Approval sheet

Page 6 of 9

ASC_WA04/06_V15

Oct.2010

MOUNTING

Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by

automatic placement systems.

Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).

Electrical connection to the circuit is by individual soldering condition.

The end terminations guarantee a reliable contact.

SOLDERING CONDITION

The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260

°C for 10

seconds. Therefore, it is possible to mount Surface Mount Resistors on one side of a PCB and other discrete

components on the reverse (mixed PCBs).

Surface Mount Resistors are tested for solderability at 235

°C during 2 seconds. The test condition for no

leaching is 260

°C for 30 seconds. Typical examples of soldering processes that provide reliable joints without

any damage are given in Fig 4.

Fig 4. Infrared soldering profile for Chip Resistors array