Wirewound resistors boast consistent operation

An Ohmite product story

Edited by the Electronicstalk editorial team Mar 7, 2005

New moulded axial leaded wirewound resistors use high-purity ceramic cores with wire winding which are spot welded by CNC machine tools to ensure total operational consistency throughout.

The new WH/WN/WL series miniature moulded axial leaded wirewound resistors from Ohmite use high-purity (96% alumina) ceramic cores with wire winding which are spot welded by CNC machine tools to ensure total operational consistency throughout.

The resistors are also encapsulated with epoxy molding compound using advanced IC encapsulation mould/die technologies.

The WH and WN models possess an ultrahigh ohmic value and Ayrton Perry noninductive windings are available.

Both meet the stringent requirements of MIL-R-26F and MIL-STD-202.

The WL version has ultralow ohmic values for current sensing applications.

All versions are miniaturised for better power to dimension ratios and all have very low inductance of less than 1nH at 1MHz test.

Available in 0.5, 1 and 2W sizes ranging from 5.08 to 11.4mm in length and 2.54 to 6.86mm diameters, the components offer resistance values from 0.01 to 8.0kohm which makes them ideally suited for use in precision applications.

The WH/WN/WL series is available in a variety of stock, standard values, all at 1% tolerance and are RoHS compliant with 100% Sn (lead free) coated terminals.