This part is a kind of semiconductor called PT1302B-C2.
Function of this product has 5mm Phototransistor.
Manufacturers : Everlight
Image and pinout :
Some of the text within the PDF file :
Technical Data Sheet 5mm Phototransistor T-1 3/4 PT1302B/C2 Features ․Fast response time ․High photo sensitivity ․Pb free ․The product itself will remain within RoHS compliant version. Descriptions ․PT1302B/C2 is a high speed and high sensitive silicon NPN phototransistor molded in a standard φ5 mm package. Due to its black epoxy the device is sensitive Applications ․Infrared applied system ․Camera ․Printer ․Cockroach catcher Device Selection Guide LED Part No. PT Chip Material Silicon Lens Color Black Everlight Electronics Co., Ltd. Device No：DPT-130-023 http:www.everlight.com Prepared date：07-20-2005 Rev 3 Page: 1 of 7 Prepared by：Jaine Tsai PT1302B/C2 Package Dimensions Notes: 1.All dimensions are in millimeters 2.Tolerances unless dimensions ±0.25 [ ... ]