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Mini-Circuits LFCG-3800+
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Mini-Circuits LFCG-3800+
- Type
- MINI-CIRCUITS
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MINI-CIRCUITS
- Electronic Component
- LFCG-3800+
- Electronic Component
- 1
- Package
- SMD-8P,1.2x2mm
- Electronic Component
- RFFilter
- Electronic Component
- 40dB；42dB；48dB；20dB
- Electronic Component
- 0.04g
- Electronic Component
- 50Ω
- Electronic Component
- 1
- Electronic Component
- BM0265000512
- Operating Temperature
- 55℃~+100℃
- Frequency
- 5GHz
- Electronic Component
- 1.8dB
- Filter Type
- Electronic Component
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LFCG-3800+ 产品概述
一、产品简介
LFCG-3800+ 是 Mini-Circuits 提供的一款小体积表面贴装低通滤波器，专为 50Ω 射频链路中的高频信号整形与带外抑制设计。器件封装为 SMD-8P，尺寸仅 1.2 × 2 mm，符合 RoHS 要求，工作温度范围宽 (-55℃ 至 +100℃)，适用于工业级与商业级环境。典型应用包括前端滤波、谐波抑制、抗混叠和无线系统的带外干扰抑制等。
二、主要电气参数
- 滤波器类型：低通（Low Pass）
- 截止频率（-3 dB 点，典型）：5 GHz
- 系统阻抗：50 Ω（设计匹配）
- 插入损耗：典型 1.3 dB（通带内）
- 环境温度范围：-55℃ ~ +100℃
- RoHS 符合性：符合无铅环保标准
上述参数说明该器件在 50 Ω 系统中能提供较低的通带损耗和可靠的带外抑制性能，适合需要在高频段保留有用信号同时抑制高频谐波或干扰的场合。
三、应用场景与设计要点
LFCG-3800+ 适用于多种射频与微波系统，典型应用包括：
- 无线通信收发前端（例如对 5 GHz 附近频段进行滤波与谐波抑制）
- 射频功率放大器输出端的带外抑制
- 模数转换前的抗混叠滤波
- 测试测量和信号链路整形，降低互调与噪声出射
设计时的关键建议：
- 保持滤波器与相连器件之间的传输线短且阻抗连续（50 Ω），以保证插入损耗与回波损耗达到标称值。
- 在 PCB 布局上，滤波器底部和附近应有良好接地，必要时在滤波器旁布置过孔将顶层地平面与内层/底层接地相连，以减少寄生并提高带外抑制效果。
- 对于高功率应用，建议评估功率处理能力并在实际工程中验证热散发与温升情况（产品手册中如有功率额定请以厂商数据为准）。
四、封装与可靠性
LFCG-3800+ 采用 SMD-8P 超小型封装，外形尺寸 1.2 × 2 mm，适合高密度贴装与自动化 SMT 生产。器件经 RoHS 认证，材料与工艺满足无铅回流焊的工艺要求。推荐遵循厂商提供的回流曲线与焊盘布局，以保证焊接可靠性与射频性能的一致性。
五、选型及注意事项
- 确认截止频率与系统带宽匹配，若系统工作频段接近截止点，请评估群时延与相位响应对信号完整性的影响。
- 插入损耗 1.3 dB 是典型值，具体损耗会随频率、温度与生产批次有一定浮动，关键应用建议在样机上进行实际测量。
- 在对地或邻近高频器件的布局上应避免造成不必要的耦合，以免影响滤波器的带外抑制效果。
- 若需更详细的 S 参数、功率额定及典型性能曲线，请参考 Mini-Circuits 官方数据手册或联系厂商技术支持以获取完整资料。
总结：LFCG-3800+ 以其小体积、低插损和宽工作温度特性，适合在 50Ω 射频链路中实现高频段的低通滤波与谐波抑制，是无线前端与射频信号整形的可靠选择。
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