ESDAVLC6V1-1BM2 Datasheet, PDF (10/13 Pages) STMicroelectronics – Single line low capacitance Transil for ESD protection

Recommendation on PCB assembly
ESDAVLC6V1-1BM2, ESDAVLC6V1-1BT2
4
Recommendation on PCB assembly
4.1
Stencil opening design
1. General recommendation on stencil opening design
a) Stencil opening dimensions: L (Length), W (Width), T (Thickness).
Figure 26. Stencil opening dimensions
L
TW
b) General design rule
Stencil thickness (T) = 75 ~ 125 µm
Aspect
Ratio
=
W-----
T
≥
1.5
Aspect Area = -2---T---L-₍---L-^×---+--W---W-------₎ ≥ 0.66
2. Reference design
a) Stencil opening thickness: 100 µm
b) Stencil opening for leads: Opening to footprint ratio - between 60% and 65%.
Figure 27. Recommended stencil windows position
Package footprint
Lead footprint on PCB
Lead footprint on PCB
Stencil window
position
0.39 mm
Stencil window
position
0.45 mm
0.05 mm
0.05 mm
4.2
Solder paste
1. Halide-free flux qualification ROL0 according to ANSI/J-STD-004.
2. “No clean” solder paste is recommended.
3. Offers a high tack force to resist component movement during high speed
4. Solder paste with fine particles: powder particle size is 20-45 µm.
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