SAW FILTER

HD F4521

www.shoulder.cn Tel:0755-82916880 Fax:0755-82916881 E-mail:info@shoulder.cn

Page 9 of 13

5.Environmental Performance Characteristics

Item

Condition

Specifications

High

temperature

The specimen shall be store at a temperature of

85±2℃ for 96±4h. Then it shall be subjected to

standard atmospheric conditions for 1h, after

which measurement shall be made within 1h.

Low

temperature

The specimen shall be store at a temperature of

-30±3℃ for 96±4h. Then it shall be subjected to

standard atmospheric conditions for 1h, after

which measurement shall be made within 1h.

Humidity

The specimen shall be store at a temperature of

40±2℃ with relative humidity of 90% to 96%

for 96

±4h. Then it shall be subjected to standard

atmospheric conditions for 1h, after which

measurement shall be made within 1h.

Thermal

shock

The specimen shall be subjected to 8 continuous

cycles each as shown below. Then it shall be

subjected to standard atmospheric conditions for

1h, after which measurement shall be made

within 1h.

Temperature

Duration

1

+25℃=>-40℃

0.5h

2

-40℃

4h

3

-40℃=>+85℃

2h

4

+85℃

4h

5

+85℃=>+25℃

0.5h

6

+25℃

1h

Resistance to

Soldering

heat

Reflow soldering method

Peak: 255 ±5 ℃, 220 ±5℃, 40s

At electrode temperature of the specimen.

Mechanical

characteristics and

specifications

in

electrical

characteristics shall

be satisfied. There

shall

be

no

excessive change in

appearance.