mutiple fasta to single fasta

i have a huge reference genome with a lot of contigs, it looks something like this.

>aalba5_s00000010
TTGTCTGCTTCACAGTACAGCTAGAAAATTATGAATTCATTTCCCCACATCAAGCAACCCCTGCTTATTC
>aalba5_s00000011
ACTTGGAATGGGATCTTGTTGGGGGGCCAACAGAACCATAAGGGCAATGGCTGCAATCTTTGATAAGATC
>aalba5_s00000012                                                                                                                                                                                                                        
TGTAGCAAACAGCTACGGAAAAATTTTAAAAATTTTCGAAATTTAAATCTGGGGTTCCCTTTCCTGTGTA 
GATGTATTCCCTTTTTAAAGGTTTTCCTAGGACTTGCAGTCATTAATGAGACGTCTTCTCATGATATCCT
AATTTTTGGAAGATGCCTCCTACATCAGGAATCTTTGCTGCCACTTGTCTCTTTCATCAGCCAGATGTCT

how can i subset this that i have a file each with the filename of the name of the contig (examplea alba5_s00000010.fa) conatining its sequence?

tanks for the help