APITech acquired Texas Spectrum Electronics (TSE) in 2014. The TSE product line includes a wide range of EMI and EMP filtering and surge suppression products. These products have been used by a wide range of defense and commercial customers in a wide range of military programs and high-reliability industrial applications since 1976.
The TSE product lines are designed to aid system compliance with several MIL standards for conductive EMI and transient voltage suppression including: MIL-PRF-15733, MIK-STD-202, MIL-STD-220B, MIL-STD-461, MIL-PRF-28861, MIL-I-45208, ASTM B545, and MIL-STD-810.