TMP93CS41F datasheet(33/48 Pages) TOSHIBA

33 / 48 page

Quality and Reliability Assurance / Handling Precautions

030901

QUA-33

2002-02-20

4.2.2

Moisture-Proof Packing

(1)

Moisture-proof packing should be handled with

care. The handling procedure specified for each

packing type should be followed scrupulously. If

the proper procedures are not followed, the quality

and reliability of devices may be degraded. This

section describes general precautions for handling moisture-proof packing.

Since the details may differ from device to device, refer also to the

relevant individual datasheets or databook.

(2)

General precautions

Follow the instructions printed on the device cartons regarding

transportation and storage.

(3)

Do not drop or toss device packing. The laminated aluminum material in

it can be rendered ineffective by rough handling.

(4)

The storage area temperature should be kept within a temperature range

of 5°C to 30°C, and relative humidity should be maintained at 90% (max).

Use devices within 12 months of the date marked on the package seal.

(5)

If the 12-month storage period has expired, or if the 30% humidity

indicator shown in Figure 4.1 is pink when the packing is opened, it may

be advisable, depending on the device and packing type, to back the

devices at high temperature to remove any moisture. Please refer to the

table below. After the pack has been opened, use the devices in a 5

°C to

°C. 60% RH environment and within the effective usage period listed

on the moisture-proof package. If the effective usage period has expired,

or if the packing has been stored in a high-humidity environment, bake

the devices at high temperature.

Packing

Moisture removal

Tray

If the packing bears the “Heatproof” marking or indicates the maximum temperature which it can withstand,

bake at 125

°C for 20 hours. (Some devices require a different procedure.)

Tube

Transfer devices to trays bearing the “Heatproof” marking or indicating the temperature which they can

withstand, or to aluminum tubes before baking at 125

°C for 20 hours.

Tape

Deviced packed on tape cannot be baked and must be used within the effective usage period after

unpacking, as specified on the packing.

When baking devices, protect the devices from static electricity.

Moisture indicators can detect the approximate humidity level at a standard temperature

of 25

°C. 6-point indicators and 3-point indicators are currently in use, but eventually all

indicators will be 3-point indicators.

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