Lower impedance for miniature electrolytics

Edited by the Electronicstalk editorial team Oct 23, 2001

Samwha Electric UK has a new series of subminiature aluminium electrolytics with impedances reduced by up to 50% compared with its previous lowest impedance miniature series.

Samwha Electric UK has a new series of subminiature aluminium electrolytics with impedances reduced by up to 50% compared with its previous lowest impedance miniature series.

The 105C wide-voltage series is designed to withstand high ripple currents in long-life, high-frequency applications.

The new Samwha Electric WB Series of miniature radial aluminium electrolytic capacitors offer extremely low impedances at high frequencies.

The capacitors are available in values from 0.22 up to 3300uF from 6.3 to 100V DC.

Designed to operate in temperatures from -40 to +105C, they have a rated load life of 5000 hours for the larger case sizes, when operated at the maximum temperature.

A typical 100uF 16V part measures 11mm high by 6.3mm diameter, and has an impedance of just 0.15ohm at 100kHz when operating at 20C.

It can withstand a ripple current up to 405mA.

A similar size and value WL series capacitor, previously the lowest impedance series, has an impedance of 0.30ohm at 100kHz and 20C.

The Samwha Electric WB series, like the WG and WL series, is solvent proof.