![]() ![]() Additionally, when a reverse current flows, the subsequent light-emitting efficiency is lowered. In this case, the LED does not emit light. When the reverse withstand voltage is exceeded, a reverse current suddenly flows. ![]() Note that the reverse withstand voltage of the LED on the light-emitting side is low. Light-Emitting Diode (LED): Reverse Voltage: V R (V) The allowable maximum current at which destruction does not occur, within the allowable power dissipation (P D) range of the LED on the light-emitting side when the ambient temperature is 25 ☌. Light-Emitting Diode (LED): Forward Current: I F (mA) The allowable temperature range when power is not applied (stored state). In the case of photocouplers, the temperature at which power can be applied is not described as the "package surface temperature", but instead as the "ambient temperature (air temperature around the device)". Moreover, power application is inhibited when the actual ambient temperature is out of this range. Usually when the ambient temperature rises, the power dissipation (P D, P C) declines. The allowable temperature range in which power application is possible. Normally, this value is guaranteed not for an unlimited period, but for a limited test time, of 1 minute, for example. This value guarantees a certain insulation resistance. The allowable maximum alternating current voltage that can be applied between the input pins and output pins is expressed as a root mean square (rms) value. Absolute Maximum Ratings Isolation Voltage: BV (Vrms) ![]()
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