Space-grade sealed polymer chip capacitors extend value range

March 18, 2016 // By Graham Prophet
AVX presents its TCH Series of capacitors as delivering the highest voltages of any space-grade SMD polymer capacitors currently available, and the first effective polymer solution for mission-critical automotive, avionics, aerospace, defence, and power applications

The series now extends to a 33µF/75V code, packaged in robust, hermetically sealed ceramic cases filled with inert gas in order to eliminate the potential for materials and performance degradation resulting from exposure to high temperature, high humidity, and ambient atmosphere.


Manufactured and screened using AVX’s Q-Process, which identifies and removes components that may experience excessive parametric shifts or operational instability, TCH Series polymer chip capacitors exhibit high reliability endurance of up to 10,000 hours at 85ºC and rated temperature, and exhibit: low ESR, low derating capabilities, low leakage current (0.1 CV), high ripple current, high capacitance (22 µF to 330 µF), and the highest voltages (10–100V) of any space-grade SMD polymer capacitor currently available on the market.


Housed in large CTC-21D hermetically sealed cases especially designed to provide high capacitance and stable operation in harsh environments, TCH Series high voltage polymer chip capacitors are available with gold-plated J-lead, tin/lead-plated J-lead, and gold-plated undertab terminations. The dimensions for TCH Series capacitors with J-leads are 11.5 x 12.5 x 6.15 mm, and the dimensions for those with undertab terminations are 11 x 12.5 x 5.95 mm; they are rated for use in temperatures spanning -55ºC to +125ºC. The series is now available in seven codes: 330 µF/10V, 220 µF/16V, 150 µF/25V, 100 µF/35V, 47 µF/50V, 33 µF/75V, and 22 µF/100V; however, nearly 20 additional codes spanning 15 µF to 680 µF and 10V to 100V are actively in development.