■ 宽厚比=开口的宽度(W)/模板的厚度(T)>1.5
■ 面积比=开口面积(LXW)/孔壁的面积[2*(L+W)*T]>0.66
■ 一般印焊膏模板开口尺寸及厚度
■ 面积比=开口面积(LXW)/孔壁的面积[2*(L+W)*T]>0.66
■ 一般印焊膏模板开口尺寸及厚度
|
元件类型
|
PITCH
|
焊盘宽度
|
焊盘长度
|
开口宽度
|
开口长度
|
模板厚度
|
宽度比
|
面积比
|
|
PLCC
|
1.27mm
|
0.65mm
|
2.0mm
|
0.60mm
|
1.95mm
|
0.15-0.25mm
|
2.3-3.8
|
0.88-1.48
|
|
(50mil)
|
(25.6mil)
|
(78.7mil)
|
(23.6mil)
|
(76.8mil)
|
(5.91-9.84mil)
|
|||
|
QFP
|
0.635mm
|
0.635mm
|
0.635mm
|
0.635mm
|
0.635mm
|
0.635mm
|
1.7-2.0
|
0.71-2.0
|
|
(25mil)
|
(13.8mil)
|
(59.1mil)
|
(11.8mil)
|
(57.1mil)
|
(5.91-7.5mil)
|
|||
|
QFP
|
0.50mm
|
0.254-0.33mm
|
1.25mm
|
0.22-0.25mm
|
1.2mm
|
0.125-0.15mm
|
1.7-2.0
|
0.69-0.83
|
|
(20mil)
|
(10-13mil)
|
(49.2mil)
|
(9-10mil)
|
(47.2mil)
|
(4.92-5.91mil)
|
|||
|
QFP
|
0.40mm
|
0.25mm
|
1.25mm
|
0.2mm
|
1.2mm
|
0.10-0.125mm
|
1.6-2.0
|
0.68-0.86
|
|
(15.7mil)
|
(9.84mil)
|
(49.2mil)
|
(7.87mil)
|
(47.2mil)
|
(3.94-4.92mil)
|
|||
|
QFP
|
0.30mm
|
0.20mm
|
1.00mm
|
0.15mm
|
0.95mm
|
0.075-0.125mm
|
1.50-2.0
|
0.65-0.86
|
|
(11.8mil)
|
(7.87mil)
|
(39.4mil)
|
(5.91mil)
|
(37.4mil)
|
(2.95-3.94mil)
|
|||
|
0402
|
|
0.50mm
|
0.65mm
|
0.45mm
|
0.6mm
|
0.125-0.15mm
|
|
0.84-1.00
|
|
|
(19.7mil)
|
(25.6mil)
|
(17.7mil)
|
(23.6mil)
|
(4.92-5.91mil)
|
|||
|
0201
|
|
0.25mm
|
0.40mm
|
0.23mm
|
0.35mm
|
0.075-0.125mm
|
|
0.66-0.89
|
|
|
(9.84mil)
|
(15.7mil)
|
(9.06mil)
|
(13.8mil)
|
(2.95-3.94mil)
|
|||
|
BGA
|
1.27mm
|
φ0.80mm
|
|
φ0.75mm
|
|
0.15-0.20mm
|
|
0.93-1.25
|
|
(50mil)
|
(31.5mil)
|
|
(29.5mil)
|
|
(5.91-7.87mil)
|
|||
|
U BGA
|
1.00mm
|
φ0.38mm
|
|
φ0.35mm
|
0.35mm
|
0.115-0.135mm
|
|
0.67-0.78
|
|
(39.4mil)
|
(15.0mm)
|
|
(13.8mil)
|
(13.8mil)
|
(4.53-5.31mil)
|
|||
|
U BGA
|
0.50mm
|
φ0.30mm
|
|
φ0.28mm
|
0.28mm
|
0.075-0.125mm
|
|
0.69-0.92
|
|
(19.7mil)
|
(11.8mm)
|
|
(11.0mil)
|
(11.0mil)
|
(2.95-3.94mil)
|
|||
|
Flip Chip
|
0.25mm
|
0.12mm
|
0.12mm
|
0.12mm
|
0.12mm
|
0.08-0.10mm
|
|
1.0
|
|
(10mil)
|
(5mil)
|
(5mil)
|
(5mil)
|
(5mil)
|
(3-4mil)
|
|||
|
Flip Chip
|
0.20mm
|
0.10mm
|
0.10mm
|
0.10mm
|
0.10mm
|
0.05-0.10mm
|
|
1.0
|
|
(8mil)
|
(4mil)
|
(4mil)
|
(4mil)
|
(4mil)
|
(2-4mil)
|
|||
|
Flip
Chip |
0.15mm
|
0.08mm
|
0.08mm
|
0.08mm
|
0.08mm
|
0.025-0.08mm
|
|
1.0
|
|
(6mil)
|
(3mil)
|
(3mil)
|
(3mil)
|
(3mil
|
|
