QF1.4-L0235

The QF1.4-L0235 is designed as crystal fiflter.

QF1.4-L0235 has three applications. The first one is 10 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 of QF1.4-L0235 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 4.0 dB. The next one is about its pass band at 4.0 dB which would be from -2.7 kHz to -0.35 kHz. The next one is about its ripple in pass band at fo 2.3 from -0.6 kHz which would be less than 2.0 dB. The next one is about its stop band attenuation at fo which would be larger than 20 dB and at fo - 3.1 kHz it would be larger than 35 dB and at fo +0.15 kHz it would be larger than 40 dB and at fo -3.4 kHz and fo+0.4 kHz it would be larger than 60 dB. The next one is about its alternate attenuation which would be larger than 60 dB except spurious. The next one is about its terminating impedance Z which means R1 || C1 would be 1000 || 15 ohm/pF and R2 || C2 would be 1000 || 15 ohm/pF. The next one is about its operating temperature range which would be from -15 to +55°C.

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 to know more information about it please contact us for details.