WMSIC Electronic Components

worldsemi WS2812B-4020-G1 WS2812B

ModelWS2812B-4020-G1
PackageSMD-4P,4x2mm
BrandWORLDSEMI
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
worldsemi WS2812B-4020-G1
Type
WORLDSEMI
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WORLDSEMI
Electronic Component
WS2812B-4020-G1
Electronic Component
1
Electronic Component
2mm
Package
SMD-4P,4x2mm
Electronic Component
R:620nm~625nm;B:465nm~475nm;G:515nm~525nm
Electronic Component
RGB LED(Built-in IC)
Electronic Component
0.084g
Electronic Component
3.98mm
Electronic Component
1.7mm
PWMFrequency
2kHz
Electronic Component
1
Features
Built-in positions; Integrated; Built-in positions
LED
B:200mcd~300mcd;R:300mcd~500mcd;G:600mcd~1000mcd
Electronic Component
BM0264717372

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

WS2812B-4020-G1 产品概述

WS2812B-4020-G1 是 worldsemi 推出的 5V 4020 尺寸(三色侧发光)内置驱动 IC 的幻彩贴片灯珠。该器件在极小的封装(4.0×2.0×1.7mm)内集成了单线串行控制的 LED 三色单元与智能驱动电路,具备低功耗、可靠的上电/掉电复位和反向连接保护,适合鼠标、键盘、音箱、机箱风扇、电子琴、便携式乐器等差异化外设与工业应用的点阵或环形光源设计。

一、核心特性

  • 单线串行控制协议,数据速率 800 Kbit/s(兼容 WS2812B 协议)。
  • 内置上电复位与掉电复位电路,保证电源波动下的稳定启动与复位。
  • 集成智能反向连接保护,提高产品可靠性与生产良率。
  • 工作电压范围:3.7V ~ 5.3V(推荐 5V 系统使用)。
  • PWM 工作频率:2 kHz,提供平滑亮度调节与色彩混合。
  • 小电流驱动,典型工作电流(全亮白)约 12 mA/LED;静态待机电流约 0.6 mA/LED。
  • 封装:SMD-4P,外形尺寸 3.98 mm × 2.00 mm × 1.70 mm,侧发光设计便于边缘光源布局。

二、光学与电气参数(关键值)

  • 波长(典型范围)
    • 红光 R:620 nm ~ 625 nm
    • 绿光 G:515 nm ~ 525 nm
    • 蓝光 B:465 nm ~ 475 nm
  • 发光强度(各色典型区间)
    • 蓝光 B:200 mcd ~ 300 mcd
    • 红光 R:300 mcd ~ 500 mcd
    • 绿光 G:600 mcd ~ 1000 mcd
  • 静态电流:≈ 0.6 mA/LED(无数据帧,灯处于待机状态)
  • 工作电流(满亮白):≈ 12 mA/LED(注意:这是该型号的低电流设计,实际应用中请按实际测量为准)
  • 工作温度范围:-40 ℃ ~ +65 ℃

三、电源与驱动设计建议

  • 电源:推荐 5 V 供电以获得最佳亮度与色彩一致性;该器件也支持 3.7 V 至 5.3 V 的宽电压工作。
  • 电流预算示例:若单 LED 全白工作电流取 12 mA,则总电流 = 12 mA × LED 数量。
    • 例如 50 颗:0.6 A;100 颗:1.2 A。长串或高密度布局建议在多个位置注入电源以降低压降。
  • 去耦与保护
    • 在每段电源入口并联 100 μF(或更大)低 ESR 电容,靠近首颗 LED 放置。
    • 在数据线上建议串联 220 Ω~470 Ω 的限流/抗反射电阻以缓冲驱动器输出与减少瞬态干扰。
  • 数据输入电平
    • 当系统供电为 5 V 时,若 MCU 输出为 3.3 V,建议使用推挽电平转换器(电平移位)以确保可靠识别数据高电平。
    • 若供电降至 3.7 V 左右,则 3.3 V MCU 输出通常可直接驱动(但需在实际环境验证)。

四、使用与布局要点

  • 封装与焊接:SMD-4P、4×2 mm 尺寸,侧发光结构方便边缘或侧面发光设计。建议按常规无铅回流工艺进行贴装,参照锡膏与 PCB 厂家给出的回流曲线进行热处理。
  • 熱管理:虽然单颗功耗较低,但长串或密集阵列会累积热量,建议在布局时预留散热路径并避免长期在高温环境下工作。
  • 信号完整性:数据线尽量短且避免与大电流导线平行走线,必要时增加地线回流或屏蔽。
  • ESD 与静电保护:尽管器件内有保护设计,生产与装配仍需遵循静电防护措施(ESD 地垫、腕带等)。

五、典型应用场景

  • 外设照明:鼠标、机械键盘、手柄的侧边或底部氛围灯。
  • 桌面与机箱:音箱、机箱风扇、LED 灯条的点阵装饰光源。
  • 便携乐器与电子琴:按键背光、边缘光效和节奏响应灯效。
  • 小型显示与指示:智能家居面板、可编程指示灯、装置界面状态显示。

六、选型与可靠性提示

  • 若需更高亮度或色彩一致性,可考虑更大封装或高电流版本;若对寿命与高温环境要求严格,应选择标注更高工作温度或做额外散热设计。
  • 在批量生产前,建议进行通电老化、静态/动态亮度一致性与长期循环测试,验证上电/掉电时序对系统控制器的兼容性。

如需进一步的脚位定义、参考驱动时序波形、PCB 封装库(footprint)或样品测试报告,我可以根据您的应用场景提供针对性的建议与资料。

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