This part is a kind of semiconductor called TSOP1736CB1.

Function of this product has Photo Modules for PCM Remote Control Systems.

Manufacturers : Vishay Telefunken

Image and pinout :

Some of the text within the PDF file :

TSOP17..CB1 Vishay Telefunken Photo Modules for PCM Remote Control Systems Available types for different carrier frequencies Type TSOP1730CB1 TSOP1736CB1 TSOP1738CB1 TSOP1756CB1 fo 30 kHz 36 kHz 38 kHz 56 kHz Type TSOP1733CB1 TSOP1737CB1 TSOP1740CB1 fo 33 kHz 36.7 kHz 40 kHz Description The TSOP17..CB1 – series are miniaturized receivers for infrared remote control systems. PIN diode and preamplifier are assembled on lead frame, the epoxy package is designed as IR filter. The demodulated output signal can directly be decoded by a microprocessor. TSOP17 is the standard IR remote control receiver series, supporting all major transmission codes. 13 641 Features D Photo detector and preamplifier in one package D Internal filter for PCM frequency D Improved shielding against electrica [ ... ]

TSOP1736CB1 PDF Datasheet Download