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Standard Regulator 5 Volt 0.14 Amp 3 Pin TO-92 Box

78L05: MAJOR BRANDS View Larger Image
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Jameco Part no. 51182
Manufacturer   MAJOR BRANDS
Manufacturer no. 78L05
Catalog 152 , page 11
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Standard Regulator


The LM78LXX series of three terminal positive regulators is available with several fixed output voltages making them useful in a wide range of applications. When used as a zener diode/resistor combination replacement, the LM78LXX usually results in an effective output impedance improvement of two orders of magnitude, and lower quiescent current. These regulators can provide local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available now allow the LM78LXX to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment. With adequate heat sinking the regulator can deliver 100mA output current. Current limiting is included to limit the peak output current to a safe value. Safe area protections for the output transistors is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.


  • Output voltage tolerances of ±5% over the temperature range
  • Output current of 100mA
  • Internal thermal overload protection
  • Output transistor safe area protection
  • Internal short circuit current limit
  • No external components

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  • Specification Value
    Minimum Input Voltage6.7V
    Maximum Input Voltage35V
    Output Voltage5V
    Maximum Output Current0.14A(Typ)
    Maximum Power Dissipation750mW
    Maximum Quiescent Current5mA
    Number of Outputs1
    Typical Quiescent Current3mA
    Junction to Ambient230C/W(Typ)
    Junction to Case60C/W(Typ)
    Minimum Operating Temperature0°C
    Maximum Operating Temperature125°C
    MountingThrough Hole
    Specification Value
    Product Width4.19mm(Max)
    Product Height5.2mm(Max)
    Product Length5.2mm(Max)
    Product TypeRegulator
    Output TypeFixed
    Line Regulation75mV
    Load Regulation60mV

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