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250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals

    Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers
     
    Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers
    • Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers
    • Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers
    • Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers
    • Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers
    • Buy cheap 250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals from wholesalers

    250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals

    Ask Lasest Price
    Brand Name : UCHI
    Certification : ROHS,SGS,UL,VDE
    Model Number : LT250800
    Price : Negotiable
    Delivery Time : 3~5 working days
    Payment Terms : T/T,Paypal,Western Union,Money gram
    Supply Ability : 8000,000,000PCS Per Month
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    250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals

    250V 800mA Resettable Fuse SMD PPTC Devices For Computer , Peripherals


    Quick Detail:


    ■ Radial leaded devices
    ■ Fast tripping resettable PTCs
    ■ Binned and sorted narrow resistance ranges available
    ■ RoHS compliant

    Description:


    The Cooper Bussmann family of PolyTron™ resettable PPTCs is ideally suitedfor protecting applications sensitive to high ambient operating temperatures orsubject to frequent overcurrent conditions.PPTCs operate as a positive temperature coefficient device. High temperatures and excessive current will cause the device resistance to increase until it limits the unsafe current level.Upon reaching the design temperature/current limit, the PPTC will effectively“open” the circuit to provide protection from the overcurrent or elevated ambient temperature condition.Once the fault is removed or the ambient temperature cools, the PPTC will automatically “reset” and conduct safe current levels again, allowing current to flow through the circuit.PPTCs are commonly used in applications where constant uptime is required and/or in circuits not easily accessible by a user or service technician.Available in surface mount and radial packages, Cooper Bussmann resettable PPTCs help improve the safety and reliability of customer equipment worldwide.


    Applications:


    ■ Customer Premise Equipment (CPE)
    ■ Central Offi ce / Telecom Centers (CO)
    ■ Access equipment

    Specifications:


    Product Dimensions in Millimeter



    Part Number

    A

    B

    C

    D

    E

    Lead

    Max

    Max

    Max

    Min

    Typ.

    Style

    Size(Φ)

    LT250-020

    7.4

    12.7

    4.5

    7.6

    5.1

    1

    CP 0.5

    LT250-040

    5.8

    9.9

    4.5

    7.6

    5.1

    1


    LT250-055

    5.8

    9.9

    4.6

    4.7

    5.1

    1

    0.6

    LT250-080

    5.8

    9.9

    4.6

    4.7

    5.1

    1

    0.6

    LT250-080U

    4.8

    9.3

    3.8

    4.7

    5.1

    1

    0.6

    LT250-110

    6.5

    11.0

    4.6

    4.7

    5.1

    2

    0.6

    LT250-110U

    6.0

    10.0

    3.8

    4.7

    5.1

    2

    0.6

    LT250-120

    6.5

    11.0

    4.6

    4.7

    5.1

    2

    0.6

    LT250-120U

    6.0

    10.0

    3.8

    4.7

    5.1

    2

    0.6

    LT250-145

    6.5

    11.0

    4.6

    4.7

    5.1

    2

    0.6

    LT250-145U

    6.0

    10.0

    3.8

    4.7

    5.1

    2

    0.6

    LT250-180

    11.0

    13.6

    4.6

    4.7

    5.1

    2

    0.6

    LT250-180U

    10.4

    12.6

    3.8

    4.7

    5.1

    2

    0.6


    Electrical Characteristics at 25 ℃

    Part Number

    Ih(mA)

    Vmax(V)

    Imax(A)

    Rmax(Ω)

    Rmin(Ω)

    Pdtyp(W)

    LT250-060

    60

    250

    3

    45.0

    20.0

    1.0

    LT250-080

    80

    250

    3

    22.0

    10.0

    1.0

    LT250-090

    90

    250

    3

    20.0

    7.0

    1.0

    LT250-110

    110

    250

    3

    12.0

    6.0

    1.0

    LT250-120

    120

    250

    3

    10.5

    6.0

    1.0

    LT250-145

    145

    250

    3

    6.5

    3.5

    1.0

    LT250-180

    180

    250

    10

    3.0

    1.0

    1.0

    LT250-200

    200

    250

    10

    6.0

    3.0

    1.0

    LT250-400

    400

    250

    10

    3.0

    1.0

    1.0

    LT250-600

    600

    250

    10

    2.0

    0.6

    1.0

    LT250-800

    800

    250

    10

    1.0

    0.4

    1.0

    LT250-030

    30

    250

    1

    90.0

    35.0

    1.0

    LT250-040

    40

    250

    3

    65.0

    27.0

    1.0

    IH=Hold current: maximum current at which the device will not trip at 25℃ still air.

    IT=Trip current: minimum current at which the device will always trip at 25℃ still air.

    Vmax=Maximum voltage device can withstand without damage at rated current.

    Imax=Maximum fault current device can withstand without damage at rated voltage.

    Ttrip=Maximum time to trip(s) at assigned current.

    Pdtyp=Typical power dissipation: typical amount of power dissipated by the device when in state air environment.

    Rmin=Minimum device resistance at 25℃ prior to tripping.

    Rmax=Maximum device resistance at 25℃ prior to tripping.


    Thermal Derating [ Hold Current (A) at Ambient Temperature (℃)]


    Part Number

    Maximum Ambient Operating Temperature (℃)

    -40

    -20

    0

    25

    40

    50

    60

    70

    85

    LT250-080

    0.124

    0.110

    0.095

    0.080

    0.066

    0.059

    0.051

    0.044

    0.033

    LT250-080U

    0.124

    0.110

    0.095

    0.080

    0.066

    0.059

    0.051

    0.044

    0.033

    LT250-110

    0.171

    0.151

    0.131

    0.110

    0.091

    0.081

    0.071

    0.061

    0.046

    LT250-110U

    0.171

    0.151

    0.131

    0.110

    0.091

    0.081

    0.071

    0.061

    0.046

    LT250-120

    0.191

    0.170

    0.148

    0.120

    0.104

    0.093

    0.082

    0.071

    0.055

    LT250-120U

    0.191

    0.170

    0.148

    0.120

    0.104

    0.093

    0.082

    0.071

    0.055

    LT250-145

    0.225

    0.199

    0.172

    0.145

    0.119

    0.106

    0.093

    0.080

    0.060

    LT250-145U

    0.225

    0.199

    0.172

    0.145

    0.119

    0.106

    0.093

    0.080

    0.060

    LT250-180

    0.269

    0.240

    0.211

    0.180

    0.153

    0.138

    0.123

    0.109

    0.087

    LT250-180U

    0.269

    0.240

    0.211

    0.180

    0.153

    0.138

    0.123

    0.109

    0.087

    Reliability Test


    Test

    Test Conditions

    Accept/Reject Criteria

    Resistance

    In still air @ 25℃

    Rmin≤R≤Rmax

    Time to Trip

    Specified current, Vmax, 25℃

    T≤maximum Time to Trip

    Hold Current

    30min, at IH

    No trip

    Trip Cycle Life

    Vmax, Imax, 100cycles

    No arcing or burning

    Trip Endurance

    Vmax, 24hours

    No arcing or burning


    Typical Time-to-Trip Curves at 25 ℃


    A = LT250-020/080U

    B = LT250-110/0110U

    C = LT250-120/120U

    D = LT250-145/145U

    E = LT250-180/180U


    Package Information


    Bulk:

    LT250-020 ~ LT250-040……………….1000 pcs per bag

    LT250-055 ~ LT250-180………………. 500 pcs per bag


    Competitive Advantage:


    1. Factory supply directly
    2. Completed certificates such as UL,VDE,SGS,etc and high quality available
    3. Quick delivery
    4. Best after-sales services
    5. OEM & ODM available


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