IPC-A-610国际标准中英文对照(doc 17)

IPC-A-610国际标准中英文对照

4.6.2 Heat sink-Contact

散热片――接触片

arget-Class 1,2,3

目标——等级1,2,3

· Component and heatsink are in

full contact with the

mounting surface.

组件和散热片与安装表面完全

接触

· Hardware meets specified attachment requirements.

部件满足规定的接触要求。

Figure图4-64

1. Heat sink

散热片

Acceptable-Class 1,2,3

可接受的——等级1,2,3

· Component not flush.

组件不平齐

· Minimum 75% contact with

mounting surface.

至少有75%与安装表面接触

· Hardware meets mounting

torque requirements if

specified.

如果有规定，部件满足安装的转距要求

Figure图4-65

1. Gap

2. Heat sink

间隙散热片

Defect-Class 1,2,3

缺点——等级1,2,3

· Component is not in contact

with mounting surface.

组件没有接触到安装表面

· Hardware is loose and can be

moved.

部件松弛可以移动。

Figure图4-66

1. Heat sink

2. Gap

散热片间隙

5.1 Orientation

方向

5.1.1 Orientation-Horizontal

方向——水平

Target-Class 1,2,3

目标——等级1，2，3

•Components are centered between

their lands.

组件位于焊盘中央

•Component markings are

discernible.

组件标识清晰可见

•Nonpolarized components are oriented so that

markings all read the same way (left-to-right

or top-to-bottom).

Figure图5-1 无极性组件的方向应使其标识

都能按同样方式进行辨识

（从左到右或从上到下）

Acceptable-Class 1,2,3

可接受的——等级1，2，3

•Polarized and multilead

components are oriented

correctly.

有极性和多引脚的组件应按正确

方向安装。

•When hand formed and

hand-inserted, polarization symbols are discernible.

当手工成型及手插件时，极性符号可以辨识。

•All components are as specified and terminate to

Figure图 5-2 correct lands.

所有组件都符合规定并连接到正确的焊盘上。

•Nonpolarized components do n ot need to be oriented so that markings all read the same way(left-to right or top to-bottom).

无极性的组件不需要按同样的方向，只要标识可按相同方向辨识即可（从左到右或从上到下）.

5.1.1 Orientation-Horizontal(cont.)

方向——水平（续）

Defect-Class 1,2,3

缺点——等级1，2，3

•Component is not as specified

(Wrong part).

组件不符合规定（组件错误）

•Component not mounted in

correct holes.

组件没有安装在正确的孔中。

•Polarized component mounted backwards.

有极性组件安装方向相反。

•Multileaded component not oriented correctly.

Figure图 5-3 多引脚组件的安装方向不正确。

5.1.2 Orientation-Vertical

方向——垂直

Target-Class 1,2,3

目标——等级 1，2，3

•Nonpolarized component

markings read from the top

down.

无极性组件的标识可以从上至

下辨识

•Polarized markings are

located on top.

极性标识位于顶部.

Figure图 5-4

Acceptable-Class 1,2,3

可接受的——等级 1，2，3