（Environmental）

Step

2

15± 3

4

15± 3

Characteristics

Test Methods

Specifications

High Temperature

Storage/

Dry Heat

The specimen shall be subjected to 125±2 ℃ for 1000 hours in a

thermostatic bath without load and then stored at room temperature and

humidity for 1 to 2 hours. Thereafter, the change of Vc shall be measured.

△VcmA/VcmA≦±5%

Damp Heat/

Humidity

(Steady State)

The specimen shall be subjected to 40 ± 2 ℃, 90 to 95 %RH for 1000

hours without load and then stored at room temperature and humidity for

one to two hours. Thereafter, the change of Vc shall be measured.

Temperature

Cycle

The temperature cycle shown below shall be repeated five times and then

stored at room temperature and humidity for one to two hours. The change

of Vc and mechanical damage shall be examined.

Temperature(℃)

Period (minutes)

1

-40± 3

30± 3

Room temperature

3

125± 2

30± 3

Room temperature

High Temperature

Load/

Dry Heat Load

After being continuously applied the Maximum Allowable Voltage at 85

± 2℃ for 1000 hours. The specimen shall be stored at room temperature

and humidity for one to two hours Thereafter, the change of Vc shall be

measured.

Low Temperature

Storage/Cold

The specimen shall be subjected to -40±2 ℃ without load for 1000 hours

and then stored at room temperature for one to two hours. Thereafter, the

change of Vc shall be measured.

△VcmA/VcmA≦±5%

△VcmA/VcmA≦±10%

Damp Heat Load/

Humidity Load

The specimen shall be subjected to 40±2 ℃, 90 to 95 %RH and the

Maximum Allowable Voltage for 1000 hours and then stored at room

temperature and humidity for one to two hours. Thereafter, the change of

Vc shall be measured.

△VcmA/VcmA≦±10%

TYEE Products Inc.

http://www.tyeeusa.com/

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