Product category:
Capacitors
News Release from: Cap-XX | Subject: CAP-XX HS and HW supercapacitors
Edited by the Electronicstalk Editorial
Team on 12 September 2007
Supercapacitors tolerate high
temperatures
CAP-XX supercapacitors pack the highest energy and power densities into thin, lightweight, prismatic packages that will fit into slim portable devices.
CAP-XX' HS and HW series supercapacitors feature a higher-boiling-point electrolyte that extends operating and storage temperature from 75C to 85C and operating voltages from 4.5 to 5.5V These supercapacitors work reliably in devices where nearby components can get very hot, such as RF power amplifiers, which can reach 120C during transmission, as well as in devices which are exposed to high environmental temperatures, such as a mobile phone left on the dashboard of a car in direct sunlight, or in the engine compartment in an automotive application
This article was originally published on Electronicstalk on 8 Mar 2006 at 8.00am (UK)
Related stories
Supercapacitors put power into cameraphone flashes
A novel power architecture uses supercapacitors to provide LED flash camera phones with enough light to produce high-resolution images.
Supercapacitors boost cellphone audio
Handset power architecture uses supercapacitors to satisfy peak demands while playing music.
The new supercapacitors offer long-life performance at up to 2.75V in single-cell versions, and 5.5V in dual-cell versions with the two cells connected in series.
"These ruggedised supercapacitors support the most environmentally-demanding, power-hungry mobile phone applications", said Anthony Kongats, CEO of CAP-XX.
"The higher voltage enables high-power LED flash for better pictures, and can double audio power for richer-sounding music".
Further reading
New choke eliminates common mode noise
Pulse's ChipChoke series for USB2.0 standard applications are said to eliminate common mode noise in high-speed networks.
Low-profile design for tantalum polymer capacitors
Epcos is now shipping polymer tantalum capacitors in case size X, measuring only 1.5 mm high, 7.3 mm long and 4.3 mm wide.
Low impedance capacitors take the heat
Specialist distributor, Young Electronics, has launched a new series of surface mount capacitors that boast low impedance and high heat capability.
"The new high-temperature threshold assures reliability, even in a phone left in a car on a hot day".
According to Stuart Robinson, director of handset component technologies for Strategy Analytics, "Consumers want their cellphones to be as good as their digital still cameras and produce clear pictures even in low light".
"We estimate that over the next three years high-powered LED flash in cellphones will grow at an annual average rate of 155%, and will be in over 70% of all camera phones by 2010".
"CAP-XX supercapacitors are a technology enabler for this market".
"We have seen them power multiple high-current LEDs to full light intensity, producing clear pictures in low light from up to 3m away".
"I expect their new higher-voltage models will make the results even better".
Supercapacitors deliver 100 times the power of batteries and store 10,000 times more energy than conventional capacitors.
They store electrical energy during periods of low-load power, and then release it in quick "bursts" during peak-power events, supplementing power from the source and smoothing out voltage fluctuations.
CAP-XX supercapacitors benefit from a nanotechnology construction which packs the highest energy and power densities into thin, lightweight, prismatic packages that will fit into slim portable devices.
They store charge on nanoporous carbon electrodes on aluminium foil, arranged in multiple layers and connected in parallel to minimise the resistance and maximise the capacitance of the device.
The new HW series has a 28.5 x 17mm footprint and combines high capacitance (up to 0.4F at 5.5V) with low equivalent-series-resistance (ESR as low as 100mohm at 5.5V) in a thin (0.9 to 2.90mm) package.
The HS series features a 39 x 17mm footprint and combines capacitance of up to 0.7F with ESR as low as 55mohm at 5.5V in the same 0.9 to 2.90mm package.
The low-profile prismatic packages may be soldered or ultrasonic welded to pads on a PCB.
Pulse current for a single pulse is 20A, RMS current is 4A.
The new supercapacitors have power densities as high as 71.5KW/litre and energy densities up to 5.5KJ/litre (or 1.5Wh/litre).
The supercapacitors are suitable for many applications in which the company's general (G series) supercapacitors have been adopted, but which demand an increased environmental operating range and/or a higher voltage rating.
Typical applications have periodic pulsed loads which draw greater power than the voltage source can comfortably deliver.
Applications include high-power LED Flash and high-power audio amplifiers for mobile audio, and digital camera functions such as autofocus, zoom lens and motor drives.
Modems also use supercapacitors, such as the GSM/GPRS/EDGE modems in PCMCIA and CF cards, PCI Expresscards, and USB-attached devices, and the wireless modems in devices powered by fuel cells, solar cells, wind, water, vibration and other low-current energy-harvesting technologies.
Supercapacitors can handle pulsed loads at low temperatures where batteries have difficulty delivering the required current, and in devices powered by low-power, long-life batteries such as lithium thionyl chloride.
Examples include automatic meter reading modules, toll tags/RFID tags, location tracking devices, security systems and M2M wireless sensor networks.
• Cap-XX: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
