IR Transmittor or Receiver

we know that,for generating the infrared light we used IR diode, so it is used as transmittor.

for receiver we can use IR transistor.but it is used in rare case because sun light generate IR light which is also received by the IR transistor.

  so for recieving purpose we can use TSOP(thin small out line package).it can recieve only specific IR for specific frequency. for example TSOP 1738 it can only recieve IR light of 38 khz, therefor sun light not this reciever.

IR diode

                                                                                                                      

TSOP