That's a unit that has to be soldered in place, and it may not just be the diode that's gone bad. If it's a Panasonic TV, some of them required and installation kit which also consisted of a coil and a resistor.
Your biggest problem may be in finding the correct replacement part.
infrared diode
When a Charter TV remote breaks the company will replace the remote. In most cases, there will be no charge to replace the remote.
No, TV remotes use IR light and/or RF transmitter.
The peak wavelength of the IR diode used in TV remotes are usually around 940 nanometers.
Haier
Remote controls very much an electronic device. The electronics read button pushes and convert them into streams of pulses. The pulses are sent to a light emitting diode (LED) where they are turned into light. Therefore the link between the remote control and the television is a purely optical one.
29.95 see remotecontrol.com
In ordinary remote controls for devices such as televisions & DVD players, infra red light is used (naked to the human eye).
One can usually reboot a remote one of two ways. Either press and hold the reset switch, if one is present. If not, then take out and replace the batteries in the remote.
Laser Diode. photo diode
Another diode with similar specifications.
replace the diode