WMSIC Electronic Components

LITEON LTW-C281DS5

ModelLTW-C281DS5
Package0402
BrandLITEON
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

20 specifications

Core information

Product name
LITEON LTW-C281DS5
Type
LITEON
Unit
Electronic Component
Minimum package
5000 卷

Technical parameters

Power
70mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
LITEON
Electronic Component
LTW-C281DS5
Electronic Component
1
Package
0402
Electronic Component
LEDDiode / LED
Electronic Component
0.029g
Electronic Component
1
LED
113mcd
LED
130°
LED
Electronic Component
Electronic Component
BM0227695566
Operating Temperature
30℃~+80℃
Current
5mA

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

LTW-C281DS5 产品概述

一、产品简介

LTW-C281DS5 是 LITEON(台湾光宝)推出的一款高性价比白光贴片 LED,采用 0402 超小封装,单颗为独立二极管设计,透镜为黄色透镜,适合微型背光、指示和装饰照明等对尺寸与亮度均有要求的场合。该器件以稳定的光电性能与良好的封装一致性著称,便于批量表面贴装生产。

二、主要参数

  • 发光颜色:白色(白光芯片,黄色透镜)
  • 正向压降 Vf(典型):2.85 V(@ If=5 mA)
  • 正向电流 If(额定/工作参考):5 mA
  • 功率:70 mW(器件功耗指标)
  • 发光强度:113 mcd(@ If=5 mA)
  • 发光角度:130°
  • 二极管配置:独立二极管
  • 工作温度范围:-30℃ ~ +80℃
  • 封装:0402(超小型表贴)

三、电气与光学特性

在典型驱动条件(If=5 mA)下,器件呈中高亮度输出(约113 mcd),视角宽达130°,适合均匀照明需求。正向压降约为2.85 V,驱动电源与限流设计时应按此值计算。典型限流电阻计算:R = (Vs - Vf) / If。举例:在 3.3 V 电源下,R ≈ (3.3−2.85)/0.005 ≈ 90 Ω;在 5 V 电源下,R ≈ 430 Ω。使用时请同时核算电阻功耗 P = I^2·R。

四、封装与机械特性

0402 封装体积极小,适合高密度 PCB 布局与微型终端产品。黄色透镜有利于改善白光色容差与光分布,但在色温要求严格的应用中需与系统色校正配合。由于体积小、热容低,焊接与 PCB 热平衡设计对可靠性影响明显,建议遵循厂家给出的焊接与回流曲线。

五、典型应用

  • 手机、可穿戴设备与小型显示器背光
  • 仪表、指示灯与状态显示
  • 便携式设备的装饰与功能照明
  • 医疗小型器械与 IoT 终端指示模块

六、使用与设计建议

  • 建议工作电流以 5 mA 为参考,避免长期超额驱动以延长寿命。
  • 驱动电路采用恒流或限流电阻并结合电源滤波,防止电压尖峰。
  • 焊接参考通用 SMT 回流工艺,避免过高峰值温度与过长高温保持时间(建议遵循 LITEON 官方回流资料)。
  • PCB 焊盘设计应兼顾焊料流动与热分布,避免因热失衡引发 tombstoning(翘立);如条件允许,可在封装两侧增加对称铜量。
  • 处理与装配时注意静电防护(ESD),避免直接用手接触 LED 发光面及引脚。

七、可靠性与储存

  • 器件工作温度范围为 -30℃ 至 +80℃,使用时应保证环境温度与散热条件在此范围内。
  • 长期储存应避光、防潮,建议密封干燥保存并按先入先出原则使用。若开启包装后未立即使用,应按干燥箱或干燥剂保存,避免吸湿造成焊接缺陷。

八、采购与替代

LTW-C281DS5 属于通用型白光 0402 LED,适合需要超小尺寸与中等亮度的设计。采购时请确认批次参数(亮度、色度)以满足色彩一致性要求;在无法获得原厂供应时,可选择同类 0402 白光 LED 做替代,但需注意 Vf、亮度与透镜差异对最终视觉效果的影响。

如需焊接回流曲线、封装尺寸图或更详细的光电曲线(Iv–If、Vf–If、色坐标等),建议向 LITEON 获取 LTW-C281DS5 的完整数据手册以做最终设计验证。

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