I need to desolder a large SMD module from a board and due to the large RF shield on top I can't use (exclusively) hot air, I need to heat from the bottom. I can't use an oven due to plastic components, I need to be targeted with heating. The area immediately below the module is clear but there are obstacles (including plastic ones) nearby so I can't use a hotplate, at least not a standard sized one.
Is there such a thing as a mini-hotplate, something around 1" x 1" that the bottom of the PCB can be thermally coupled to below the target IC, maybe with a thermocouple that can be put on the top side for temperature control?
Or would it be best to use a regular hotplate with something like an 1" cubed aluminum block to conduct the heat to the desired area?