Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
cjiang FXL0420-4R7-M FXL0420
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FXL0420-4R7-M
- Type
- CJIANG
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FXL0420-4R7-M
- Electronic Component
- 1
- Package
- SMD,4.2x4.4mm
- Type
- Inductor
- Electronic Component
- Power Inductor
- Electronic Component
- ±20%
- Electronic Component
- 0.297g
- Inductor
- 4.7uH
- Electronic Component
- 1
- Electronic Component
- BM0230864544
- Current
- 2.8A
- Resistor(DCR)
- 105mΩ
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FXL0420-4R7-M 产品概述
一、产品简介
FXL0420-4R7-M 为 cjiang（长江微电）出品的一体成型功率电感，封装尺寸为 SMD 4.2×4.4mm。标称电感值 4.7µH，公差 ±20%，额定电流 2.8A，饱和电流（Isat）3A，直流电阻（DCR）约 105mΩ。适用于对体积、可靠性和大电流性能有要求的开关电源与电源滤波场合。
二、主要规格（关键参数）
- 电感值：4.7µH ±20%
- 额定电流：2.8A（连续使用限值）
- 饱和电流：3A（L 降到一定比例时出现饱和）
- 直流电阻：≈105mΩ（影响功率损耗与效率）
- 封装：SMD，4.2×4.4mm，一体成型结构
三、产品特性与优势
- 高电流承载能力：额定电流与饱和电流适配 2–3A 级别电源设计。
- 稳定的机械结构：一体成型，抗振动、易贴装，适合自动化生产。
- 紧凑体积：小封装满足空间受限的点对点供电或多通道电源模块。
- 可观效率表现：虽非极低 DCR，但 4.7µH/105mΩ 在中频开关工作点下兼顾滤波与损耗。
四、典型应用场景
- 同步降压（buck）转换器的功率电感。
- LED 驱动、便携设备电源管理、车载电子（需确认温度与振动等级）等中高电流应用。
- 输入/输出滤波器、负载点（POL）电源模块。
五、选型与设计注意事项
- DC 偏置影响：在大直流偏置下电感值会下降，实测 L 与公称值可能有偏差，设计需考虑纹波电流与有效 L。
- 饱和裕量：保证最大纹波电流与直流电流之和低于 Isat，以免进入磁饱和。
- DCR 与发热：105mΩ 将产生 I^2·R 损耗，需评估温升与散热路径。
- 计算参考：L = (Vin - Vout)·D / (ΔI·fs)，按实际工作频率与允许纹波电流选型。
六、封装与焊接建议
- 建议采用标准 SMD 贴装工艺与回流焊曲线；遵循厂商推荐的回流温度/时间以免结构受损。
- 布局建议：尽量将电感置于开关器件与输出电容之间，减小开关回路面积与寄生电感，优化散热并预留良好铜箔散热面。
七、可靠性与测试项
- 常规测试包括：L 值与 DCR 测试、饱和电流测试、温升测试、焊接可靠性、振动与跌落评估。
- 在高温或严苛环境（如车规）使用前，应验证温度漂移与长期老化特性。
八、采购与替代建议
- 型号：FXL0420-4R7-M，品牌：cjiang（长江微电），若需大批量请向厂商确认包装（卷带）与可用性。
- 替代时注意同类产品的 Isat、额定电流、DCR 与封装尺寸一致，特别关注 DC 偏置下的实际 L 值与热耗。
如需我提供 PCB 封装推荐脚位、典型电路原理图或热评估建议，请告知工作频率、输入/输出电压与最大纹波电流等设计参数。
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.
