● Micro Cryocoolers – Cooling capacity less than 1W at 77K tip temperature, characterized by gas bearing compressor with a free displacer cold finger

● Mini Cryocoolers – Cooling capacity from 1W to 10W at 77K tip temperature, characterized by gas bearing compressor with a pulse tube cold finger

● Mid-size Cryocoolers – Cooling capacity from 10W to 100W at 77K tip temperature, characterized by gas bearing compressor with a pulse tube cold finger

● Large-size Cryocoolers – Cooling capacity more than 100W at 77K tip temperature, characterized by gas bearing compressor with a pulse tube cold finger