SN54SC4T125-SEP is a radiation hardened device in a plastic package which allows this device to be used in space applications. The device was verified immune to 43 MeV × cm² / mg at 125°C for single event latch-up (SEL). Each fabrication lot was tested according to MIL-STD-883 for Radiation Lot Acceptance Tested (RLAT) up to 30 krad(Si) and each assembly and test lot follows the process flow shown in Figure 2-1. To maintain the quality of SN54SC4T125-SEP, the device is qualified with Space EP requirements. See Section 3 for further details.