CP60301233H vs CP60301531H vs CP603315H

PartNumber	CP60301233H	CP60301531H	CP603315H
Description	peltier, 30 x 12 x 3.3 mm, 6.0 A, wire leads	peltier, 30 x 15 x 3.1 mm, 6.0 A, wire leads	30 x 30 x 3.15 mm 6.0 A Input w/Leads