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K814P is listed in the Transistor, Photovoltaic Output Optoisolators range at ChipApex. The manufacturer field lists Vishay Semiconductor Opto Division. Its product description is OPTOISOLATOR 5KV 1CH TRANS 4-DIP. Review the specifications below when checking this part for your BOM.
The K814P is a single-channel optocoupler featuring an NPN phototransistor output optically coupled to two gallium arsenide infrared emitting diodes with reverse polarity protection. It provides high isolation voltage of 5000Vrms and low coupling capacitance of typical 0.3 pF. The device offers a minimum current transfer ratio of 20% and supports endstackable 2.54 mm spacing in a 4-pin DIP package.
Verify component authenticity through authorized Vishay distributors. Confirm package type matches 4-DIP specifications. Check datasheet revisions for parameter updates. Ensure storage conditions comply with moisture sensitivity levels. Validate supplier documentation against official Vishay part number records before purchase.
Select this component when high isolation voltage and low coupling capacitance are required. Consider the dual-diode input structure for improved reverse polarity tolerance. Evaluate the 20% minimum CTR against circuit gain requirements. Verify mechanical compatibility with 2.54 mm endstackable spacing constraints.
The K814P belongs to Vishay's K814P/K824P/K844P family of optocouplers. These devices share similar phototransistor output characteristics but differ in pin configurations and channel counts. The K814P specifically represents the single-channel variant designed for compact isolation applications requiring reliable AC input handling.
No public confirmed substitute part numbers are available in the provided documentation.
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