This part is a kind of semiconductor called BCD-9104B.

Function of this product has LED Display.

Manufacturers : American Bright Optoelectronics

Image and pinout :

Some of the text within the PDF file :

BRIGHT LED ELECTRONICS CORP. SINCE 1981 BCD-9104B ● 1. 2. 3. 4. 5. 6. 7. Features : 0.39 inch (9.9mm) digit height. Continuous uniform segments. Low power requirement. Excellent characters appearance. Solid state reliability. Multiplex driver common anode. Single color ● Package Dimensions : 6.3(.24 8) 1.0(.03 9) 10 *10 0.5 6.5(.256) (.394 .02) 9.9 (.390) 14.0 (.551) 15.8(.622) 11.6(.457) 10(.394) 10(.394) 10(.394) 40.0(1.574) 1.0(.039) 6.0(.236) 7.0(.276) ● 1. 2. Description : The BCD-9104B is 9.9mm (0.39〞) digit height four digit seven-segment display. This product use super red chips, which are made from AlGaAs on GaAs substrate. 0.45(.018) 2.54x12=30.48(1.2) PIN 1. 3. 4. This product have a black face and white segments. substance, comply ROHS standard. This [ ... ]

BCD-9104B PDF Datasheet Download