A component carrier is defined as an individual carrier frequency that is part of the larger aggregated spectrum that each band may support. For example, band 41 covers spectrum from 2496 MHz to 2690 MHz, which is 194 MHz of contiguous spectrum. LTE specifications define the supported bandwidths for each band, and band 41 supports channels of 5, 10, 15, and 20 MHz (in Release 15 (5G) up to 100 MHz).
Using the previous table, the first half of the combo CA_41A-66C means that the 41A is made up of one contiguous carrier component of less than 100 MHz, so 41A is a maximum of 20 MHz wide but can be as narrow as 5 MHz.
For example, based on the previous table, CA-13A-41C can consist of two different contiguous component carriers. The C class is defined by using two CCs that can be separated by unused spectrum. Since LTE supports only up to 20 MHz connection, the maximum it allows is two 20 MHz sections of the 2496–2690 spectrum of band 41, and they do not need to be contiguous. So 41C could be 20 MHz at 2500–2520 and 2580–2600 for a total of 40 MHz.
In the 5G specification, band 41 (n41) and band 77 (n77) can support up to 100 MHz per component carrier, which allows for much larger carrier aggregation bandwidth.