Silicon NPN Phototransistors
Source: OPTEK Technology, Inc.
The OP793 and OP798 silicon NPN phototransistors' integrated base-emitter resistors enhance the phototransistor's low current roll-off characteristic
OPTEK Technology, Inc.nd OP798 silicon NPN phototransistors' integrated base-emitter resistors enhance the phototransistor's low current roll-off characteristic, which causes it to ignore low-level ambient lighting while providing sharp turn-on characteristics in low contrast applications. The OP793 has a 130° acceptance angle while the OP798 has a 25° acceptance angle. A plastic, TO-18 package is utilized for both devices.
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