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LFCN-1282+
Mini-Circuits
LTCC LOW PASS FILTER, DC - 12800
2205 Pcs New Original In Stock
13.9GHz Low Pass Ceramic Filter 50Ohm 1206 (3216 Metric), 4 PC Pad
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5.0 / 5.0
- (214 Ratings)
LFCN-1282+
Product Overview
9832938
DiGi Electronics Part Number
LFCN-1282+-DGManufacturer
Mini-Circuits
LFCN-1282+
Description
LTCC LOW PASS FILTER, DC - 12800Inventory
2205 Pcs New Original In Stock
13.9GHz Low Pass Ceramic Filter 50Ohm 1206 (3216 Metric), 4 PC Pad
Quantity
Minimum 1
Minimum 1
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LFCN-1282+ Technical Specifications
Category
Ceramic Filters
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Frequency
13.9GHz
Impedance
50Ohm
Insertion Loss
4dB
Filter Type
Low Pass
Mounting Type
Surface Mount
Package / Case
1206 (3216 Metric), 4 PC Pad
Size / Dimension
0.126" L x 0.063" W (3.20mm x 1.60mm)
Height (Max)
0.037" (0.94mm)
Datasheet & Documents
HTML Datasheet
LFCN-1282+-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8548.00.0000
Additional Information
Other Names
3157-LFCN-1282+TR
3157-LFCN-1282+CT
3157-LFCN-1282+DKR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
每次購買都能享受到多樣的產品種類，滿足我的不同需求，服務周到。
Dec 02, 2025
Les délais d’expédition sont respectés à chaque commande, un vrai plaisir.
Dec 02, 2025
I received timely updates on my orders, which was very reassuring.
Dec 02, 2025
Their customer service team is responsive and helpful, making the shopping experience smooth.
Dec 02, 2025
Their proactive support ensures we are always well-equipped.
Dec 02, 2025
Support staff are proactive and extremely helpful.
Dec 02, 2025
DiGi Electronics makes it simple to access quality tech at a reasonable price.
Dec 02, 2025
Order processing and shipping were remarkably fast, making the whole process smooth.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the LFCN-1282+ in a high-frequency RF front-end module operating near 12 GHz?
When integrating the LFCN-1282+ into an RF front-end near 12 GHz, a primary risk is impedance mismatch due to PCB trace discontinuities, which can degrade the filter’s 4 dB insertion loss performance. Since the LFCN-1282+ has a sharp roll-off starting around 13.9 GHz, operating close to its cutoff may allow unwanted harmonic content to approach the passband edge. To mitigate this, ensure strict 50-ohm microstrip layout with controlled dielectric thickness and minimal stubs. Also, place the LFCN-1282+ as close as possible to the source or load to reduce parasitic inductance. Thermal cycling is less of a concern due to its LTCC construction, but verify performance across temperature (-40°C to +85°C) in your specific stack-up using S-parameter simulations.
Can the LFCN-1282+ replace a Murata LFB212H45BG5D540 in a 5G mmWave small cell design, and what are the critical trade-offs?
While both the LFCN-1282+ and Murata LFB212H45BG5D540 are 50-ohm SMD low-pass filters, the LFCN-1282+ offers a higher cutoff frequency (13.9 GHz vs. ~11.5 GHz) and larger footprint (1206 vs. 1005), making direct drop-in replacement risky. The LFCN-1282+ has higher insertion loss (4 dB vs. ~2.5 dB) but better power handling and thermal stability due to LTCC construction. In a 5G small cell, using the LFCN-1282+ may suppress higher-order harmonics more effectively above 12 GHz, but you must redesign the matching network and verify filter response with VNA testing. Always account for group delay variation near band edges when swapping.
How does the insertion loss of 4 dB in the LFCN-1282+ impact system noise figure in a low-power receiver chain?
A 4 dB insertion loss in the LFCN-1282+ directly degrades the receiver’s noise figure by at least 4 dB before amplification, significantly reducing sensitivity in low-power applications. If the LFCN-1282+ is placed before the LNA, this loss dominates the cascaded noise analysis. To compensate, place a low-noise amplifier with sufficient gain and low NF immediately after the filter. For example, using an LNA with NF <1 dB and 20 dB gain post-LFCN-1282+ mitigates most of the penalty. Alternatively, evaluate if a filter with lower insertion loss (e.g., air-core or cavity type) is feasible, though it may not fit the 1206 footprint.
What PCB layout techniques minimize performance variation when mounting the LFCN-1282+ in dense RF assemblies?
To maintain consistent performance with the LFCN-1282+, adhere to strict RF layout practices: use continuous ground planes on the adjacent layer, maintain 3W spacing between the LFCN-1282+ and nearby components to reduce coupling, and avoid routing traces under the 1206 body since it has 4 pad contacts on the bottom. Use symmetrical, short input/output traces with no right-angle bends. Additionally, minimize pad exposure to solder mask misregistration by following IPC-7351 footprint standards. Thermal relief is not needed due to the MSL 1 rating, enabling robust reflow without tombstoning. Verify post-layout with electromagnetic simulation focusing on return loss (S11) near 13.9 GHz.
What reliability concerns should be considered when using the LFCN-1282+ in outdoor telecom infrastructure exposed to wide temperature swings?
The LFCN-1282+ is built with LTCC materials, which offer excellent thermal stability and long-term reliability in harsh environments. However, repeated thermal cycling (-40°C to +85°C or beyond) can induce mechanical stress at solder joints due to CTE mismatch with FR4 boards. Use Pb-free solder alloys with fatigue resistance (e.g., SAC305) and ensure adequate fillet formation during reflow. While the MSL 1 rating prevents moisture-related failures during assembly, prolonged outdoor exposure requires conformal coating to prevent corrosion, especially near coastal sites. Monitor insertion loss drift over time via periodic testing—LTCC drift is minimal (<0.5 dB typical), but contamination on the PCB can alter the effective dielectric constant near the LFCN-1282+.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LFCN-1282+ CAD Models
Mini-Circuits LFCN-1282+ PCB symbols & footprints
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