Rework system provides even heating

The Sniper-WB, available from Kaisertech, has been developed to rework PCBs as small as 51 x 51mm right up to 508 x 610mm, and even larger boards can be accommodated by special request.

The Sniper-WB, available from Kaisertech, has been developed to rework PCBs as small as 51 x 51mm right up to 508 x 610mm, and even larger boards can be accommodated by special request.

The unit provides the careful under-board heating necessary to prevent warping on larger boards and larger SMT components.

A high-energy, 306 x 306mm 3600W panel heater and a 1200W reflow heater ensure that the entire PCB is stabilised and warping is avoided.

The high-energy capacity reduces the temperature required to reflow, an important feature when reworking TBGA components that can warp if exposed to high temperatures for extended periods.

Other packages such as CCBGA, PBGA and large QFP will also benefit from this feature.

The XY table has ledge support rails for the PCB and steel support rods prevent board sag and warping.

Operational programming includes a 16-profile 16-segment controller that is programmed with an integral keypad but the system can also be controlled via an RS232 connection by an external computer.

Another significant Sniper feature is a split vision system that provides fast registration and fast placement.

A split image of the component and PCB component pattern is viewed on a colour monitor, and axis adjustment is made with a vacuum locked PCB worktable.

Once aligned the component is automatically placed simply by the press of a button.

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