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    專業用語

    Common

    特點

    符號

    單元

    說明

    Absolute Maximum Ratings

    Maximum value of limit per each item

    Operating Temperature

    Topr

    (℃)

    maximum Temperature at driving of semiconductor

    Storage Temperature

    Tstg

    (℃)

    maximum Temperature at non-operation of semiconductor

    Soldering Temperature

    Tsol

    (℃)

    Acceptable sddering temperature at maximum

    LED

    特點

    符號

    單元

    說明

    Power Dissipation

    P

    (mW)

    Permissible Power dissipation between Anode and chathode

    Forward Voltage

    VF

    (V)

    Voltage between Anode and chathode at forward current drive

    Forward Current

    IF

    (mA)

    Forward current between Anode and chathode at LED drive

    Pulse Forward Current

    IFP

    (mA)

    Maximum Forward current between Anode and chathode at LED pulse drive

    Reverse Voltage

    VR

    (V)

    Permissible Reverse direct voltage from chathode to Anode at LED drive

    Reverse Current

    IR

    (μA)

    Permissible Reverse direct current from chathode to Anode at LED drive

    Radiant Flux

    Φe

    (mW)

    Radiant energy per time / square emitted from LED

    Power Output

    Po

    (mW)

    Amount of power of radiant flux that LED produces at its output

    Peak Wavelength

    λp

    (nm)

    Peak wavelength in emitting wavelength region

    Spectral Half Width

    ⊿λ

    (nm)

    Wavelength band which becomes half level of energy to peak wavelength

    Half Angle

    ⊿θ

    (°)

    Beam angle which becomes over half level of energy to that of peak position

    Photo detector(PD, Ptr, PhotoIC)

    特點

    符號

    單元

    說明

    Power Dissipation Photo Transistor

    PC

    (mW)

    Permissible Power dissipation between collector and emitter

    Power Dissipation Photo Diode

    PD

    (mW)

    ermissible Power dissipation between Anode and chathode

    Collector-Emitter Voltage

    VCEO

    (V)

    Direct Voltage between Collector and emitter at base open and light detecting

    Emitter-Collector Voltage

    VECO

    (V)

    Direct Voltage between emitter and collector at base open and light detecting

    Reverse Voltage Photo Diode

    VR

    (V)

    Permissible Reverse direct voltage from chathode to Anode at light detecting

    Light Current Photo Transistor

    IC

    (μA)(mA)

    Direct current to be forwarded to collector at light detecting

    Light Current Photo Diode

    ISC

    (nA)(μA)

    Direct short current to be forwarded at light detecting

    Dark Current Photo Transistor

    ICEO

    (nA)(μA)

    Direct current between collector and emitter in dark and at superimposed voltage

    Dark Current Photo Diode

    ID

    (nA)(μA)

    Direct current forwarded to photodiode in dark and at superimposed voltage in reverse direction

    Illumination

    EV

    (lx)

    the luminous flux per unit area on an intercepting surface

    Collector-Emitter Saturation Voltage

    VCE(sat)

    (V)

    Voltage between Collector and emitter at saturated light detecting

    Peak Spectral response

    λp

    (nm)

    Wavelength which has relative peak sensitivity in sensing wavelength region

    Half Angle

    ⊿θ

    (°)

    Sensitive angle which becomes over half level of energy detection to that of peak position

    Low Level Output Voltage

    VOL

    (V)

    Direct Voltage to output at level of output current is low

    High Level Output Voltage

    VOH

    (V)

    Direct Voltage to output at level of output current is high

    Low Level Output Current

    IOL

    (mA)

    Direct output current forwarded at superimposed voltage of low level

    High Level Output Current

    IOH

    (mA)

    Direct output current forwarded at superimposed voltage of high level

    Low Level Supply Current

    ICCL

    (mA)

    Supply current at drive of low level output current

    High Level Supply Current

    ICCH

    (mA)

    Supply current at drive of high level output current

    Response Time Rise Time

    tr

    (ns)(μs)

    Refer to the figure.

    Response Time Delay Time

    td

    (ns)(μs)

    Refer to the figure.

    Response Time Fall Time

    tf

    (ns)(μs)

    Refer to the figure.

    Response Time Storage Time

    ts

    (ns)(μs)

    Refer to the figure.

    Response Time Propagation Time Low to High

    tPLH

    (ns)(μs)

    Refer to the figure.

    Response Time Propagation Time High to Low

    tPHL

    (ns)(μs)

    Refer to the figure.