CA Axial Solid Tantalum Capacitor

A CA axial solid tantalum capacitor produced by BEC is a highly reliable and polarized electronic component which uses a tantalum anode, tantalum pentoxide dielectric, and solid manganese dioxide (MnO2) cathode. It's housed in a tubular, hermetically sealed with two leads coming out of either ends (cylindrical type). It is featured for stable and good performance in applications like power supplies and military electronics and play the role in offering high capacitance in small sizes with low leakage and good frequency stability. This series of capacitors are widely used in aerospace and defense areas in power supplies for satellites, missiles, and avionics. Also seen in medical and industrial sectors and industrial systems used for power supply filtering, decoupling, and timing circuits in harsh industrial environments.

The CA axial solid tantalum capacitor is a cylindrical type with two leads coming out from two different sides. It's constructed with a solid manganese dioxide electrolyte and combines the high capacitance density of tantalum technology with the mechanical convenience of axial through-hole mounting. It can provide stable performance, low profile and excellent reliability for moderate-to-high voltage/capacitance applications across commercial, industrial and some high-reliability electronics.

Polarity: Strictly polar (anode/cathode marked clearly). The anode is connected to the sintered tantalum pellet, while the cathode to the solid MnO₂ electrolyte and outer lead. Reverse voltage causes irreversible damage or short circuit.

Ultra-low DC Leakage: The solid MnO₂ electrolyte eliminates liquid electrolyte migration, resulting in far lower leakage than wet tantalum and aluminum electrolytic capacitors-perfect for low-power, battery-operated, or precision analog circuits.

Stable capacitance over time and temperature: Negligible capacitance drift (<1%/year under rated conditions); capacitance change ≤±10% across the full -55°C to +125°C.

High Mechanical Robustness: Hermetic sealing and rigid axial lead construction resist vibration, shock, and mechanical stress (meets standards for industrial/military grades).

Long Service Life: ≥10,000 hours @ +125°C (full rated voltage); ≥200,000 hours @ +85°C

Self-Healing Property: A core advantage of solid tantalum technology-if a small dielectric defect occurs, the MnO₂ electrolyte forms an insulating oxide layer at the defect site, preventing short circuits and extending component life.

Pressing

Sintering

Anodising

Aging

Laser Coding

Leakage Current Testing

Forming Tanks

Aging Furnaces

Sintering Furnaces

Auto-taping Machines