WMSIC Electronic Components

LRC LBC857BWT1G

ModelLBC857BWT1G
PackageSC-70
BrandLRC
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
LRC LBC857BWT1G
Type
LRC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
LBC857BWT1G
Electronic Component
1
Package
SC-70
Electronic Component
1 PNP
Electronic Component
Transistor(BJT)
Electronic Component
0.027g
Electronic Component
1
Electronic Component
BM0264716109
Operating Temperature
55℃~+150℃
Transistor Type
PNP
Frequency(f T)
100MHz
Power Dissipation(Pd)
150mW
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.

LBC857BWT1G PNP型双极型晶体管产品概述

一、产品基本定位与品牌背景

LBC857BWT1G是乐山无线电股份有限公司(LRC)推出的通用型PNP双极型晶体管(BJT),定位于小信号放大与低功耗开关场景,兼具高频性能与宽温适应性。作为国内分立器件领域的老牌厂商,LRC在封装工艺与器件可靠性方面积累了成熟技术,其产品广泛应用于消费电子、工业控制、汽车电子等领域,以一致性好、性价比高著称。

二、关键电气性能参数详解

该晶体管的核心参数覆盖电压、电流、功率、增益及频率等维度,具体特性如下:

  • 电压耐压:集射极击穿电压(VCEO)达45V,满足中低压电路的反向耐压需求;射基极击穿电压(VEBO)为5V,保障基极-发射极回路的安全工作范围。
  • 电流能力:最大集电极电流(IC)为100mA,可支持中等负载驱动;集电极截止电流(ICBO)仅4μA,漏电流小,长期工作稳定性优异,适配低功耗电路。
  • 功率特性:最大耗散功率(PD)为150mW,属于低功耗器件,能有效降低电路整体功耗,适配电池供电的便携设备。
  • 增益与频率:直流电流增益(hFE)在2.0mA、5.0V工作点下可达220,具备足够的小信号放大能力;特征频率(fT)为100MHz,支持中高频信号处理(如射频辅助电路)。
  • 开关性能:集射极饱和电压(VCE(sat))仅650mV,开关损耗低,适合驱动小负载(如LED、小型继电器)。

三、封装形式与物理特性

LBC857BWT1G采用SC-70封装(又称SOT-323),属于超小型表面贴装封装,引脚数为3,封装尺寸约1.6mm×1.0mm×0.8mm。相比传统TO-92封装,体积缩小70%以上,可显著节省PCB布局空间,适配智能手机、可穿戴设备、小型传感器模块等便携化设计。同时,SC-70封装的引脚间距合理,焊接工艺兼容性好,适合自动化贴装生产。

四、典型应用场景

结合参数特性,该晶体管的典型应用包括:

  1. 小信号放大:如音频前置放大器、传感器信号调理电路(温度/压力传感器信号放大),利用高hFE实现弱信号有效放大;
  2. 高频辅助电路:100MHz特征频率可用于射频接收/发射模块的偏置电路、混频器辅助电路;
  3. 低功耗开关:低饱和压降与低功耗特性,适合驱动LED指示灯、小型继电器线圈、微型电机等小负载;
  4. 宽温环境:-55℃~+150℃工作温度范围,覆盖工业控制(PLC模块)、汽车电子(车载传感器电路)等极端温度场景。

五、可靠性与环境适应性

该器件可靠性表现突出:

  • 宽温稳定性:覆盖工业级温度范围,极端温度下性能无明显漂移;
  • 低漏电流:ICBO仅4μA,减少静态功耗与噪声干扰,提升信号纯度;
  • 封装可靠性:LRC成熟工艺保障抗振动、耐冲击能力,适合恶劣工况长期使用。

整体而言,LBC857BWT1G以高频性能、低功耗、小封装及宽温适应性,成为消费电子、工业控制等领域中小信号放大与开关应用的高性价比选择。

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