參數(shù)資料
型號: SE370C742Ayyz
廠商: Texas Instruments, Inc.
英文描述: TMS370 MICROCONTROLLER FAMILY DATA BOOK
中文描述: TMS370微控制器系列數(shù)據(jù)手冊
文件頁數(shù): 59/78頁
文件大小: 919K
代理商: SE370C742AYYZ
USAGE OF ANTISTATIC SOLUTION N AREAS TO CONTROL THE GENERATION OF STATIC CHARGES
3–5
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
facilities for static-free workstation (continued)
Table 1. General Grounding Requirements
TREATED WITH ANTI-STATIC
SOLUTION OR MADE OF
CONDUCTIVE MATERIAL
GROUNDED TO
COMMON POINT
STATIC DISSIPATIVE
MATERIAL
Handling equipment/handtools
X
X
Metal parts of fixtures and tools/storage racks
X
X
X
Soldering irons/baths
X
Table tops/floor mats
X
X
X
Personnel
Using a wrist strap with 1 M
±
10% resistor
X
usage of antistatic solution in areas to control the generation of static charges
The use of antistatic chemicals (antistats) may be a supplemental part of an overall organized ESD program.
Any antistatic chemical application must be considered as a means to reduce or eliminate static charge
generation on nonconductive materials in the manufacturing or storage areas.
The application of any antistatic chemical in a clean room of class 10,000 or less cannot be permitted.
Accordingly, any user of antistatic solutions must consider the following precautions:
Antistatic spray or solutions in any form cannot be applied to energized electrical parts, assemblies, panels,
or equipment.
Antistatic chemical applications cannot be performed in any area when bare chips, raw parts, packages,
and/or personnel are exposed to spray mists and evaporation vapors.
The need for initial application and frequency of reapplication can be established only through routing
electrostatic voltage measurements using an electrostatic voltmeter. The following durability schedule is a
reasonable expectation.
Soft surfaces (carpet, fabric seats, foam padding, etc.): each six months or after cleaning, by spraying.
Hard abused surfaces (floor, table tops, tools, etc.): each week (or day for heavy use) and after cleaning,
by wiping or mopping.
Hard unabused surfaces (cabinets, walls, fixtures, etc.): each six months or annually and after cleaning,
by wiping or spraying.
Company-furnished and maintained clothing and smocks: after each cleaning, by spraying or adding
antistatic concentrate to final rinse water when cleaned.
The use of antistatic chemicals, their application, and compliance with all appropriate specifications,
precautions, and requirements must be the responsibility of the area supervisor where antistatic chemicals are
used.
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