IPC-D-859.pdf - 第72页

IPC-859-6-3 Figure 6–3 T est Coupon B (Layer 1) IPC-859-6-4 Figure 6–4 T est Coupon C (Layer 2) 1.5 mm [0.059 in] 1.5 mm [0.059 in] 1.5 mm [0.059 in] W=12mm [0.470 in] 1.5 mm [0.059 in] 1.0 mm [0.040 in] (TYP . 3 Pl.…

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evaluate via resistivity. Vias are on 1.0 mm [0.040 in.] cen-
ters with interconnecting conductors 0.10 mm [0.004 in.]
wide. Via size should be typical of that used on the parts in
the lot.
6.5.5.8 Coupon H This coupon (Figure 6–10) is used to
evaluate capacitance and current density. Pattern is 10
square millimeters [0.0015 square inches].
6.5.5.9 Coupon J This coupon (Figure 6–11) is used to
measure conductor resistivity on a dielectric. Pattern is 200
squares long, printed on two layers of dielectric.
6.5.5.10 Coupon K This coupon (Figure 6–12) is used to
evaluate conductor resistivity on a substrate. Pattern is
same as Coupon J, except it is printed directly on the sub-
strate.
6.5.5.11 Coupon L This coupon (Figure 6–13) is used to
evaluate fine line resistivity. Pattern is 200 squares long,
printed on dielectric.
Figures 6–14 through 6–17 show test circuit configuration
for top and bottom layers, insulation layer, and via fill
layer.
6.5.6 Added Test Circuitry When additional testing is
desired for via tests, capacitance testing, or conductor resis-
tivity, the artwork shown in Figures 6–18 through 6–20
may be used. These need not be included in the master
drawing artwork.
IPC-859-6-2
Figure 6–2 Test Coupon A (Layer 2)
W
16 mm [0.630 in]
L
Land size:
2.0 x 2.0 mm [0.079 in x 0.079 in]
square (Typ.)
L = ( )= 2.5 mm [0.098 in]
Nr = No. of layers (Even Nos.)
= No. of layers + 1 (Odd Nos.)
Nr 3.5 mm
2 [0.138in]
x
December 1989 IPC-D-859
65
IPC-859-6-3
Figure 6–3 Test Coupon B (Layer 1)
IPC-859-6-4
Figure 6–4 Test Coupon C (Layer 2)
1.5 mm
[0.059 in]
1.5 mm
[0.059 in]
1.5 mm
[0.059 in]
W=12mm [0.470 in]
1.5 mm
[0.059 in]
1.0 mm [0.040 in] (TYP. 3 Pl.)
2.0 mm
[0.079 in]
(Typ. 4Pl.)
Land size: 1.5 x 1.5 mm
[0.059 x 0.059 in] square
(Typ.)
L = ( ) + 
[0.118in]
Nr 3.5 mm
Z [0.138in]
x
3.0 mm
Nr = No. of Layers (Even Nos.)
= No. of Layers + 1 (Odd Nos.)
IPC-D-859 December 1989
66
IPC-859-6-5
Figure 6–5 Test Coupon D (Layer 2)
Land size: 1.5mm x 1.5 mm
[0.059 x 0.059 in] square
(Typ.)
1.5 mm [0.059 in] (Typ.)
1.5 mm [0.059 in]
1.5 mm
[0.059 in]
1.5 mm
[0.059 in]
1.5 mm [0.059 in]
0.5 mm [0.020 in]
4 mm [0.158 in]
diameter
1.5 mm [0.059 in]
3.5 mm
[0.138 in]
1.0 mm [0.040 in]
5 mm [0.2 in] (Typ. 8 Pl.)
L = 17 mm [0.665 in}
W = 17 mm [0.665 in}
December 1989 IPC-D-859
67