Electronics Technology


1,0 mm chip trimmer capacitor

20 November 2002 Electronics Technology

How much smaller can a trimming capacitor get? If it is anything to go by, Murata released one that must be getting close to the practical limit. This new trimmer offers two capacitance-trimming ranges, 1,5 to 4,0 pF and 3,0 to 8,0 pF. Nominal dimensions are 1,5 x 1,7 x 0,85 mm, a reduction in volume of 85% by comparison with Murata's established TZV2 series. In spite if its tiny dimensions, a fixed parallel capacitor can also be included at the construction stage, says Murata, saving even more space and reducing mounting costs.

Its unique design contains no plastic, so resistance to soldering heat is high and post-soldering characteristics are good. The TZR1 is also lead (Pb) free, helping users to meet Pb reduction programmes. Stators are colour-coded for identification purposes.

Q at 1,0 MHz and maximum capacitance is 300. TCs are 0 ± 500 ppm/°C or -750 ± 500 ppm/°C, depending on the value chosen. Operating temperature range is -25 to 85°C. Rated at 25 V d.c. Dielectric withstand is 55 V d.c. and insulation resistance is 104 MOhm minimum.

For more information contact Avnet Kopp, 011 809 6100, sales@avnet.co.za, www.avnet.co.za



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