Some of the ordering options include lapping for tighter flatness tolerance, metallizing or pre-tinning the top or bottom of the TEM in preparation for mounting the TEM with solder, sealing for added moisture resistance, adding wire-bond posts, additional testing, and adding or removing lead-wires. Selection of the proper part depends on application specific needs or mounting method. If specific options for a TEM or a different size and performance are needed, II-VI Coherent Thermal Solutions can customize thermoelectric modules to meet requirements.