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Product Detailed Parameters
- Description：LTCC LOW PASS FILTER, DC - 1800
- Series：LFCN
- Mfr：Mini-Circuits
- Package：Tape & Reel (TR),Cut Tape (CT)
- Frequency：2.125GHz
- Impedance：50Ohm
- Bandwidth：-
- Insertion Loss：1dB
- Filter Type：Low Pass
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.126" L x 0.063" W (3.20mm x 1.60mm)
- Height (Max)：0.037" (0.94mm)
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Overview
The LFCN-1800D+ is a low-pass ceramic filter manufactured by Mini-Circuits, designed for surface-mount applications. It features a cutoff frequency of 2.125 GHz and operates with a nominal impedance of 50 Ohms. The component utilizes LTCC technology and is housed in a compact 4-SMD, no-lead package measuring 3.20mm x 1.60mm x 0.94mm. Typical insertion loss is specified at 1 dB. The device complies with RoHS3 standards and carries an EAR99 classification.
Feature Summary
- Utilizes Low-Temperature Co-fired Ceramic (LTCC) construction for reliable RF filtering performance.
- Designed for surface-mount installation to facilitate automated assembly processes.
- Provides DC isolation with minimum resistance to ground of 100 Mohms.
Applications
- RF signal conditioning in wireless communication systems
- Harmonic suppression in microwave circuits
- Interstage filtering in IF and RF front-end modules
Procurement Notes
Verify the specific suffix against official Mini-Circuits documentation to ensure correct electrical characteristics. Confirm that the required packaging format aligns with available distribution options. Check current lead times as manufacturing schedules may vary. Ensure compatibility with standard SMD reflow profiles during integration.
Selection Notes
Select this component when a sharp cutoff near 1.8 GHz is required in a minimal footprint. The 50 Ohm impedance matches standard RF transmission lines. Consider the 4-SMD package size constraints relative to the PCB layout. Verify thermal management requirements for the operating environment.
Part Context
This part belongs to the LFCN series of LTCC low-pass filters from Mini-Circuits. The series offers various cutoff frequencies tailored for different RF bands. The LFCN-1800D+ specifically targets applications requiring attenuation above 1.8 GHz while maintaining low loss in the passband.
Replacement Considerations
Consult Mini-Circuits official substitution guides for verified equivalents. Cross-reference pinout and electrical specifications before replacing. Ensure mechanical dimensions match the existing footprint.
