Low Resistance Metal Low Resistance Metal Low Resi stance ... ?· Low Resistance Metal Element Resistors…

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  • Low Resistance MetalElement ResistorsLOB Series

    Ultra low resistance values (0.005 to 0.1) Available in 1, 3 and 5 rated packages Tolerances from 1% to 5% Inherently (.02H at 0.5MHz) Low temperature of resistance High stability over life

    * Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings while not exceeding the maximum elementtemperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding objects will affect this transfer, this must be takeninto account when selecting a resistor.

    Low Resistance MetalElement Resistor s

    LOB Serie s

    Ultra low resistance values(0.005 to 0.1)

    Available in 1, 3 and 5 watt rated packages Tolerances from 1% to 5% Inherently non-inductive (.02H at 0.5MHz) Low temperature coefficient of resistance High stability over life

    Dimensions (mm)

    Type L max. D max. f min. d nom. C

    LOB-1 9.90.3 3.60.2 38.13.2 0.8130.05 33.27

    LOB-3 14.220.25 5.330.25 34.933.18 0.810.05 33.27

    LOB-5 23.370.25 8.380.25 31.753.18 1.020.05 42.42

    General NoteWelwyn Components reserves the right to make changes in product specification without notice or liability.All information is subject to Welwyns own data and is considered accurate at time of going to print.

    Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UKTelephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com

    LOB-1 LOB-3 LOB-5

    Continuous power dissipation at 25C in free air watts 1 3 5

    52515sttawsdnoces5rofrewopdaolrevO

    stlovegatlovgnikrowmumixaM 1xR 3xR 5xR

    -55 to 175 -55 to 175 -55 to 175COperating temperature

    Electrical Data

    Physical Data

    Issue B 03.02

    A subsidiary ofTT electronics plc

    Welwyn Components

    104

    L

    C

    Df

    d

    contact point contact point

    DescriptionLOB Series power precision metal element resistors featureresistance values down to 0.005 with virtually noinductance. Available in 1, 3 and 5 watt rated axial leadedpackages, these resistors are compatible with automaticinsertion equipment.

    Applications Switchmode and linear power supplies. Automotive current-sensing circuits. Instrumentation.

    ConstructionLOB Series resistors feature tinned copper leads weldeddirectly to a low temperature coefficient resistance element ina highly automated proprietary process. The leaded resistorelements are then encapsulated in a moulding compound.

    Resistors

    All Pb-free parts comply with EU 2011/65/EU (RoHS2)

    Low Resistance MetalElement ResistorsLOB Series

    www.bitechnologies.com www.irctt.com www.welwyn-tt.com

    General NoteTT electronics reserves the right to make changes in product specification without notice or liability.All information is subject to TT electronics own data and is considered accurate at time of going to print.

    TT electronics plc11. 11

    Ultra low resistance values(0.005 to 0.1 )

    Available in 1, 3 and 5 watt rated packages Tolerances from 1% to 5% Inherently non-inductive ( .02H at 0.5MHz) Low temperature coefficient of resistance High stability over life

    *Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings w hile not exceeding the maximum elementtemperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding ob jects will a this transfer, this must be takeninto account when selecting a resistor.

    Low Resi stance MetalE lement Resi stors

    LOB S eries

    Ultralowresistancevalues(0.005 to0.1)

    Availablein 1,3 and5 wattratedpackages Tolerancesfrom1%to5% Inherentlynon-inductive( .02Hat0.5MHz) Lowtemperature coe ofresistance Highstabilityoverlife

    Dimensions(mm)

    Type L max. D max. f min. d nom. C

    LOB-1 9.90.3 3.60.2 38.13.2 0.8130.05 33.27

    LOB-3 14.220.25 5.330.25 34.933.18 0.810.05 33.27

    LOB-5 23.370.25 8.380.25 31.753.18 1.020.05 42.42

    GeneralNoteWelwyn Components reserves the right to make changes in product without notice or liability.All information is subject to Welwyns own data and is considered accurate at time of going to print.

    WelwynComponentsLimited Bedlington, Northumberland NE227AA,UKTelephone: +44 (0) 1670822181 Facsimile: +44 (0) 1670829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com

    LOB-1 LOB-3 LOB-5

    Continuous power dissipation at 25Cin free air watts 1 3 5

    Overload power for 5 seconds watts 5 15 25

    Maximum working voltage volts 1xR 3xR 5xR

    Maximum storage temperature C 175 175 175

    E lectrical Data

    Phys ical Data

    Issue B 03.02

    A subsidiary ofTT electronics plc

    Welwyn Components

    104

    L

    C

    Df

    d

    contact point contact point

    DescriptionLOB Series power precision metal element resistors featureresistance values down to 0.005 with virtually noinductance. Available in 1,3 and 5 watt rated axial leadedpackages, these resistors are compatible with automaticinsertion equipment.

    Applications Switchmode and linear power supplies. Automotive current-sensing circuits. Instrumentation.

    ConstructionLOB Series resistors feature tinned copper leads weldeddirectly to a low temperature coe resistance element ina highly automated proprietary process. The leaded resistorelements are then encapsulated in a moulding compound.

    *Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings while not exceeding the maximum elementtemperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding objects will a this transfer, this must be takeninto account when selecting a resistor.

    Low R esistance MetalElement R esistors

    LOB S eries

    Ultralowresistancevalues(0.005 to0.1)

    Availablein 1,3 and5 wattratedpackages Tolerancesfrom1%to5% Inherentlynon-inductive( .02Hat0.5MHz) Lowtemperature coe ofresistance Highstabilityoverlife

    Dimensions (mm)

    Type

    LOB-1 9.90.3

    L D f d C nom

    33.270.8130.0538.13.23.60.2

    LOB-3 14.220.25 5.330.25 34.933.18 33.270.810.05

    LOB-5 23.370.25 42.421.020.0531.753.188.380.25

    GeneralNoteWelwyn Components reserves the right to make changes in product without notice or liability.All information is subject to Welwyns own data and is considered accurate at time of going to print.

    WelwynComponentsLimited Bedlington, Northumberland NE227AA,UKTelephone: +44 (0) 1670822181 Facsimile: +44 (0) 1670829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com

    LOB-1 LOB-3 LOB-5

    Continuous power dissipation at 25Cin free air watts 1 3 5

    Overload power for 5 seconds watts 5 15 25

    Maximum working voltage volts 1xR 3xR 5xR

    C

    E lectrical Data

    P hysical Data

    Issue B 03.02

    A subsidiary ofTT electronics plc

    Welwyn Components

    104

    L

    C

    Df

    d

    contact point contact point

    DescriptionLOB Series power precision metal element resistors featureresistance values down to 0.005 with virtually noinductance. Available in 1,3 and 5 watt rated axial leadedpackages, these resistors are compatible with automaticinsertion equipment.

    Applications Switchmode and linear power supplies. Automotive current-sensing circuits. Instrumentation.

    ConstructionLOB Series resistors feature tinned copper leads weldeddirectly to a low temperature coe resistance element ina highly automated proprietary process. The leaded resistorelements are then encapsulated in a moulding compound.

    -55 to 175Operating temperature

    08.16

    General Note

    All information is subject to TT Electronics own data and is considered accurate at time of going to print.

    TT Electronics plc

    www.ttelectronicsresistors.com

    BI Technologies IRC Welwyn

  • Low Resistance MetalElement ResistorsLOB Series

    Low Resistance MetalElement ResistorsLOB Series

    www.bitechnologies.com www.irctt.com www.welwyn-tt.com

    General NoteTT electronics reserves the right to make changes in product specification without notice or liability.

    All information is subject to TT electronics own data and is considered accurate at time of going to print.

    TT electronics plc11. 11

    0 25 50 75 100

    400

    300

    200

    100

    0

    Resistance (ohms x 10-3)

    Tem

    per

    atu

    re C

    oef

    fici

    ent

    of

    resi

    stan

    ce (

    pp

    m/

    C)

    Low Resistance MetalElement ResistorsLOB Series

    Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UKTelephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com

    105

    Issue B 03.02

    Welwyn Components

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    01>203 dohteMecnatsiser noitalusnI 11 ohms

    0 25 50 75 100 125 150 175

    100

    90

    80

    70

    60

    50

    40

    30

    20

    10

    0

    Ambient Temp (C)

    Rat

    ed P

    ow

    er (

    %)

    Power derating percentage vsFree air ambient temperature

    Temperature coefficient of resistance vsResistance value

    *0.0005 ohm allowance for test/contact error.

    PackagingResistors are supplied taped and reeled.Bulk packaging available.

    Ordering Proced