MB91F577CSPMC datasheet(52/163 Pages) CYPRESS

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Document Number: 002-04725 Rev.*A

Page 52 of 163

MB91570 Series

Static Electricity

Because semiconductor devices are particularly susceptible to damage by static electricity, you must take the following precautions:

1. Maintain relative humidity in the working environment between 40% and 70%. Use of an apparatus for ion generation may be

needed to remove electricity.

2. Electrically ground all conveyors, solder vessels, soldering irons and peripheral equipment.

3. Eliminate static body electricity by the use of rings or bracelets connected to ground through high resistance (on the level

of 1 MΩ).

Wearing of conductive clothing and shoes, use of conductive floor mats and other measures to minimize shock loads is

recommended.

4. Ground all fixtures and instruments, or protect with anti-static measures.

5. Avoid the use of styrofoam or other highly static-prone materials for storage of completed board assemblies.

7.3

Precautions for Use Environment

Reliability of semiconductor devices depends on ambient temperature and other conditions as described above.

For reliable performance, do the following:

1. Humidity

Prolonged use in high humidity can lead to leakage in devices as well as printed circuit boards. If high humidity levels are

anticipated, consider anti-humidity processing.

2. Discharge of Static Electricity

When high-voltage charges exist close to semiconductor devices, discharges can cause abnormal operation. In such cases,

use anti-static measures or processing to prevent discharges.

3. Corrosive Gases, Dust, or Oil

Exposure to corrosive gases or contact with dust or oil may lead to chemical reactions that will adversely affect the device. If

you use devices in such conditions, consider ways to prevent such exposure or to protect the devices.

4. Radiation, Including Cosmic Radiation

Most devices are not designed for environments involving exposure to radiation or cosmic radiation. Users should provide

shielding as appropriate.

5. Smoke, Flame

CAUTION: Plastic molded devices are flammable, and therefore should not be used near combustible substances. If devices

begin to smoke or burn, there is danger of the release of toxic gases.

Customers considering the use of Cypress products in other special environmental conditions should consult with sales

representatives.

MB91F577CSPMC 数据表(PDF) 52 Page - Cypress Semiconductor

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