WMSIC Electronic Components

RN1903,LF(CT RN1903

ModelRN1903,LF(CT
PackageTSSOP-6(SC-88)SOT-363
BrandTOSHIBA
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 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TOSHIBA RN1903, LF(CT
Type
TOSHIBA
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TOSHIBA
Electronic Component
RN1903,LF(CT
Electronic Component
1
Package
TSSOP-6(SC-88)SOT-363
Electronic Component
2 NPN
Electronic Component
Digital Transistor
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0265837262
Resistor
1
Resistor
22kΩ
Transistor Type
NPN
Power Dissipation(Pd)
200mW
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.

东芝RN1903,LF(CT)数字晶体管产品概述

一、产品核心定位

RN1903,LF(CT)是东芝推出的预偏置双NPN数字晶体管,专为低压数字电路、小型负载驱动及便携式设备设计。该产品集成两个NPN管与预偏置电阻,兼具小型化、低功耗与高可靠性特点,可替代传统离散NPN管+偏置电阻方案,简化电路设计并节省PCB空间,适配主流消费电子与工业辅助控制场景。

二、关键电气参数详解

核心参数覆盖耐压、电流、功耗及增益等维度,满足大多数低压应用需求:

  • 击穿电压:集射极击穿电压VCEO=50V(高于常见30V规格),射基极击穿电压VEBO=10V,提供充足耐压裕量,应对电路电压波动更安全;
  • 电流能力:集电极最大持续电流IC=100mA,可稳定驱动小型LED、微型继电器、蜂鸣器等负载;
  • 功耗限制:最大耗散功率Pd=200mW,适合电池供电设备,长时间工作无明显发热;
  • 增益特性:直流电流增益hFE=70(测试条件:IC=10mA、VCE=5V),增益一致性好,信号放大稳定;
  • 预偏置参数:内置22kΩ输入电阻(电阻比率1:1),最小输入导通电压VI(on)=2.4V(测试条件:输入电流5mA),无需外部偏置电阻即可实现稳定导通。

三、封装与物理特性

采用US6封装(对应TSSOP-6/SOT-363),属于超小型表面贴装结构:

  • 封装尺寸紧凑(典型值:2.9mm×1.6mm×0.8mm),仅需少量PCB空间,适配智能手机、智能手环、小型家电等高密度设计;
  • 6引脚表面贴装结构,兼容自动化贴装生产线,生产效率高;
  • 封装材料耐高温(回流焊温度可达260℃),满足工业级焊接工艺要求,无封装开裂风险。

四、典型应用场景

因集成度高、功耗低、电流适配性强,广泛应用于以下场景:

  1. 数字逻辑缓冲/驱动:作为CMOS、TTL门电路的输出缓冲,提升驱动能力,避免逻辑芯片直接驱动负载导致的性能下降;
  2. 小型负载驱动:驱动小功率LED(如设备指示灯)、微型电磁继电器(如家电控制开关)、蜂鸣器等,电流能力完全匹配;
  3. 便携式设备辅助控制:手机、智能手表、蓝牙耳机的按键扫描、状态指示驱动电路,低功耗特性延长电池续航;
  4. 家电控制板:加湿器、智能插座等小型家电的开关控制、状态反馈电路,50V耐压应对市电波动更可靠。

五、产品优势与适用价值

相比传统离散方案,RN1903具备明显优势:

  1. 简化设计:内置预偏置电阻与双NPN管,无需额外焊接偏置电阻,减少元件数量与PCB布线复杂度;
  2. 空间优化:双管集成于超小封装,比两个离散NPN管+电阻节省约60%PCB面积,适配小型化产品;
  3. 性能稳定:东芝成熟工艺保证hFE一致性,批次间参数波动小,电路工作可靠性高;
  4. 成本控制:集成方案减少物料种类与采购成本,同时降低焊接不良率,提升生产良率;
  5. 低功耗适配:200mW功耗适合电池供电设备,长时间工作无发热问题,满足便携式产品续航需求。

该产品凭借高集成度、稳定性能与小型化设计,成为消费电子、小型家电及工业辅助控制领域的优选器件,可有效提升产品竞争力。

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