IR3853MPBF Datasheet, PDF (34/35 Pages) International Rectifier – HIGHLY EFFICIENT INTEGRATED 4A, SYNCHRONOUS BUCK REGULATOR

PD-97516
IR3853MPbF
Stencil Design
Stencils for PQFN can be used with thicknesses of 0.100-0.250mm (0.004-0.010"). Stencils thinner
than 0.100mm are unsuitable because they deposit insufficient solder paste to make good solder
joints with the ground pad; high reductions sometimes create similar problems. Stencils in the range
of 0.125mm-0.200mm (0.005-0.008"), with suitable reductions, give the best results.
Evaluations have shown that the best overall performance is achieved using the stencil design shown
in following figure. This design is for a stencil thickness of 0.127mm (0.005"). The reduction should be
adjusted for stencils of other thicknesses.
Stencil pad sizing (all dimensions in mm)
Stencil pad spacing (all dimensions in mm)
34
Rev 4.0