Approval sheet

Page 2 of 7

WR18-20-25X(W)_V17

DEC - 2016

FEATURE

1.

High power rating and compact size

2.

High reliability and stability

3.

Reduced size of final equipment

4.

RoHS compliant and Lead free products

APPLICATION



Power supply



PDA



Digital meter



Computer



Automotives



Battery charger



DC-DC power converter

DESCRIPTION

The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are

added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The

composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to

nominated value within tolerance which controlled by laser trimming of this resistive layer.

The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For

ease of soldering the outer layer of these end terminations is Tin (lead free) alloy.

Fig 1. Construction of 2512, 2010 Chip-R

Fig 2. Construction of a 1218 Chip-R