WMSIC Electronic Components

LITEON LTST-C281TBKT-5A

ModelLTST-C281TBKT-5A
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

19 specifications

Core information

Product name
LITEON LTST-C281TBKT-5A
Type
LITEON
Minimum package
5000 卷

Technical parameters

Power
76mW
Electronic Component
Electronic Component
Electronic Component
LITEON
Electronic Component
LTST-C281TBKT-5A
Electronic Component
1
Package
0402
Electronic Component
475nm
Electronic Component
LEDDiode / LED
Electronic Component
0.02g
Electronic Component
1
LED
28.1mcd
LED
130°
LED
Electronic Component
Electronic Component
BM0230022090
Electronic Component
468nm
Operating Temperature
20℃~+80℃

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

LTST-C281TBKT-5A 产品概述

一、产品简介

LTST-C281TBKT-5A 是 LITEON(台湾光宝)推出的一款超小型蓝色贴片LED,采用 0402 封装,透明透镜,发光角度宽达 130°,适合对体积与视角均有严格要求的消费电子与指示类产品。典型工作条件下的参数如下:正向电流 If = 5 mA,正向压降 Vf ≈ 2.9 V,峰值波长 468 nm,标称波长 475 nm,发光强度约 28.1 mcd。

二、主要参数一览

  • 发光颜色:蓝色
  • 封装:0402(公制约 1.0 mm × 0.5 mm)透明透镜
  • 正向电流(Typical):5 mA
  • 正向压降(Vf):2.9 V(典型值)
  • 波长:标称 475 nm,峰值波长 468 nm
  • 发光强度:28.1 mcd(典型)
  • 发光角度:130°(广视角)
  • 功率:76 mW(按给定资料列出)
  • 工作温度范围:-20 ℃ 至 +80 ℃

注:在实际应用中,LED 的驱动功耗可由 Vf × If 计算(例如 2.9 V × 5 mA ≈ 14.5 mW);文档中给出的“功率 76 mW”应以原厂资料为准并与具体测试条件核对。

三、电学与光学说明

  • 光谱特性:峰值波长 468 nm 表征光谱的最大辐射处;标称波长 475 nm 为视觉感受与产品系列标识常用值。两者并不矛盾,具体光谱曲线请参见原厂谱线图以确定色彩一致性。
  • 发光强度与视角:28.1 mcd(典型)配合 130° 宽视角,适合做广域可见指示与背光均匀性要求不高的场合。
  • 正向压降与驱动:在 5 mA 工作点 Vf ≈ 2.9 V,为保证稳定亮度建议恒流驱动或在串联限流电阻的前提下进行设计。

四、驱动与电路参考

典型限流电阻计算(示例):

  • 采用 5 V 电源:R = (5.0 V − 2.9 V) / 5 mA = 420 Ω → 取标准值 430 Ω;电阻功耗 P_R = I^2 × R ≈ 0.005^2 × 430 ≈ 10.75 mW。
  • 采用 3.3 V 电源:R = (3.3 V − 2.9 V) / 5 mA = 80 Ω → 取 82 Ω,电阻功耗约 0.4 mW。
    建议限流电阻额定功率选择 1/8 W(或更高)以保证可靠性。对色彩与亮度一致性有较高要求的场合,优先采用恒流驱动器。

五、封装与装配要点

  • 0402 超小封装,适用于高密度 PCB 设计。典型外形尺寸为 1.0 mm × 0.5 mm(请以原厂机械图为准)。
  • 透明透镜有助于获得较宽的视角与均匀的出光分布。
  • 在 PCB 布局与回流焊工艺上,建议采用厂方推荐的焊盘尺寸与回流曲线,避免因焊盘过大或过小导致的焊接缺陷或应力问题。

六、热管理与可靠性

  • 工作温度范围为 -20 ℃ 至 +80 ℃,超出此范围会影响光输出与寿命。
  • 由于封装体积小,器件的热阻较高,长时间高电流驱动会导致结温升高,从而加速亮度衰减。建议在 PCB 设计时考虑散热路径,合理选取驱动电流并进行必要的热仿真与老化验证。

七、应用场景

  • 消费性电子的指示灯(例如耳机、可穿戴设备、遥控器)
  • 仪表与面板状态指示
  • 小尺寸背光或装饰照明
  • 需宽视角且微型化的信号指示场合

八、包装、采购与资料获取

  • 品牌:LITEON(台湾光宝)
  • 型号:LTST-C281TBKT-5A
  • 常见包装形式为卷带(Tape & Reel),采购时请向供应商确认包装单位与批次。
  • 在正式设计与量产前,建议索取并详细阅读 LITEON 的原厂数据手册(Datasheet),确认焊盘尺寸、回流焊曲线、光度-电流曲线与可靠性测试数据,以确保一致性与可靠性。

如需我帮您计算不同电源电压下的限流电阻、估算亮度随电流变化的趋势或对接替换型号的比较,请告知具体供电与应用条件。

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