I. Product Features and Description

The dielectric low-pass filter (also known as ceramic low-pass filter) is characterized by allowing signals below the cutoff frequency to pass normally, while signals above a certain frequency are significantly attenuated. The working principle of the ceramic low-pass filter is based on the properties of ceramic materials and resonance phenomena. By selecting appropriate ceramic materials and designing reasonable resonant cavities, it achieves filtering of specific signals. The function of the ceramic filter is to filter out noise and allow useful signals to pass, with the purpose of separating currents of different frequencies. Ceramic low-pass filters are mainly used in frequency-selective networks to achieve the separation of currents with different frequencies.

Ceramic low-pass filters feature a wide frequency range (300MHz ~ 10GHz), high suppression, low insertion loss, high power handling, high Q value, excellent amplitude/frequency and phase/frequency characteristics, high signal-to-noise ratio, good thermal stability, low temperature coefficient, surface mount design, small size, light weight, convenient soldering, 50Ω input/output impedance matching for easy cascading, stable and reliable performance across the full temperature range, and suitability for use in environments ranging from -55℃ to +85℃.

II. Product Models and Parameters

III. Precautions and Applications

Ceramic low-pass filters are widely used in base stations, RF and microwave applications, repeaters, mobile communications, and consumer electronics. During use, ensure that the grounding terminal is properly grounded, as poor grounding may affect out-of-band suppression and flatness indicators. When soldering, use the recommended temperature—avoid excessively high temperatures or prolonged soldering times. If reflow soldering is used, it is recommended to follow the suggested temperature profile; wave soldering is not advisable. The product should be stored in a warehouse with an ambient temperature of -10℃ to 40℃, relative humidity not exceeding 80%, and free from acidic, alkaline, or other harmful gases. Avoid immersion during cleaning; it is recommended to wipe with alcohol.

Our company offers a variety of sizes of ceramic low-pass filters (dielectric low-pass filters) for users to choose from. Custom ceramic low-pass filters, ceramic high-pass filters, ceramic band-pass filters, and ceramic band-stop filters ranging from 300MHz to 10GHz can be customized. The design is flexible. Since the various indicators of microwave components are interrelated and affect each other, users need to clearly specify indicator requirements before customization. Once the product is manufactured, changes cannot be made.