Ceramic Filters

Category Introduction

Ceramic filter products provide a frequency dependent characteristic useful for suppressing or selecting signal content over some range of frequencies. Some devices use the piezoelectric properties of a ceramic material to achieve this end and are effectively electro-mechanical systems, whereas others use multi-layer construction techniques, incorporating inductive elements to create an integrated inductor-capacitor (LC) style filter.

Product List

21 Items

Mfr Part #	Quantity Available	UnitPrice	Packaging	Product Status	Frequency	Impedance	Bandwidth	Insertion Loss	Filter Type	Mounting Type	Package / Case	Size / Dimension	Height (Max)
LFCN-1000+ LTCC LOW PASS FILTER, DC - 1000 Mini-Circuits	231	$3.18	Tape & Reel (TR)	Active	1GHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-320+ LTCC LOW PASS FILTER, DC - 320 M Mini-Circuits	23	$5.70	Tape & Reel (TR)	Active	460MHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCG-1000+ LTCC LOW PASS FILTER, DC - 1000 Mini-Circuits	144	$6.54	Tape & Reel (TR)	Active	1.37GHz	50Ohm	-	1.8dB	Low Pass	Surface Mount	0805 (2012 Metric), 8 PC Pad	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.037" (0.95mm)
LFCN-1200+ LTCC LOW PASS FILTER, DC - 1200 Mini-Circuits	247	$3.17	Tape & Reel (TR)	Active	1.2GHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-800+ LTCC LOW PASS FILTER, DC - 800 M Mini-Circuits	78	$3.17	Tape & Reel (TR)	Active	990MHz	50Ohm	-	1.3dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1700+ LTCC LOW PASS FILTER, DC - 1700 Mini-Circuits	300	$3.22	Tape & Reel (TR)	Active	2.05GHz	50Ohm	-	1.2dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
HFCN-440+ LTCC HIGH PASS FILTER, 500 - 250 Mini-Circuits	3	$4.61	Tape & Reel (TR)	Active	1.5GHz Center	50Ohm	2 GHz	-	High Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1000D+ LTCC LOW PASS FILTER, DC - 1000 Mini-Circuits	158	$4.55	Tape & Reel (TR)	Active	1.3GHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1800+ LTCC LOW PASS FILTER, DC - 1800 Mini-Circuits	116	$5.76	Tape & Reel (TR)	Active	2.125GHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-490+ LTCC LOW PASS FILTER, DC - 490 M Mini-Circuits	156	$5.88	Tape & Reel (TR)	Active	490MHz	50Ohm	-	1.2dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1800D+ LTCC LOW PASS FILTER, DC - 1800 Mini-Circuits	63	$6.78	Tape & Reel (TR)	Active	2.125GHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1200D+ LTCC LOW PASS FILTER, DC - 1200 Mini-Circuits	139	$4.58	Tape & Reel (TR)	Active	1.53GHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
HFCN-4400+ LTCC HIGH PASS FILTER, 5000 - 10 Mini-Circuits	140	$5.66	Tape & Reel (TR)	Active	7.55GHz Center	50Ohm	5.1 GHz	-	High Pass	Surface Mount	6-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.042" (1.07mm)
LFCG-3000+ LTCC LOW PASS FILTER, DC - 3000 Mini-Circuits	18	$6.63	Tape & Reel (TR)	Active	3.46GHz	50Ohm	-	2.2dB	Low Pass	Surface Mount	0805 (2012 Metric), 8 PC Pad	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.037" (0.95mm)
LFCN-320D+ LTCC LOW PASS FILTER, DC - 320 M Mini-Circuits	83	$6.85	Tape & Reel (TR)	Active	460MHz	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1700D+ LTCC LOW PASS FILTER, DC - 1700 Mini-Circuits	67	$4.53	Tape & Reel (TR)	Active	2.05GHz Cut Off	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-490D+ LTCC LOW PASS FILTER, DC - 490 M Mini-Circuits	127	$6.77	Tape & Reel (TR)	Active	650MHz Cut Off	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
HFCN-4400D+ LTCC HIGH PASS FILTER, 5000 - 10 Mini-Circuits	38	$7.27	Tape & Reel (TR)	Active	7.55GHz Center	50Ohm	5.1 GHz	-	High Pass	Surface Mount	6-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.042" (1.07mm)
LFCN-800D+ LTCC LOW PASS FILTER, DC - 800 M Mini-Circuits	35	$1.80	Tape & Reel (TR)	Active	990MHz Cut Off	50Ohm	-	1.3dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)
LFCN-1800D-1+ LOW PASS FILTER, DC - 1800 MHZ, Mini-Circuits	127	$2.77	Tape & Reel (TR)	Active	2.125GHz Cut Off	50Ohm	-	1dB	Low Pass	Surface Mount	4-SMD, No Lead	0.126" L x 0.063" W (3.20mm x 1.60mm)	0.037" (0.94mm)

About Ceramic Filters

What are Ceramic Filters?

Ceramic Filters

Ceramic filters are specialized components used in electronic circuits to select or reject specific frequency ranges. They operate based on the piezoelectric properties of ceramic materials, which allow them to vibrate at precise frequencies when subjected to an electrical signal. These filters are primarily used to pass desired frequencies while blocking unwanted ones, ensuring signal clarity and integrity in various applications. Their construction involves a ceramic substrate that is often coated with metallic electrodes, forming a resonant circuit that can be finely tuned to specific frequencies.

Types of Ceramic Filters

Bandpass Ceramic Filters

Bandpass ceramic filters are designed to allow signals within a certain frequency range to pass through while attenuating frequencies outside this range. They are commonly used in communication systems to isolate specific channels or frequencies, ensuring that only the desired signals are processed.

Low-Pass Ceramic Filters

Low-pass ceramic filters permit signals below a certain cutoff frequency to pass while attenuating higher frequencies. These filters are often employed in audio applications to eliminate high-frequency noise and in RF applications to prevent interference from higher frequency signals.

High-Pass Ceramic Filters

High-pass ceramic filters allow signals above a certain frequency to pass while blocking lower frequencies. They are useful in applications where it is necessary to eliminate low-frequency noise or interference, such as in radio receivers and audio equipment.

Notch Ceramic Filters

Notch ceramic filters are designed to reject a specific narrow band of frequencies while allowing others to pass. These are particularly useful in applications where it is necessary to eliminate a specific interfering signal, such as in wireless communication systems.

How to choose Ceramic Filters?

When selecting ceramic filters, several key parameters must be considered:

Frequency Range: Determine the specific frequency range that needs to be filtered.
Insertion Loss: Evaluate the acceptable level of signal loss through the filter.
Bandwidth: Consider the width of the frequency band that the filter should pass.
Impedance: Ensure compatibility with the system's impedance to prevent signal reflection.
Temperature Stability: Assess the filter's performance across the expected temperature range.

To evaluate product quality and reliability, consider the manufacturer's reputation, customer reviews, and any available performance certifications. Environmental factors such as humidity, temperature, and mechanical stress should also be considered, as they can affect filter performance. Proper installation is crucial, ensuring that the filter is securely mounted and electrically connected to minimize interference and signal loss.

Applications of Ceramic Filters

Telecommunications

In telecommunications, ceramic filters are used to separate and process different frequency channels, ensuring clear and reliable communication. They are integral in mobile phones, base stations, and satellite communication systems.

Consumer Electronics

Ceramic filters are found in various consumer electronics, such as televisions and radios, where they help in tuning and filtering specific channels, providing users with clear audio and video signals.

Automotive Industry

In the automotive industry, ceramic filters are used in vehicle infotainment systems and communication modules to ensure interference-free operation of radio and navigation systems.

Medical Devices

Medical devices, such as diagnostic equipment and patient monitoring systems, utilize ceramic filters to ensure accurate signal processing and eliminate unwanted noise from critical measurements.

Industrial Automation

In industrial automation, ceramic filters are employed in control systems and communication networks to maintain signal integrity and prevent interference from industrial machinery and equipment.