Electrolytics withstand reflow soldering to +260°C

2nd April 2007

ES Admin

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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 ESR, 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 capacitance values from 0.1µF to 6800µF and load-life ratings from 1000 hours to 5000 hours at maximum rated temperatures of +85ºC and +105ºC.