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The BPW34 is an infrared photodiode from Vishay Semiconductors. This device is used for wide-range detection of infrared radiation, which is specially designed for infrared systems such as remote control applications. It features a high sensitivity of approximately 0.5A/W, low-noise operation, and a spectral response range from 750nm to 980nm. This diode has a hermetically sealed TO-18 package with a lead-free flame-retardant coating and is ideal for applications such as proximity sensors, burglar alarms, and infrared communication systems.