TCB COTS+ Polymer Capacitors KYOCERA AVX TCB COTS+ Polymer Capacitors are suited for critical applications that require low ESR with stable, high-frequency capacitance retention and longer lifetime performance. The TCB series is a Commercial-Off-the-Shelf-Plus (COTS+) version of the professional grade TCR polymer series. This TCB COTS+ series features an improved base reliability of 0.5%/1000hrs, a robust design for a long operation lifetime, and statistical screening that receives 100% preconditioning, including sure and accelerated aging. KYOCERA AVX TCB COTS+ Polymer Capacitors are ideal for long lifetime DC/DC converter applications in telecommunications, industrial, and avionics.