B409x Series SMD Hybrid Polymer Aluminum Electrolytic Capacitors

TDK Corporation expands its B409x series of SMD hybrid polymer aluminum electrolytic capacitors with a design that can withstand mechanical vibrations up to 30 g (MIL-STD-202, Method 204). This is achieved through four posts that extend from the component’s base plate and stabilize the can against mechanical shocks and vibrations. The design is offered with part number suffix 100 (standard types: 000), and these components are generally used in demanding automotive and industrial applications.

The surface-mount components are available with voltage ratings from 25 V to 80 V, and capacitance values range from 56 µF to 1100 µF. Their diameter is 10 mm, and their height ranges from 10.2 mm to 16.8 mm, providing a temperature range of -55°C to +105°C (B40950) and up to +150°C (B40910). Because of the polymer, the B409x series offers a low ESR of 10 mΩ to 33 mΩ and high ripple current capabilities of 2.8 A to 5.8 A. Their useful life exceeds 4000 h at +125°C at the rated voltage and ripple current. The industrial series B40950 has a useful life of more than 10.000 h at a temperature of +105°C at the rated voltage and ripple current.

The web-based AlCap Tool quickly and easily calculates accurate lifetime under application-specific conditions.