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Crystal Filters

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.

Crystal Filters

Available Parts 9

Part RoHS Manufacturer Description 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-38SMF45A15 by Ecs International

ECS-38SMF45A15

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; Minimum Operating Temperature: -30 Cel; Height: 1 mm; No. of Terminals: 8; Maximum Attenuation Frequency (± Δf): 13 kHz;

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

ECS-10.7-15A by Ecs International

ECS-10.7-15A

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; Maximum Operating Temperature: 70 Cel; Mounting Type: THROUGH HOLE MOUNT; Center/Cutoff Frequency (fo/fc): 10.7 MHz; No. of Terminals: 3;

CRYSTAL FILTER

MONOLITHIC

1

THROUGH HOLE MOUNT

3

3000 OHM//2

L11.1XB4.7XH11.2 (mm)/L0.437XB0.185XH0.441 (inch)

70 Cel

25 dB

18 kHz

-20 Cel

11.2 mm

4.7

7.5 kHz

2 dB

2 POLE

10.7 MHz

11.1 mm

ECS-10.7-7.5A by Ecs International

ECS-10.7-7.5A

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; Maximum Operating Temperature: 70 Cel; Width (mm): 4.7; Maximum Attenuation Frequency (± Δf): 20 kHz; Attenuation At Maximum Frequency: 18 dB;

CRYSTAL FILTER

MONOLITHIC

1

THROUGH HOLE MOUNT

3

1800 OHM//5

L11.1XB4.7XH11.2 (mm)/L0.437XB0.185XH0.441 (inch)

70 Cel

18 dB

20 kHz

-20 Cel

11.2 mm

4.7

3.75 kHz

1.5 dB

2 POLE

10.7 MHz

11.1 mm

10.7E by Itti

10.7E

Itti

CRYSTAL FILTER;

CRYSTAL FILTER

MQF70.0-1500/03 by Microchip Technology

MQF70.0-1500/03

Microchip Technology

CRYSTAL FILTER; Construction: MONOLITHIC; Maximum Operating Temperature: 70 Cel; Length: 38.4 mm; No. of Functions: 1; Bandwidth (± Δf): 7.5 kHz;

CRYSTAL FILTER

MONOLITHIC

1

THROUGH HOLE MOUNT

50 OHM

L38.4XB18.2XH13 (mm)

70 Cel

90 dB

100 kHz

-20 Cel

60 dB

30 kHz

Tin/Silver (Sn/Ag)

13 mm

7.5 kHz

6 dB

6 POLE

70 MHz

e2

38.4 mm

ECS-21K7.5B by Ecs International

ECS-21K7.5B

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; Maximum Insertion Loss: 2.5 dB; Minimum Operating Temperature: -20 Cel; Maximum Attenuation Frequency (± Δf): 35 kHz; Mounting Type: THROUGH HOLE MOUNT;

CRYSTAL FILTER

MONOLITHIC

1

THROUGH HOLE MOUNT

3

850 OHM//5

L7.3XB2.5XH8.0 (mm)/L0.287XB0.098XH0.315 (inch)

70 Cel

12.5 dB

35 kHz

-20 Cel

8 mm

2.5

3.75 kHz

2.5 dB

4 POLE

21.4 MHz

7.3 mm

ECS-10.7-30B by Ecs International

ECS-10.7-30B

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; JESD-609 Code: e4; I/O Impedance: 5500 OHM//-1; No. of Functions: 1; Mounting Type: THROUGH HOLE MOUNT;

CRYSTAL FILTER

MONOLITHIC

1

THROUGH HOLE MOUNT

3

5500 OHM//-1

L11.1XB4.7XH11.2 (mm)/L0.437XB0.185XH0.441 (inch)

70 Cel

40 dB

30 kHz

-20 Cel

Gold (Au) - with Nickel (Ni) barrier

11.2 mm

4.7

15 kHz

2.5 dB

4 POLE

10.7 MHz

e4

11.1 mm

ECS-21K30B by Ecs International

ECS-21K30B

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; Minimum Operating Temperature: -20 Cel; Additional Features: 4 POLE; Center/Cutoff Frequency (fo/fc): 21.4 MHz; Length: 7.3 mm;

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-96SMF21A30 by Ecs International

ECS-96SMF21A30

Ecs International

CRYSTAL FILTER; Construction: MONOLITHIC; No. of Functions: 1; Dimensions: L7.0XB5.0XH1.5 (mm)/L0.276XB0.197XH0.059 (inch); Center/Cutoff Frequency (fo/fc): 21.4 MHz; Maximum Attenuation Frequency (± Δf): 15 kHz;

CRYSTAL FILTER

MONOLITHIC

1

SURFACE MOUNT

6

2000 OHM//0.5

L7.0XB5.0XH1.5 (mm)/L0.276XB0.197XH0.059 (inch)

80 Cel

45 dB

15 kHz

-30 Cel

1.5 mm

5.0

15 kHz

2 dB

TAPE AND REEL; 2 POLE

21.4 MHz

7 mm