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Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression

    Buy cheap Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression from wholesalers
     
    Buy cheap Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression from wholesalers
    • Buy cheap Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression from wholesalers
    • Buy cheap Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression from wholesalers
    • Buy cheap Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression from wholesalers
    • Buy cheap Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression from wholesalers

    Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression

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    Model Number : 10D-7
    Price : 0.015~0.025 USD/PC
    Payment Terms : T/T,Paypal
    Supply Ability : 100KKPCS
    Delivery Time : 1-2 Weeks
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    Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression


    Surge Current Limiting MF72 Power NTC Thermistor Resistor Disc NTC 10D-7 10D7 Thermal Resistor Posistor Suppression


    Description


    This product effectively supresses surge currents that are generated when switching power regulators
    are turned on.


    NTC thermistor has to be connected in series to the power source circuit to avoid the surge current at the instant when the electronic circuits are turned on. The device can effectively suppress the surge current, and its resistance and power consumption can be greatly reduced after that through the continuous effect of the current so as not to affect the normal work current. Therefore the Power NTC thermistor is the most convenient and efficient instrument to curb the surge current and protect the electronic devices from being damaged.



    Features


    1. Lead is not contained in the ceramic element, the terminations, the solder for inner connection and the coating resin.
    2. Most suitable for power supplies of less than 100W 3. Excellent recovery characteristics due to resin coating with excellent heat characteristics
    4. Highly reliable



    Applications


    1. Switching power supplies
    2. CRT monitors
    3. Color televisions
    4. VCR power supplies
    5. Other power circuits


    Main parameters and dimension


    P/N

    Rated

    Resistance

    (A)DLF

    Dimensions

    (Unit:mm)

    Max. Steady

    State Current

    DmaxLminF±1Tmaxd
    5D-5516.5255.0/2.550.55/0.45
    10D-5100.76.5255.0/2.550.55/0.45
    20D-5200.56.5255.0/2.550.55/0.45
    5D-7528.525550.55
    8D-7818.525550.55
    10D-71018.525550.55
    12D-71218.525550.55
    16D-7160.78.525550.55
    20D-7200.68.525550.55
    22D-7220.68.525550.55
    33D-7330.58.525550.55

    Application Circuit



    Determination of Allowable Current



    ROBUSTNESS OF TERMINATIONS


    The leads meet the requirements of IEC 60068-2-21.

    TestTest conditionsRemarks
    Tensile strengthTest Ua1: Fasten body with a force
    applied to each lead 10 [N] for 10 [s]
    No visible damage
    Bending strengthTest Ub:
    Fasten body with two 90°-bends in
    opposite direction at a force of 10 [N]
    No visible damage
    (Peel off of coating along the
    lead accepted)

    Mechanical Requirements


    ItemRequirementsTest Method
    1.Solder-abilityThe terminals shall be uniformly tinned, and its area≥95%Dipping theNTC terminals to a depth of 15mm in a soldering bath of 245±5℃ and to the place of 6mm far from NTC body for 3±0.5s (See IEC68-2-20 /GB2423.28 Ta )
    2.Resistance To Soldering Heat

    No visible mechanical damage.

    ΔR/RN ≤20%

    (ΔR =∣RN-RN'∣)

    Dipping the NTC terminals to a depth of 15mm in a soldering bath of 260±5℃ and to the place for 6mm below from NTC body for 3±0.5s.After recovering4-5h under 25±2℃. The rated zero power resistance value RN' shall be measured.

    (See IEC68-2-20 /GB2423.28 Tb)

    3.Strength of lead terminal

    No break out

    ΔR/RN ≤20%

    (ΔR =∣RN-RN'∣)

    Fasten the body and apply a force gradually to each lead until 10N and then keep for 10sec, Hold body and apply a force to each lead until  90°slowly at 5N in the direction of lead axis and then keep for 10sec, and do this in the opposite direction repeat for other terminal. After recovering 4~5h under 25±2℃, the rated zero power resistance value RN' shall be measured.

    (See IEC68-2-21/GB2423.29 Ua / Ub)


    Reliability Test


    ItemRequirementsTest Method
    1.Temp. Cycling Testing

    No visible mechanical damage.

    ΔRN / RN ≤20%

    (ΔR =∣RN-RN'∣)

    Ta:-40±3℃/ 30min→25±2℃/ 5min→ Tb:160±3℃/ 30min→25±2℃/ 5min Cycles: 5times

    After recovering 4~5 h under 25±2℃, the rated zero power resistance value RN' shall be measured.

    2.Electrical Cycling Testing

    Ambient temp. Range:25℃±2℃.

    Cycles: 2,000times On / Off: 5 s / 55 s

    Test Current: 7A

    After recovering 4~5h under 25±2℃, the rated zero power resistance value RN' shall be measured.

    3.LoadLife ( Endurance ) Testing

    Ambient temp. Range:25℃±2℃; 7A/ 1,000±24h

    After recovering 4~5 h under 25±2℃, the rated zero power resistance value RN' shall be measured.

    4. Humidity Testing

    No visible mechanical damage.

    ΔRN / RN ≤20%

    (ΔR =∣RN-RN'∣)

    Ambient temp. range : 40℃±2℃

    R.H.:93±3% , Energized time:1000±24 h

    After recovering 4~5 h under 25±2℃, the rated zero power resistance value RN' shall be measured.


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