IPC-SM-782A 表面安装设计和焊盘设计标准(带BGA).pdf - 第143页
RLP No. Component Identifier (Pin Count) Z (mm) G (mm) X (mm) Y (mm) C (mm) D (mm) E (mm) Placement Grid (No. Grid Elements) ref ref basic basic 500A SOJ 14/400 1 1.80 7.40 0.60 2.20 9.60 7.62 1.27 26x22 501A SOJ 16/400 1…
Component
Identifier
(Pin Count)
L (mm) S (mm) W (mm) T (mm) B (mm) H (mm) P (mm)
min max min max min max min max min max max basic
SOJ 14/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 9.65 9.96 3.75 1.27
SOJ 16/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 10.92 11.23 3.75 1.27
SOJ 18/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 12.19 12.50 3.75 1.27
SOJ 20/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 13.46 13.77 3.75 1.27
SOJ 22/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 14.73 15.04 3.75 1.27
SOJ 24/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 16.00 16.31 3.75 1.27
SOJ 26/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 17.27 17.58 3.75 1.27
SOJ 28/400 10.92 11.30 6.92 7.60 0.38 0.51 1.60 2.00 18.54 18.85 3.75 1.27
SOJ 14/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 9.65 9.96 3.75 1.27
SOJ 16/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 10.92 11.23 3.75 1.27
SOJ 18/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 12.19 12.50 3.75 1.27
SOJ 20/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 13.46 13.77 3.75 1.27
SOJ 22/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 14.73 15.04 3.75 1.27
SOJ 24/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 16.00 16.31 3.75 1.27
SOJ 26/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 17.27 17.58 3.75 1.27
SOJ 28/450 12.19 12.57 8.19 8.87 0.38 0.51 1.60 2.00 18.54 18.85 3.75 1.27
Figure 2b SOJ component dimensions
▼
▼
▼
▼
▼
▼
▼
P
B
1.02
1.17
A
▼
SL
▼
▼
▼
▼
▼
▼
▼
▼
T
▼
▼
W
A (in.)
ref.
0.400
0.450
A (mm)
min max
10.03 10.29
11.30 11.56
H
IPC-782-10-1-2b
IPC-SM-782
Subject
SOJ
Date
5/96
Section
10.1
Revision
A
Page4of6
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
RLP No.
Component
Identifier
(Pin Count) Z (mm) G (mm) X (mm)
Y (mm) C (mm) D (mm) E (mm)
Placement Grid
(No. Grid
Elements)
ref ref basic basic
500A SOJ 14/400 11.80 7.40 0.60 2.20 9.60 7.62 1.27 26x22
501A SOJ 16/400 11.80 7.40 0.60 2.20 9.60 8.89 1.27 26x24
502A SOJ 18/400 11.80 7.40 0.60 2.20 9.60 10.16 1.27 26x26
503A SOJ 20/400 11.80 7.40 0.60 2.20 9.60 11.43 1.27 26x28
504A SOJ 22/400 11.80 7.40 0.60 2.20 9.60 12.70 1.27 26x32
505A SOJ 24/400 11.80 7.40 0.60 2.20 9.60 13.97 1.27 26x34
506A SOJ 26/400 11.80 7.40 0.60 2.20 9.60 15.24 1.27 26x36
507A SOJ 28/400 11.80 7.40 0.60 2.20 9.60 16.51 1.27 26x38
510A SOJ 14/450 13.20 8.80 0.60 2.20 11.00 7.62 1.27 28x22
511A SOJ 16/450 13.20 8.80 0.60 2.20 11.00 8.89 1.27 28x24
512A SOJ 18/450 13.20 8.80 0.60 2.20 11.00 10.16 1.27 28x26
513A SOJ 20/450 13.20 8.80 0.60 2.20 11.00 11.43 1.27 28x28
514A SOJ 22/450 13.20 8.80 0.60 2.20 11.00 12.70 1.27 28x32
515A SOJ 24/450 13.20 8.80 0.60 2.20 11.00 13.97 1.27 28x34
516A SOJ 26/450 13.20 8.80 0.60 2.20 11.00 15.24 1.27 28x36
517A SOJ 28/450 13.20 8.80 0.60 2.20 11.00 16.51 1.27 28x38
Figure 3b SOJ land pattern dimensions
D
C
▼
▼
▼
▼
GZ
▼
▼
E
▼
▼
▼
▼
Y
X
▼
▼
▼
▼
▼
Grid
Placement
Courtyard
IPC-782-10-1-3B
IPC-SM-782
Subject
SOJ
Date
5/96
Section
10.1
Revision
A
Page5of6
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
6.0 TOLERANCE AND SOLDER JOINT ANALYSIS
Figure 4 provides the solder joint minimums for toe, heel, and
side fillets, as discussed in Section 3.3. The tolerances are
addressed in a statistical mode, and assume even distribution
of the tolerances for component, fabrication, and placement
accuracy.
Figure 4 provides the solder joint minimums for toe, heel, and
side fillets, as discussed in Section 3.3. The tolerances are
addressed in a statistical mode, and assume even distribution
of the tolerances for component, fabrication, and placement
accuracy.
Individual tolerances for fabrication (‘‘F’’) and component
placement equipment accuracy (‘‘P’’) are assumed to be as
given in the table. These numbers may be modified based on
user equipment capability or fabrication criteria. Component
tolerance ranges (C
L
,C
S
, and C
W
) are derived by subtracting
minimum from maximum dimensions given in Figure 2. The
user may also modify these numbers, based on experience
with their suppliers. Modification of tolerances may result in
alternate land patterns (patterns with dimensions other than
the IPC registered land pattern dimensions).
The dimensions for minimum solder fillets at the toe, heel, or
side (J
T
,J
H
,J
S
) have been determined based on industry
empirical knowledge and reliability testing. Solder joint
strength is greatly determined by solder volume. An observ-
able solder fillet is necessary for evidence of proper wetting.
Thus, the values in the table usually provide for a positive sol-
der fillet. Nevertheless, the user may increase or decrease the
minimum value based on process capability.
RLP No.
Tolerance
Assumptions (mm)
Solder Joint
Heel (mm) Toe (mm) Side (mm)
FPC
S
J
H
min J
H
max C
L
J
T
min J
T
max C
W
J
S
min J
S
max
480-487A 0.10 0.10 0.38 0.31 0.51 0.68 -0.32 0.03 0.13 -0.01 0.11
490-497A 0.10 0.10 0.38 0.27 0.48 0.68 -0.28 0.07 0.13 -0.01 0.11
500-507A 0.10 0.10 0.38 0.24 0.44 0.68 -0.27 0.10 0.13 -0.01 0.11
510-517A 0.10 0.10 0.38 0.30 0.51 0.68 -0.31 0.04 0.13 -0.01 0.11
Figure 4 Tolerance and solder joint analysis
Zmax = Lmin + 2J
T
min + T
T
Where:
J
T
min = Minimum toe fillet
T
T
= Combined tolerances
at toe fillet
Gmin = Smax - 2J
H
min - T
H
Where:
J
H
min = Minimum heel fillet
T
H
= Combined tolerances
at heel fillet
Xmax
Xmax = Wmin + 2J
S
min + T
S
Where:
J
S
min = Minimum side fillet
T
S
= Combined tolerances
at side fillet
▼
▼
Toe Fillet
1
/2 T
S
Heel Fillet Side Fillet
J
S
max
▼
▼
▼
▼
▼
▼
▼
J
S
min
Lmin
▼
▼
Zmax
▼
▼
1
/2 T
T
J
T
min
Smax
J
H
min
1
/2 T
H
▼
▼
▼
▼
▼
▼
▼
▼
J
T
max
J
H
max
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
▼
Gmin
▼
Wmin
▼
IPC-782-10-1-4
IPC-SM-782
Subject
SOJ
Date
5/96
Section
10.1
Revision
A
Page6of6
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ