參數(shù)資料
型號(hào)： TMP91FY12AF
廠商： Toshiba Corporation
元件分類： 微控制器
英文描述： Quality And Reliability Assurance / Handling Precautions
中文描述： 質(zhì)量與可靠性保證/操作注意事項(xiàng)
文件頁(yè)數(shù)： 28/48頁(yè)
文件大小： 390K
代理商： TMP91FY12AF
Quality and Reliability Assurance / Handling Precautions
030901
QUA-28
2002-02-20
4 General Safety Precautions and Usage Considerations
This section is designed to help you gain a better understanding of semiconductor devices,
so as to ensure the safety, quality and reliability of the devices which you incorporate into
your designs.
4.1
From Incoming to Shipping
4.1.1 Electrostatic Discharge (ESD)
When handling individual devices (which are not yet
mounted on a printed circuit board), be sure that the
environment is protected against electrostatic electricity.
Operators should wear anti-static clothing, and containers
and other objects which come into direct contact with devices
should be made of anti-static materials and should be
grounded to earth via an 0.5- to 1.0-M
protective resistor.
Please follow the precautions described below; this is particularly important
for devices which are marked “Be careful of static.”.
4.1.1.1 Work Environment
(1)
When humidity in the working environment decreases, the human
body and other insulators can easily become charged with static
electricity due to friction. Maintain the recommended humidity of
40% to 60% in the work environment, while also taking into account
the fact that moisture-proof-packed products may absorb moisture
after unpacking.
(2)
Be sure that all equipment, jigs and tools in the working area are
grounded to earth.
(3)
Place a conductive mat over the floor of the work area, or take other
appropriate measures, so that the floor surface is protected against
static electricity and is grounded to earth. The surface resistivity
should be 10
4
to 10
8
/sq and the resistance between surface and
ground, 7.5
×
10
5
to 10
8
.
Cover the workbench surface also with a conductive mat (with a
surface resistivity of 10
4
to 10
8
/sq, for a resistance between
surface and ground of 7.5
×
10
5
to 10
8
). The purpose of this is to
disperse static electricity on the surface (through resistive
components) and ground it to earth. Workbench surfaces must not
be constructed of low-resistance metallic materials that allow rapid
static discharge when a charged device touches them directly.
(4)
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