Pitch(mm)MinPTHhole(mm)PADsize(mm)Singleor2linesMinL/W&L-SBaceCopperthicknessHoleSurfacefinishcopperthickness 0.50.60.8 0.150.20.30.25 0.250.30.40.30.50.4 111212 3/34/45/54/46/65/5 1/3OZ1/3orHOZHOZ1/3orHOZ1OZHOZ 20um20um25um20um25um25um ENIGENIGENIGorHALENIGENIGorHALENIGor...
BGA 空洞不良空洞不良之 之解析解析 随着技术的发展，产品的更新，目前的绝大部份电子产品的设计已几乎离不开BGA 这样的核心元器件。BGA 的Size 有大也有小，最大的我做过45 x 45 x 3.5mm ， 最小的仅仅是几个毫米，BGA 的Pitch 也有不同，大的有一点几毫米，小的仅仅达到0.4mm ，甚至在随着科技突飞发展...
适配芯片参数:0.5pitch SIZE:15*15mm 测试座特点: 1、翻盖旋钮结构,针对pin较多的芯片,压力更均匀。芯片接触更好, 2、满足客户10-50W功率的效热需求。支持高频测试。 3、和PCB板通过螺丝的方式固定,无需焊接。取放,维护更方便。 4、寿命长,采用镀金探针,可维修更换。
. 规范-Pad尺寸设计 Pad Size设计规范: PCB 板厂能力决定部分PCB厂商控制Pad Size为 20% 公差,导致Pad变形。如果丝网不更改容易导致连锡。 推动客户要求板厂控制Pad Size,经过调研,大部分板厂 可以将公差控制在10%内。并且要求大小一致。 要求信号Pad Size的直径为0.27mm(10.6mil),和IC的 封装尺寸一样大小。
Example 1: Breaking out a BGA 0.4 mm Pitch This is a standard BGA 0.4 mm pitch. The most appropriate way of fanning it is making use of a blind and buried vias. You begin by adding the layer 1 to the layer 2 blind via on the entire BGA’s GND pins. Now you have completed the...
BGA pitch (1.0 mm1.27 mm) CSP pitch <0.8 mm? In summary, BGA package and CSP package have their own different advantages and disadvantages. It is recommended that no matter what type of packaging method you choose, you need to consider the issue of post-maintenance....
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Thus, mounting precision seems not so essential as fine pitch lead components and the leading control phase in BGA component assembly technology is solder paste printing and reflow soldering. In addition, variation in terms of solder joint shape and size is also associated with many other elements...
PadSize设计规范：PCB板厂能力决定部分PCB厂商控制PadSize为±20%公差，导致Pad变形。如果丝网不更改容易导致连锡。推动客户要求板厂控制PadSize，经过调研，大部分板厂可以将公差控制在±10%内。并且要求大小一致。要求信号PadSize的直径为0.27mm（10.6mil），和IC的封装尺寸一样大小。其公差必须控制在±0.03mm（...
What size BGAs can be reasonably reworked by hand? BGAs up to about 600 balls with 0.8 mm pitch can be reworked with practice using manual tools and optical magnification. Above ~35 x 35 mm size and 0.5 mm pitch requires more advanced rework equipment. ...