Tantalum moulded chip capacitors deliver enhanced performance for detonation systems

Vishay Intertechnology, Inc. offers a new series of TANTAMOUNT surface-mount solid tantalum moulded chip capacitors designed specifically for electronic detonation systems. Combining a robust mechanical design with low leakage current (DCL) and stringent testing specifications, the Vishay Sprague TX3 series devices provide enhanced performance and reliability over commercial tantalum capacitors and MLCCs.

With low DCL values of 0.005CV – and the high energy density of tantalum compared to other capacitive technology – the capacitors released deliver more energy to ensure proper ignition. This makes them ideal for remote detonation systems with reliable discharge requirements in mining and demolition applications. The devices' tantalum anode technology and the company's best-in-class dielectric formation ensure stable electric performance in these harsh environments.

To ensure reliability, the series capacitors are tested to more stringent criteria than standard commercial offerings. Each part is 100% surge current tested using standard screening methods and undergoes two additional screenings for key electrical characteristics to eradicate lot-to-lot variations. Providing a robust solution, the devices' capacitive element and lead frame are encapsulated by hard plastic resin. Compared to MLCCs, they offer higher shock (100g) and vibration (20g) capabilities in accordance with MIL-STD-202.

Available in the B (EIA 3528-21) and C (EIA 6032-28) case sizes, the series provides a capacitance range from 10µF to 100µF over voltage ratings from 16V to 25V and a capacitance tolerance down to ±10%. The devices offer ESR from 0.7-Ohm to 2.3-Ohm at +25C, ripple current to 0.438A, and high-temperature operation to +125C. Featuring lead (Pb)-free terminations, the series devices are RoHS-compliant, halogen-free, and Vishay Green.