New surface-mount V-chip aluminium electrolytic capacitors from ACAL Components are designed to withstand reflow soldering to +260°C. Manufactured by NIC Components, the six new families of liquid electrolyte, aluminium capacitors are compatible with the Sn-Ag-Cu (SAC) alloy lead-free soldering process which has emerged as the industry-standard replacement for Sn-Pb solder alloys for RoHS-compliant products.
Whilst common SAC solder alloys have a melting point of +217oC, the peak reflow soldering temperature recommended by solder manufacturers is between 12oC and 43oC above the melting point. This enables the solder to achieve suitable wetting and to form a quality solder joint.
"Offering a range of key performance characteristics such as low ESRLow Equivalent Series ResistanceLow Equivalent Series ResistanceLow Equivalent Series Resistance, wide operating temperature range, and small form factors, these new capacitors allow designers to combine their optimum performance parameter with the confidence that they are designed for the high temperatures required by RoHS-compliant manufacturing processes.” explained ACAL Components’ Louise Early, General Manager for Passive, Inductive & Battery Products.
NASE, NAWE, NAWT, NAZK, NAZT and NAZU series capacitors are available in case diameters of 4mm, 5mm, 6.3mm and 8mm. Larger case sizes of 10mm, 12.5mm and 16mm are rated for +250oC, +240oC and +235oC peak reflow temperatures respectively. All are supplied on tape and reel which is compatible with automatic pick-and-place equipment.
These new series cover voltage ratings of between 6.3VDC and 50VDC, with capacitanceThat property of a system of conductors and dielectrics which permits the storage of electricity when potential difference exists between the conductors. Its value is expressed as the ratio of a quantity of electricity to a potential difference. A capacitance value is always positive. values from 0.1μFUnit of capacitance. The basic unit of a measure of a capacitor. A capacitor charged to 1 volt with a charge of 1 coulombA coulomb is the unit of electric charge. It is named after Charles-Augustin de Coulomb.1 coulomb is the amount of electric charge transported by a current of 1 ampere in 1 second. It can also be defined in terms of capacitance and voltage, where one coulomb is defined as one farad of capacitance times one volt of electric potential difference. would have a capacitance of 1 farad. 1 microF = .000001 Farads. to 6800μFUnit of capacitance.
The basic unit of a measure of a capacitor. A capacitor charged to 1 volt with a charge of 1 coulombA coulomb is the unit of electric charge. It is named after Charles-Augustin de Coulomb.1 coulomb is the amount of electric charge transported by a current of 1 ampere in 1 second. It can also be defined in terms of capacitance and voltage, where one coulomb is defined as one farad of capacitance times one volt of electric potential difference. would have a capacitance of 1 farad. 1 microF = .000001 Farads. and load-life ratings from 1000 hours to 5000 hours at maximum rated temperatures of +85oC and +105oC.
