WMSIC Electronic Components

Sunlord SDFL1608T220KTF

ModelSDFL1608T220KTF
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Sunlord SDFL1608T220KTF
Type
SUNLORD
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SUNLORD
Electronic Component
SDFL1608T220KTF
Electronic Component
1
Package
0603
Electronic Component
SMD Inductor
Electronic Component
±10%
Electronic Component
0.027g
Inductor
22uH
Electronic Component
1
Factor
20@1MHz
Electronic Component
BM0264825691
Current
1mA
Frequency
11MHz
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.

顺络SDFL1608T220KTF贴片电感产品概述

顺络电子(Sunlord)推出的SDFL1608T220KTF是一款针对低功耗、小型化电路设计的贴片电感,凭借紧凑封装、稳定的电气性能及适配中低频段的特性,广泛应用于消费电子、传感器模块等场景。以下从核心参数、性能特性、应用匹配等维度详细介绍。

一、产品核心定位与设计目标

该电感定位于小电流、中低频段的滤波与信号调理,设计目标是在有限的0603封装内实现稳定的22uH电感量,同时控制直流电阻与损耗,适配便携设备的高密度布局需求。不同于大功率电感,其额定电流仅1mA,更适合低功耗电路的辅助滤波(如LDO输出、信号端滤波),而非大电流电源供电。

二、关键电气性能参数详解

2.1 电感值与精度

电感标称值为22uH,精度±10%,即实际电感量范围为19.8uH~24.2uH。该精度满足绝大多数常规滤波电路的需求(如电源纹波抑制、低频信号滤波),无需额外的高精度匹配,降低了电路设计复杂度。

2.2 额定电流与功耗

额定电流1mA是电感在25℃环境下**持续工作且电感量变化不超过±10%**的最大电流。此时直流电阻(DCR)2.1Ω产生的功耗仅为(I^2R = (1mA)^2×2.1Ω = 2.1μW),几乎不影响低功耗电路的整体能效。若电流超过额定值,磁芯可能出现饱和,电感量急剧下降,滤波效果失效。

2.3 直流电阻(DCR)

2.1Ω的DCR是绕组铜线的直流阻抗,直接影响电感的功耗与压降。在小电流场景下,该阻值带来的压降((V=IR=2.1mV))可忽略不计,适合对压降敏感的低电压电路(如3.3V、1.8V系统),避免影响信号完整性。

三、封装与物理特性

3.1 封装规格

采用0603英制封装(对应1608公制),尺寸约为1.6mm×0.8mm×0.8mm(长×宽×高),是贴片电感中最小的封装之一,适配高密度PCB布局,尤其适合便携设备(如智能手环、蓝牙耳机)的小型化设计,可有效节省电路板空间。

3.2 焊接与可靠性

支持SMT回流焊工艺,焊接温度需符合顺络推荐的曲线(峰值温度245℃左右,时间≤10秒),避免高温导致磁芯或绕组损坏。产品符合RoHS标准,无铅环保,适配现代电子设备的环保要求,可通过长期可靠性测试(如温度循环、湿度测试)。

四、品质因数与自谐振特性

4.1 品质因数(Q值)

Q值为20@1MHz,代表电感在1MHz频段的储能能力与损耗之比((Q=2πfL/R_{ac}),(R_{ac})为交流阻抗)。20的Q值意味着该频段内损耗较低,滤波效果较好,适合1MHz以下的信号滤波(如音频、低中频射频),可有效抑制杂波干扰。

4.2 自谐振频率(SRF)

自谐振频率为11MHz,由电感绕组的分布电容与自身电感串联谐振产生。当工作频率低于SRF时,电感呈感性;等于SRF时呈纯阻性;高于SRF时呈容性。因此,该电感的有效工作频段为0~11MHz,不适合GHz级射频电路(如WiFi、5G),需注意应用场景的频率范围匹配。

五、典型应用场景匹配

结合参数特性,SDFL1608T220KTF主要适配以下场景:

  1. 低功耗消费电子:智能手环、蓝牙耳机的电源滤波(如LDO输出滤波)、传感器模块的信号调理(如加速度计、温度传感器的电源端滤波);
  2. 小型家电控制电路:玩具、遥控器的低电流电源滤波、按键信号滤波;
  3. 音频电路:耳机、音箱的低频滤波(20Hz~20kHz频段),提升音频纯净度;
  4. 射频辅助电路:蓝牙低功耗(BLE)的1MHz以下辅助滤波,抑制带外杂波。

六、选型与使用注意事项

  1. 电流限制:严禁超过1mA额定电流,否则电感性能下降,甚至可能因过热损坏;
  2. 频率范围:工作频率需低于11MHz,避免容性效应导致滤波失效;
  3. 布局优化:靠近滤波对象(如LDO输出、信号输入端),减少走线寄生电感,提升滤波效果;
  4. 焊接规范:遵循SMT回流焊标准,避免手工焊接时高温损坏(手工焊接温度建议≤350℃,时间≤3秒);
  5. 精度适配:±10%精度满足常规需求,若需更高精度(如±5%)需选择顺络其他型号(如SDFL1608T220M)。

该电感凭借紧凑封装、低功耗与稳定性能,成为低功耗电路中滤波与信号调理的高性价比选择,尤其适合对尺寸敏感的便携设备设计,可有效平衡性能与成本。

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