SLVAFU8 July 2024 TPSI2072-Q1 , TPSI2140-Q1 , TPSI3050 , TPSI3050-Q1 , TPSI3052 , TPSI3052-Q1 , TPSI3100 , TPSI3100-Q1
Photo relays experience failure due to potential complications with the internal LED. To elaborate, an LED is subject to light decay, which in the case of a photo relay is the reduction of light output capacity due to extreme conditions, such as over-temperature or over-current. As a result, the LED within a photo relay does not have enough luminosity to drive a gate voltage, which limits the switch functionality of the device.