T598 +125°C Automotive Polymer Tantalum Capacitors KEMET T598 Automotive Polymer Tantalum Capacitors are a high-performance automotive-grade series developed to deliver high reliability and stability under harsh environmental conditions. Special enhancements to the design and material deliver 1000 hours under +85°C/85%RH and comply with all AEC-Q200 qualification testing. KEMET T598 Automotive Polymer Tantalum Capacitors are manufactured in an ISO TS16949-certified plant and subject to PPAP/PSW and change control.