LTWC450B/LTWC450C/LTWC450D/LTWC450E/LTWC450F/LTWC450G/LTWC450H/LTWC450I/LTWC450J

Center Frequency f0 (Center of 6dB Bandwidth)

Insertion Loss (At minimum loss point)

Temperature Stability (－20℃～ +80℃ )

±0.5% max

(-25℃ ～ +80℃)

NO.

Item

Measurement condition

Requirement

７－１

Random Drop

Filter shall be measured after 3 times random drops from the height of 30cm on concrete floor

No visible damage and it meet Table 1

７－２

Vibration

Filter shall be measured after being applied vibration of amplitude of 1.5mm with 10-55Hz band of vibration frequency to each of 3 perpendicular directions for 2 hours

No damage and it meet

Table 1.

７－3

Solderability

Lead terminals are immersed in aide solder for

5 sec and then immersed in soldering bath of

230±5℃, for 3±0.5 sec.

At least 95% lead terminals shall be covered with solder.

７－4

Substrate Bending Test

 Apply pressure in the direction of arrow (see Fig. 3)

at a rate of about 0.5mm per second until it reaches a

bend of 3mm and hold for 30 seconds.

It shall meet table 1.

７－5

Adhesion

A static load of 20N to the direction of the arrow (see

Fig. 4) shall be applied on the core of the component

and hold for 10 seconds. Filter shall be soldered

correctly and tightly to PCB.

It shall meet Table 1..

7－6

It shall meet Table 1.

Put on the solder paste on the printed wiring board (pattern is shown in Fig. 5), the samples shall be mounted and soldered under the condition (pattern is shown in Fig. 6), then it shall be subjected to the room atmosphere for

24 hours prior to the measurement.

NO.

Item

Measurement condition

Requirement

8 – 1

Humidity

After being placed in a chamber with 90-95% R.H. at 40±2℃ for 100 hours and then being placed in room temperature for 1 hour, filter shall be measured.

It shall meet Table 1.

8 – 2

Resistance to Solder Heat

Lead terminals are immersed up to 1.5mm from filter’s body in soldering bath of 350±

10℃, for 3±0.5 sec. And then filter shall be

measured after being placed in room temperature for 1 hour.

It shall meet Table 1.

8 – 3

High Temperature

After being placed in a chamber with 80±

2℃,for 100 hours and then being placed in room temperature for 1 hour , filter shall be measured.

It shall meet Table1

8 – 4

 Low Temperature

After being placed in a chamber with -20±

2℃,for 100 hours and then being placed in room temperature for 1 hour, filter shall be measured.

It shall meet Table 1

8 – 5

Heat Shock

It shall meet Table 1

After being kept at room temperature, filter shall be placed at temperature of –55 ℃ , for

30 minutes, then be placed at temperature.

85℃, for 30 minutes. After that returned to

–55℃ again. Repeated above cycle for 5 times. After being kept in room temp. for 1 hour, filter shall be measured

Item

Specification

450 KHz

±2.0 KHz min

±7.0 KHz max

50dB min

2.0dB max

7.0dB max