Tantalum users are moving to Super Capacitors

Andy_Brook — Thu, 07 Oct 2021 07:52:01 GMT

Current Revision posted to Documents by Andy_Brook on 10/7/2021 7:52:01 AM

There is a growing interest from Tantalum users to move to Cellergy’s Aqueous Super Capacitor Technologies

The market for Wireless Applications is growing at a phenomenal rate, such as GSM/GPRS, Bluetooth, RFiD, Zigbee and WiFi. With the nature of these products many are used within portable appliances and powered by Battery technology and therefore to support the Pulse requirements need to have Hi CV capacitor products with very Low ESR and low leakage to manage pulse requirements. Tantalum capacitor technology has been the incumbent source for many years but there are drawbacks.

One of the most common Tantalum Capacitance values is the 2.2uf whereas the lowest CV from Cellergy is 12mF. Leakage current can vary from 55uA to 130uA (Tantalum manufacturers vary) to just 3uA for 12mF Super Capacitors.

Tantalum manufacturers recommend only applying 50% of the nominal voltage in these applications, whereas Cellergy products work at the selected voltage.

Aqueous Super Capacitors respond well to Hi Discharge requirements for pulse applications, far more successfully than Tantalum Capacitors which adversely suffer from degradation when subject to constant Hi Discharge.

Super Capacitors are very stable in terms of their structure and electrical characteristics. Super Capacitor availability , price and lead times are also excellent.

Super Capacitors are now a serious consideration when compared to older Tantalum technologies. Cellergy technology offers a range from 1.2v to 14v in sizes starting at just 12mm square with Capacitances starting at 7mF rising to 700mF.

For more info on Cellergy Super Capacitors please click here.

Tags: bluetooth, vishay, wifi, cellergy, suer_capacitor, avx, rfid, tantalum, esr, gsm, hi_cv, super_cap, gprs, hicv, low_esr, kemet, zigbee