WMSIC Electronic Components

Sunlord SDFL1608LR82KTF

ModelSDFL1608LR82KTF
Package0603
BrandSUNLORD
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Sunlord SDFL1608LR82KTF
Type
SUNLORD
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUNLORD
Electronic Component
SDFL1608LR82KTF
Electronic Component
1
Package
0603
Electronic Component
SMD Inductor
Electronic Component
±10%
Electronic Component
0.027g
Inductor
820nH
Electronic Component
1
Factor
15@25MHz
Electronic Component
BM0258491060
Current
35mA
Frequency
85MHz
Resistor(DCR)
2.1Ω
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.

SDFL1608LR82KTF 产品概述

SDFL1608LR82KTF 为顺络(Sunlord)生产的一款贴片高Q小电感器,封装为 0603(1608 公制),标称电感值 820 nH,公差 ±10%,额定直流电流 35 mA,直流电阻 (DCR) 2.1 Ω,品质因数 Q = 15(25 MHz),自谐振频率(SRF)约 85 MHz。该器件以体积小、适用于高频滤波与阻抗匹配的特性为主,常用于 RF/IF 级、滤波网络及高频信号链路的去耦和谐振电路。

一、主要电气参数(概览)

  • 电感值:820 nH ±10%
  • 额定电流:35 mA(直流,通过该电流时应避免磁芯磁化与过热)
  • 直流电阻(DCR):2.1 Ω(典型)
  • 品质因数:Q = 15 @ 25 MHz(小信号测量条件下)
  • 自谐振频率(SRF):85 MHz(器件在该频率附近阻抗峰值后将趋于电容性)
  • 封装:0603(公制 1608)表面贴装

二、性能解析与使用建议

  • 工作频段与 SRF:额定 SRF ≈ 85 MHz,器件在低于 SRF 的频率区可表现为感性元件,最佳使用频段一般在几十 kHz 到几十 MHz(尤其在 25 MHz 附近表现为较高 Q)。超过 SRF 后器件阻抗转为容性,应避免在高于 SRF 的电路中当感性元件使用。
  • 感抗举例:在 25 MHz 时的感抗 XL = 2πfL ≈ 2π × 25e6 × 820e-9 ≈ 129 Ω,配合 Q=15 表明损耗较低,适合谐振或选择性滤波用途。
  • 电流与功耗:额定 35 mA 意味着该器件不适合作为大电流电源滤波元件;在最大额定电流下的直流压降约为 0.0735 V,功耗约 2.6 mW(I^2·R),应避免长期超过额定电流以防磁饱和与发热。
  • DCR 较高:2.1 Ω 的 DCR 相对较大,说明在直流偏置或低频串联应用中会带来明显的压降与功耗,适合高阻抗路径或射频应用而非低阻抗电源回路。

三、典型应用场景

  • 高频滤波(RF/IF 滤波器的串联/并联电感)
  • 阻抗匹配与谐振回路(天线匹配、频道选择)
  • EMI/EMC 高频抑制(对高频干扰有选择性阻抗)
  • 高频小信号路径的阻抗调节与隔离
    注:不推荐用于电源线大电流滤波或作为功率电感使用。

四、PCB 布局与焊接建议

  • 焊盘与封装:0603 封装(1608)要求对应 PCB 焊盘尺寸与过孔布局,保持焊盘间距与制造商推荐的回流焊工艺兼容。
  • 走线与回路:尽量缩短与电感连接的走线长度,避免形成不必要的环路面积,以降低寄生电感与 EMI。
  • 接地与屏蔽:若用于射频路径,周围地面平稳有助于稳定工作环境;避免在电感附近放置强磁场元件。
  • 焊接工艺:支持常规回流焊温度曲线(请参考供应商的焊接说明),避免重复高温循环导致性能退化。

五、可靠性与测量注意

  • 测量条件:品质因数 Q、感值等参数通常在小信号条件与特定频率下测量(例如 25 MHz);大电流与偏置会改变有效电感与 Q。
  • 温度与老化:不同材料和工艺会对温度稳定性和长期漂移有影响,如对温度系数有严格要求应向厂方索取相应的温度特性数据。
  • 存储与防护:避免机械冲击与过度弯折;遵循贴片元件的防潮等级及回流前的烘箱处理要求(若为防潮包装则在规定时间内使用)。

六、选型与替代注意事项

  • 若电路要求更高额定电流或更低 DCR,应考虑封装更大的电感或专用功率电感;若工作频率远高于 85 MHz,则需选择 SRF 更高的器件。
  • 在需要更高 Q 值的窄带滤波或谐振应用,可比较同类 0603/0805 尺寸中 Q 值更高的型号。
  • 订购时确认物料编号、包装形式(卷盘数量)、RoHS 与其他认证要求。

SDFL1608LR82KTF 适合用于对体积敏感但需高频性能的射频与滤波电路场合。若需要更详细的温度特性、频率响应曲线或焊接工艺文件,请联系顺络(Sunlord)或供应商获取完整数据手册与推荐焊接/封装信息。

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