Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
cjiang FHD4020S-8R2MT FHD4020S
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FHD4020S-8R2MT
- Type
- CJIANG
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FHD4020S-8R2MT
- Electronic Component
- 1
- Package
- SMD,4x4mm
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.245g
- Inductor
- 8.2uH
- Electronic Component
- 1
- Electronic Component
- BM0233317416
- Current
- 2.4A
- Resistor(DCR)
- 175mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- and Current(Isat)
- 3.8A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FHD4020S-8R2MT 产品概述
一、产品简介
FHD4020S-8R2MT 是长江微电（cjiang）推出的一款功率电感器，采用表面贴装（SMD）封装，外形尺寸为 4×4 mm。该器件标称电感值为 8.2 μH，公差 ±20%，面向中低功率开关电源与电源滤波场景设计，强调体积小、耐饱和电流能力和良好的热稳定性。
二、主要参数
- 电感值：8.2 μH（±20%）
- 额定电流（Ir）：2.4 A（允许连续工作电流，按温升限制）
- 饱和电流（Isat）：3.8 A（在该电流下电感值显著下降）
- 直流电阻（DCR）：约 175 mΩ
- 封装形式：SMD，4×4 mm
- 品牌：cjiang（长江微电）
三、特点与优势
- 小尺寸：4×4 mm 的表贴封装适用于空间受限的电源模块和便携设备。
- 抗饱和能力强：3.8 A 的饱和电流保证在瞬态峰值电流下仍能维持工作，适合需要较大启动或突发电流的电源。
- 稳定的连续电流承载能力：2.4 A 的额定电流适配多数降压转换器的输出电感或输入滤波应用。
- 可控损耗：虽 DCR 为 175 mΩ，设计时可通过合理的效率评估与散热方案平衡导通损耗与体积优势。
四、典型应用
- DC-DC 降压转换器（作为输出电感）
- 电源输入滤波与EMI抑制
- LED 驱动与便携电源管理模块
- 工业与通信设备中的局部电源模块
五、选型与使用建议
- 额定电流 Ir 表示在允许温升条件下的连续电流；若电路中有较大纹波或长期高负载，建议留有裕量，优先考虑不超过额定电流的 80% 作为长期工作值。
- 峰值或短时冲击电流可参考 Isat（3.8 A），但须注意饱和时电感下降会影响环路稳定性与输出纹波。
- 由于 DCR 较高，器件在较大电流下会产生明显 I^2R 损耗，应在方案中评估功耗与散热（PCB 铜箔、散热过孔或外壳散热路径）。
- 对回流焊和贴片工艺，建议遵循无铅回流曲线与厂商推荐的贴装工艺以保证可靠焊接。
六、可靠性与包装
长江微电的功率电感通常通过温度循环、机械振动和焊接热稳定性测试。标准卷装或带卷包装，便于自动贴装与生产线使用。具体可靠性数据与存储、回流焊温度曲线建议参考厂方数据手册或向供应商索取详细规格书。
总结：FHD4020S-8R2MT 以其 8.2 μH 的电感值、较高的饱和电流和紧凑的 4×4 mm SMD 封装，适合在空间受限且需承受瞬态冲击电流的电源应用中作为输出电感或滤波元件。选型时应综合考虑额定电流、DCR 带来的损耗以及电路的热管理需求。若需更详细的曲线和环境性能数据，建议索取厂方完整规格书。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
