QF1.4-U0200

The QF1.4-U0200 is designed as crystal fiflter.

It has three applications. The first one is 6 pol filter. The next one is i.f.- filter. The last one is it would be used in mobile and stationary transceivers. That are all the main applications.

Some limiting values have been concluded into several points as follow. The first one is about its center frequency which would be 1.4 MHz. The next one is about its insertion loss which would be less than 5.0 dB. The next one is about its pass band at 4.0 dB which would be from +0.5 to 2.5kHz. The next one is about its ripple in pass band at fo from +0.8 to 2 kHz which would be less than 3.0dB. The next one is about its stop band attenuation which would be larger than 10dB and at fo -0.7 kHz and fo +5 kHz it would be larger than 45. The next one is about its alternate attenuation which would be larger than 45dB except spurious. The next one is about its terminating impedance Z which means R1 || C1 would be 1000 || 75 ohm/pF and R2 || C2 would be 1000 || 75 ohm/pF. The next one is about its operating temperature range which would be from -10 to +65°C. That are all the main specifications above.

Also some introduction about its pin connection. The first one is about its pin 1 which would be input. The next one is about its pin 2 which would be ground input. The next one is about its pin 3 which would be output. The next one is about its pin 4 which would be ground-output. That are all the important specifications above. And so on. If you have any question or suggestion or want know more information please contact us for details.