Crystal Filters
| Part | RoHS | Manufacturer | Filter Type | Construction | No. of Functions | Mounting Type | No. of Terminals | I/O Impedance | Dimensions | Maximum Operating Temperature | Attenuation At Maximum Frequency | Maximum Attenuation Frequency (± Δf) | Minimum Operating Temperature | Attenuation At Minimum Frequency | Minimum Attenuation Frequency (± Δf) | Terminal Finish | Height | Width (mm) | Bandwidth (± Δf) | Maximum Insertion Loss | Additional Features | Center/Cutoff Frequency (fo/fc) | JESD-609 Code | Length |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Ecs International |
CRYSTAL FILTER |
MONOLITHIC |
1 |
THROUGH HOLE MOUNT |
3 |
1800 OHM//0.5 |
L7.3XB2.5XH8.0 (mm)/L0.287XB0.098XH0.315 (inch) |
70 Cel |
50 dB |
40 kHz |
-20 Cel |
8 mm |
2.5 |
15 kHz |
2 dB |
4 POLE |
21.4 MHz |
7.3 mm |
|||||
|
|
Ecs International |
CRYSTAL FILTER |
MONOLITHIC |
1 |
SURFACE MOUNT |
8 |
560 OHM//6 |
L3.8XB3.8XH1.0 (mm)/L0.15XB0.15XH0.039 (inch) |
80 Cel |
25 dB |
13 kHz |
-30 Cel |
1 mm |
3.8 |
7.5 kHz |
2 dB |
TAPE AND REEL; 2 POLE |
45 MHz |
3.8 mm |
Crystal filters are electronic filters that are used in RF and microwave communication systems to selectively filter out unwanted frequencies from a signal. They are designed to provide a high level of selectivity and precision in filtering, making them ideal for use in applications where accurate frequency response is critical.
Crystal filters use a quartz crystal resonator to selectively filter out specific frequencies from a signal. The quartz crystal is typically cut and polished to resonate at a specific frequency or range of frequencies. When a signal is applied to the crystal, it vibrates at its resonant frequency and filters out all other frequencies.
Crystal filters can be designed as band-pass filters, which allow only a specific range of frequencies to pass through, or as band-stop filters, which block a specific range of frequencies. They can also be designed with multiple crystals, which can increase the level of selectivity and precision in filtering.
Crystal filters are commonly used in a variety of RF and microwave communication systems, including radios, satellite communication systems, and radar systems. They are also used in scientific research applications, such as particle accelerators and radio telescopes.