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H11AA814A is listed in the Transistor, Photovoltaic Output Optoisolators range at ChipApex. The manufacturer field lists Fairchild Semiconductor. Its product description is OPTOISOLTR 5.3KV 1CH TRANS 4-DIP. Review the specifications below when checking this part for your BOM.
The H11AA814A is a single-channel AC input-transistor output optocoupler manufactured by Fairchild Semiconductor. It features two gallium arsenide infrared emitting diodes connected in inverse parallel to drive a single silicon phototransistor. The device is housed in a surface mount DIP4 package and provides high isolation voltage, typically rated at 5000Vrms or 5300V depending on the specific variant documentation.
Verify manufacturer status as Fairchild was acquired by ON Semiconductor. Confirm exact isolation rating (5000V vs 5300V) against specific datasheet revision. Check production status as some listings indicate obsolete or discontinued status. Ensure package type matches DIP4 surface mount requirements.
Select this component when direct AC input sensing is required without additional rectifier components. Verify that the phototransistor output current transfer ratio meets load requirements. Ensure isolation voltage rating satisfies safety standards for the target application environment.
Part of the H11AA814 series from Fairchild Semiconductor, now under ON Semiconductor portfolio. Related variants include H11AA814A.3SD and H11AA814A.300W. The series utilizes gallium arsenide LEDs for efficient infrared emission driving a silicon phototransistor in a 4-pin dual in-line package.
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