2024年4月9日发(作者:联想e495)
电子工艺技术
A25
Electronics Process Technology 201 2年9月第33卷第5期
IPC.T-50H电子电路瓦连与封装术语及定义(待续)
(上接《电子工艺技术》201 2年第4期第A31页)
Lip Height
The perpendicular distance from one primary cutting edge
to another.
刃缘高度
从主切削刃到另一切削刃之间的垂直距离。
Liquidus,Solder
The temperature at which a solder alloy is completely
melted.
焊料液相线
焊料合金完全熔化时的温度。
Liquefaction(Cured Solder Mask)
When cured(solid)solder mask becomes partially to fully
liquefied.
液化(已固化阻焊膜)
已固化的(固态)阻焊膜部分或完全液化。
Load Capacitance
The capacitance seen by the output of a logic circuit or
other signal source.
负载电容
逻辑电路或其他信号源输出的电容量。
Load Time
The time it takes to load a unit in an inspection/test
machine and to perform any necessary programming or
machine alignment.
装载时间
在检验或测试仪器上装载一个测试单元以及进
行一切必要的编程或机械调整所耗费的时间。
Loading Direction
The direction of board passing through an assembly line
viewed from the operator side.
装载方向
从操作人员的视点看电路板流经装配线的方向。
Local FiduciaI
A fiducial mark(or marks)used to locate the position of a
land pattern for an individual component on a printed
board.
局部基准点
印制板上用来确定印制板上个别元器件连接盘
图形位置的基准点(或标记)。
Local Intelligence
The capability of a work station to independently process
data without the use of a host or central processing unit.
局部智能
工作站在不使用主机或中央处理器的情况下独
立处理数据的能力。
Local ReflOW Soldering
The process of reflow soldering using the heat that iS
directly supplied to the local area to be reflowed by an
energy beam flaser) soldering iron or hot air reflow too1.
局部再流焊接
采用激光、电烙铁或热风再流焊装置对局部区
域直接进行加热的再流焊接工艺。
oLcating Accuracy(Component)
The accuracy in positioning of a component described by
the amount of displacement from the desired position.
定位精度(元器件)
通过与理想位置的偏移量描述的元器件定位精度。
Locating Edge
A tooling feature in the form of the edge of a printed board
定位边
以印制板的边作为定位要素。
Locating Edge Marker
A symbol that is used to identify which edge of a printed
board is the index edge.
定位边标识
用来确定印制板的某一边为基准边的符号。
oLcating Hole
See“Tooling Hole.’’
定位孔
见“定位孔”。
Locating Notch
Atoolingfeatureintheform ofa notchin aprinted board
定位切口
以印制板的切口为定位要素。
Locating Slot
A tooling feature in the form of a slot in a printed board
定位槽
以印制板上的槽为定位要素。
oLcation Hole
A hole or notch in the panel or printed board to enable
either to be positioned accurately.
第33卷第5期 IPC—T一5oH电子电路互连与封装术语及定义 h20
定位孔
用于精确定位在制板或印制板的孑L或槽ILl。
Logic
The functional digital circuits used to perform
computational functions.
逻辑电路
用以完成计算功能的功能数字电路。
Logic Diagram
A drawing that depicts the multistate device
implementation of logic functions with logic symbols and
supplementary notations that show the details of signal
lfow and control,but not necessarily the point-to-point
wiring.
逻辑图
运用逻辑符号和辅助标识描述多种状态器件逻
辑功能执行过程的图,可显示详细的信号流程和控
制,但不必标出点到点之问的连线。
Logic Family
A collection of logic functions using the same form of
electronic circuit,e.g.,emitter—coupled logic(EC L),
transistortransistor logic(TTL),complementary metal-
oxide semiconductor logic(CMOS).
逻辑系列
指使用相同形式电路的逻辑功能的集合,如:
发射极耦合逻辑电路(ECL)、晶体管一晶体管逻
辑电路(TTL)和互补金属氧化半导体逻辑电路
(CMOS)
Long——Term Capability
The capability of a process that exhibits statistical control
over an extended period of time.
长期能力
过程在较长时间期限内的统计控制能力。
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Loop Height
The magnitude of deviation of a wire from a straight path
between its end attachment points.
线弧高度
金属线的弯曲顶点距其两端接点连接直线间的距离。
Loop Wire
The curve(arc)in a bonding wire between its end
attachment points.
线环
在两端连接点之间键合线中的曲线(弧线)。
Loss Tangent
See“Dissipation Factor.’’
损耗正切
见“损耗因子”。
Lot Size
A collection of units produced in one continuous,
uninterrupted fabrication gLIB.
批量
连续不问断制程中生产的产品的集合。
Low Residue Solder Paste
A solder paste wherein the ionic,nonionic,and carrier
residues after soldering are controlled to low leve1.
低残留焊膏
焊接后其离子、非离子以及载体残留物均控制
在很低水平的焊膏。
Luminance
A measure of light flux reflected or emitted from a surface
亮度
从一个表面反射或发射出的光通量的度量。
Luminous Energy
A measure of light flux lfow rate,usually in units of
lumenseconds.
光能
光通量流速的度量,通常以lm/s为单位。
Luminous Flux
A measure of lfow of visible light energy past any given
point in space.
光通量
可见光能通过空间内任一指定点的流通量的度量。
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husp一
澈藉料在液体中易转化为胶状悬浮体的特征。
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Lyophobic
A characterization of material that exists in a colloidal
state with a tendency to repel liquids.
疏液性
材料以胶体形式存在且排斥液体的特征。
n
Machine Language
The actual language,usually a binary code,that is
A27 PC—T一50H电子电路互连与封装术语及定义
Manual Data Input
2012: ̄--9月
used by a computer when it performs operations.
机器语言
计算机执行操作时采用的实际语言,通常为二
Computer data that is manually generated with or without
the aid of a data—entry device,such as a keyboard
lightpen,mouse,ete.
进制代码。
Machined Contact
A tvDe of connector contact that consists of solid spring
人工数据输入
通过人工生成的计算机数据,无论是否借助数
据输入装置,如键盘、光笔以及鼠标等。
Manual Soldering
metal that has been formed by machining.(See also
“Sheet—Metal Contact.”1
机械接触件
由加工成型的硬弹性金属组成的连接器接触
See“Hand Soldering.”
人工焊接
件。(又见“金属片接触件”。)
Magniifcation Power
The ratio of the tangent of one-half of the angle(beta)
subtended by the image of an object(H),as seen through
and centered in the ifeld of view of the magnification
device,to the tangent of one—half of the angle(alpha)
subtended by the object(H)as seen at 10 inches by the
unaided eye.(See Figure M一1.)
放火率
通过放大设备的中间位置正对物体影像所看上
去的半角( )的正切与用肉眼从距离物体25.4 am
的地方正看上去的半角( )的正切之比值。(见图
M一1 )
MaiorDelect
A defect that is likely to result in a failure ofa unit or
product or that materially reduces its usability for its
intended purpose.
主要缺陷
有可能导致某一装置或产品失效或者其适用性
显著降低的缺陷。
Manhattan Distance
The orthogonal distance between two points
不采用放
大工具的
目视界面
/
通过放大工
具看到的物
体中心图像
\
放大工具
协助聚焦
可无穷大
图M-1放大率参数
曼哈顿距离
指两点间的垂直距离。
见“手工焊接”。
Manufacturing Drawing
A working document that shows the dimensional limits or
d locations that are applicable to any and all parts of a
product to be fabricated,including the arrangement of
conductors and nonconductive patterns or elements;the
size,type,and location of holes;and all other necessary
information.
加工图
指描述待加工产品任何一个零件或全部零件的
尺寸大小或网格位置的生产文件,包括导线、非导
电图形或元器件的排列和孑L的大小、形状与位置等
所有其他必要信息的文件。
Manufacturing Hole
See“Tooling Hole.’’
加工孔
见“定位孔”。
Margin(Flat Cable)
The distance between the reference edge of a lfat cable and
the nearest edge of the ifrst conductor.(See also“Edge
Spacing.”)
边距(扁平电缆)
扁平线缆的基准边与其第一个导体最近边之间
的距离。(又见“边缘间距”。)
Margin width(Drill、
The thickness of the cylindrical portion of a drill land that
is perpendicular to the leading edge.
棱边宽度(钻头)
指钻头圆柱部分的刀刃口到钻头实体部分的垂
直距离。
Mark(Fabric)
A heavy or light area in a fabric that is due to excessive or
insufifcient filling yarns.
织痕(织物)
由于引纬过密或过稀而导致织物出现局部过厚
或过薄的现象。
第33卷第5期 IPC—T一50H电子电路互连与封装术语及定义 A28
Marking
Recording of traceability and legend information on
hardware.
标记
在硬件上记录可追溯信息及符号信息。
Mask
A coating material,in a specific pattern,that is used to
mask or protect selected areas of conductive circuitry
during manufacturing or testing from the action of an
etchant,plating,solder,etc.
掩膜
用来掩蔽或保护选定导电电路区域的特定图形
上的涂覆层材料,以使该区域在制造或测试期间免
受蚀刻剂、电镀和焊接等的影响。
Mass Lamination
The simultaneous lamination of a number of pre-etched,
multiple-image,C—staged resin panels or sheets that are
sandwiched between layers of B——staged resin and copper
foil.fSee also“Cap Lamination”and“Foil
Lamination.”)
叠合层压
将多张预先蚀刻好的具有线路图形的c阶树脂内
层板,夹 阶树脂半固化片与铜箔之间同时进行层
压。(又见“覆盖层压”和“覆箔层压”。)
Mass Soldering
Methods of soldering in which many joints are made in the
same operation.
群焊
在同一次作业中同时完成很多焊接点的焊接方法。
Master Dot Pattern
See“Hole Pattern.”
点总图
见“孔图”。
Master Drawing
A control document that shows the dimensional limits or
grid locations that are applicable to any and all parts of a
product to be fabricated,including the arrangement of
conductors and nonconductive patterns or elements;the
size,type,and location of holes;and all other necessary
information.
设计总图
用以描述待制产品所需的部分或全部的尺寸范
围或网格位置的控制文件,包括导体和非导电图形
或组件的排布、孔的尺寸、类型和位置以及其他必
需的信息。
Master LiRe
See“Design Width of Conductor.’’
主传输线
见“导体设计宽度”
Master Pattern
See“Production Master.”
底版图形
见“生产底片”。
Maximum Material Condition(MMC)
The condition in which a feature of size contains the most
amount of material within the stated limits of size.
最大材料条件(MMC)
尺寸要素在规定的尺寸范围内包含最多材料量
的状况。
Mealing
A condition in the form of discrete spots or patches that
reveals a separation at the interface between a conformal
coating and a base material on the surface of a printed
board,O13 the surface of an attached component,or both.
起斑
显示覆形涂层与印制板表面基材或元器件表面
基材间存在分离的离散斑点或斑纹状况。
Measling
A condition that occurs in laminated base material in
which internal glass fibers are separated from the resin at
the weave intersection.(This condition manife sts itself in
the form of discrete white spots or“crosses”that are
below the surface of the base materia1.It is usually related
tO thermally-induced stress.)(See also“Crazing,Base
Materia1.”1
起斑
层压基材内玻璃纤维与树脂在织物交叉处发生
分离的状况。(通常表现为基材表面下不连续的白
色方块或“十字”纹,一般与热应力有关。)(参
见“微裂纹,基材”。)
Mechanical Stress
To subject a mechanical component to a process of
physical stress.
机械应力
使机械构件承受物理应力的过程。
Mechanical Wrap
The physical securing of a wire lead or component lead
around a solder termina1.
机械绕接
将导线或元器件引线缠绕到焊接端子上的机械
固定。
Meniscus
The contour of a shape that is the result of the
电子工艺技术
A29
Electronics Process Technology 2012年9月
surfacetension forces that take place during wetting.(See
Figure M-2.)
弯液面
润湿过程中,由于表面张力的作用而引起的外
形轮廓。(见图M一2。)
弯液面
\、
图M-2弯液面
Message(Bar Code)
A string of characters encoded into a bar code symbol of a
specific length.
信息(条码)
编译成一定长度条码符号的一串字符。
Metal-Clad Base Material
Base material covered wifh conductive foil on one or both
sides.
覆金属箔基材
单面或双面覆有导电箔的基材。
Metal—Clad Laminate
See“Metal—Clad Base Materia1.’
覆金属箔层压板
见“覆金属箔基材”。
Metal Core Printed Board
A printed board having a metal core as the support for the
printed board structure,usually used as a heat sink or
power supply grounding layer.
金属芯印制板
以金属芯为结构支撑的印制电路板,金属芯通
常作为散热层或电源接地层。
Metal Migration
The electrolytic transfer of metal ions along an electricallv
conductive path from one metal surface to another when an
electrical potential is applied to the two metal surfaces
.
金属迁移
当电压作用于两个金属表面时,金属离子沿着导
电通路从一金属表面到另一金属表面的电解转移。
Metal Migrativity
The comparative rate of the velocity of metal migration
under the same conditions.
金属迁移率
相同条件下金属迁移速度的相对比率。
Metal Surface Migration
The migration of metal on the surface of an electrical
insulator.
金属表面迁移
金属在绝缘体表面上的迁移。
Metal Through Migration
The migration of metal through an electircal insulator
金属贯穿迁移
金属贯穿通过绝缘体的迁移。
Metalized Land Areas
A pattern of conductive material used on a substrate to
interconnect electronic components.Widened conductor
areas used as attachment point for wire bonding or other
devices.
金属化连接盘区域
实现基板上电子元器件互连的导电材料图形,加
宽的导体区域用作导线键合或其他器件的连接点。
Metalization(n.)
A deposited or plated thin metallic film that is used for its
protective and/or electircal properties.
金属化(名词)
通过沉积或电镀方法形成的薄金属膜,用于保
护和/或提供电气性能。
Microbond
A termination made with a small diameter wire,i.e.,0
.
025
mm[0.001 in]or less.
微键合
用直径不大于O.025 mm的金属线制成的端接点。
Microcircuit
A relatively high density combination of equivalent circuit
elements that are interconnected SO as to perform as an
indivisible electronic circuit component.
微电路
为作为一个不可分割的电子电路元器件运行而
互连在一起的高密度等效电路元器件组合。
Microcircuit Module
A combination of microcircuits and discrete components
that are interconnected SO as to perform as an indivisible
circuit assembly.
微电路模块
为作为一个不可分割的电路组件运行而互连在
一
起的微电路和分立元器件组合。
(待续)
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