

     

    125

    STK-50HO/B

     

     

     

    −187.5

     

    187.5

    STK-75HO/B

     

     

     

    -250

     

    250

    STK-100HO/B

     

     

     

    -325

     

    325

    STK-130HO/B

    Supply voltage

    Vcc

    V

    4.75

    5

    5.25

     

    Current consumption

    Icc

    mA

    6

    7

    8

     

    Reference voltage

    Vref

    V

    2.48

    2.5

    2.52

    Output function

    Rated output voltage

    V_FS

    V

     

    0.8

     

    (Vout - Vref )@ I_pn

    Internal output resistance

    R_out

    Ω

     

    70

     

    Output

    Quiescent voltage

    Voff

    V

    2.48

    2.5

    2.52

    Vout @ 0 A

    Electrical offset voltage

    Voe

    mV

    -10

     

    10

    (Vout – Vref) @ 0 A

    Temperature drift of Voe

    Voe_TRange

    %V_FS

    -1.5

     

    1.5

    -40 ~ 105

    Theoretical gain

    G_th

    mV/A

     

    26.666

     

    STK-30HO/B

     

     

     

     

    16

     

    STK-50HO/B

     

     

     

     

    10.666

     

    STK-75HO/B

     

     

     

     

    8

     

    STK-100HO/B

     

     

     

     

    6.154

     

    STK-130HO/B

    Rated linearity error

    Non-L_pn

    %I_pn

    -0.5

     

    0.5

    ±I_pn

    Linearity error @ I_pm

    Non-L_pm

    %I_pm

    -1

     

    1

    ±I_pm

    Step response time

    t_res

    µs

     

    0.2

     

    @ 90% of I_pn

    Frequency bandwidth (-3dB)

    BW

    kHz

     

    1000

     

    No RC circuit

    Output voltage noise

    DC ~ 10 kHz

    DC ~ 100 kHz

    Vnoise

    mVpp

     

     

    15

    25

     

     

    Accuracy @ 25

    X

    % of I_pn

    -1

     

    1

    @ 25

    Accuracy @ -40 ~ 105

    X_TRange

    % of I_pn

    -3

     

    3

    -40 ~ 105

  • Parameter

    Symbol

    Unit

    Min

    Typ

    Max

    Comment

    Primary nominal current rms

    I_pn

    A

     

    30

     

    STK-30HO/B

     

     

     

     

    50

     

    STK-50HO/B

     

     

     

     

    75

     

    STK-75HO/B

     

     

     

     

    100

     

    STK-100HO/B

     

     

     

     

    130

     

    STK-130HO/B

    Primary current measuring range

    I_pm

    A

    -75

     

    75

    STK-30HO/B

     

     

     

    -125

     

    125

    STK-50HO/B

     

     

     

    −187.5

     

    187.5

    STK-75HO/B

     

     

     

    -250

     

    250

    STK-100HO/B

     

     

     

    -325

     

    325

    STK-130HO/B

    Supply voltage

    Vcc

    V

    4.75

    5

    5.25

     

    Current consumption

    Icc

    mA

    6

    7

    8

     

    Reference voltage

    Vref

    V

    2.48

    2.5

    2.52

    Output function

    Rated output voltage

    V_FS

    V

     

    0.8

     

    (Vout - Vref )@ I_pn

    Internal output resistance

    R_out

    Ω

     

    70

     

    Output

    Quiescent voltage

    Voff

    V

    2.48

    2.5

    2.52

    Vout @ 0 A

    Electrical offset voltage

    Voe

    mV

    -10

     

    10

    (Vout – Vref) @ 0 A

    Temperature drift of Voe

    Voe_TRange

    %V_FS

    -1.5

     

    1.5

    -40 ~ 105

    Theoretical gain

    G_th

    mV/A

     

    26.666

     

    STK-30HO/B

     

     

     

     

    16

     

    STK-50HO/B

     

     

     

     

    10.666

     

    STK-75HO/B

     

     

     

     

    8

     

    STK-100HO/B

     

     

     

     

    6.154

     

    STK-130HO/B

    Rated linearity error

    Non-L_pn

    %I_pn

    -0.5

     

    0.5

    ±I_pn

    Linearity error @ I_pm

    Non-L_pm

    %I_pm

    -1

     

    1

    ±I_pm

    Step response time

    t_res

    µs

     

    0.2

     

    @ 90% of I_pn

    Frequency bandwidth (-3dB)

    BW

    kHz

     

    1000

     

    No RC circuit

    Output voltage noise

    DC ~ 10 kHz

    DC ~ 100 kHz

    Vnoise

    mVpp

     

     

    15

    25

     

     

    Accuracy @ 25

    X

    % of I_pn

    -1

     

    1

    @ 25

    Accuracy @ -40 ~ 105

    X_TRange

    % of I_pn

    -3

     

    3

    -40 ~ 105

  • Mechanical Dimension Drawing(mm)