WMSIC Electronic Components

TWGMC DTC143ZUA Digital Transistor DTC143ZUA

ModelDTC143ZUA
PackageSOT-323
BrandTWGMC
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TWGMC DTC143ZUA
Type
SOT-323
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
DTC143ZUA
Electronic Component
1
Package
SOT-323
Electronic Component
1 NPN
Electronic Component
Digital Transistor
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0226538442
Operating Temperature
55℃~+150℃
Resistor
12
Resistor
6.11kΩ
Transistor Type
NPN
Frequency(f T)
250MHz
Power Dissipation(Pd)
200mW

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

DTC143ZUA 产品概述

DTC143ZUA 是一款集成化数字晶体管(Digital Transistor),在一个 SOT-323 封装内集成了基极限流/偏置电阻,适合空间受限、需要简化外围元件的开关与接口电路。该器件由 TWGMC(台湾迪嘉)提供,具有宽工作温度和良好的开关特性,适合微控制器接口、LED 驱动及低功耗开关应用。

一、主要特性

  • 型号:DTC143ZUA(TWGMC)
  • 封装:SOT-323(超小体积)
  • 直流电流增益 hFE:典型 80(Ic = 10 mA,VCE = 5 V)
  • 集射极击穿电压 Vceo:50 V
  • 最大集电极电流 Ic:100 mA(持续)
  • 输出饱和电压 VO(on):约 300 mV(Ic = 5 mA);在更小电流(如 0.25 mA)时更低
  • 输入电阻(基极限流):6.11 kΩ(内部集成)
  • 电阻比率:12(内部偏置/限流比率参考)
  • 输入门限:VI(on) 参考值 ~1.3 V(在 5 mA 负载条件下);在特定条件下可低至 0.3 V;关断时最大 VI(off) ≈ 500 mV
  • 功耗 Pd(最大耗散):200 mW
  • 工作温度范围:-55 ℃ 至 +150 ℃

二、功能与优势

  • 集成基极电阻,减少外部元件数量:输入端可直接与逻辑信号或单片机引脚相连,无需外接基极限流电阻,简化 PCB 布局与装配。
  • 低饱和压降:在常用工作电流下 VO(on) 低,降低开关功耗,提高效率,适合驱动 LED、小继电器线圈(需注意电流限制)或作开漏输出缓冲。
  • 宽电压与温度适应性:Vceo = 50 V 与 -55~+150 ℃ 工作温度覆盖多种工业和消费级场景。
  • 小体积封装:SOT-323 适合便携式与高密度电路板设计。

三、典型应用场景

  • MCU/逻辑电平到低电阻负载的直接驱动:例如状态指示 LED 或小功率负载开关。
  • 开关缓冲与电平移位:逻辑高电平控制更高电压负载,或作为单片机 I/O 的增强输出。
  • 信号整形与线路保护:当上游信号幅度有限或需要电流限制时,内部电阻提供基本保护。
  • 小型继电器驱动或电磁器件的前级驱动(需注意不超过 Ic = 100 mA)。

四、使用注意事项

  • 功率与散热:器件最大耗散功率为 200 mW,SOT-323 的散热能力有限。在高 Ic 或高 VCE 条件下需避免超过 Pd,建议通过增加 PCB 铜箔面积或合理降低开关占空比来改善散热。
  • 电流与电压守限:避免在实际应用中超过 Ic = 100 mA 或 Vceo = 50 V。若负载电流较大,应采用外接驱动器或并联功率器件。
  • 输入电压范围:当输入低于约 500 mV 时可保证关断;输入高于约 1.3 V(在 5 mA 负载条件下)可可靠导通。实际门限会随负载和温度变化,应在目标系统中做验证。
  • ESD 与焊接:SOT-323 为小型引脚封装,装配过程注意静电防护与合适的回流焊温度曲线以保证可靠性。

五、封装与布局建议

  • 封装:SOT-323(适用于表面贴装工艺,适合自动化贴装)。
  • 布局建议:将器件靠近被驱动负载布置,确保集电极与负载之间走线短且铜箔充分以利散热。若功率耗散较大,增加底层或散热铜箔面积。

六、可靠性与选型提示

  • 工作温度范围覆盖工业级需求(-55℃~+150℃),适合多种环境使用,但在高温环境下应按 Pd 做降额设计。
  • 若设计需更高电流能力或更低饱和压,建议选择功率级晶体管或外接达林顿/场效应器件;若需更明确的门限和速度指标,应参考完整数据手册并在目标系统中做驱动与信号完整性测试。

总结:DTC143ZUA 以其内部集成限流/偏置电阻、低 VO(on) 与小型封装,适合用于简化电路、节省 PCB 空间的低功耗开关与接口场景。在设计时需关注功率耗散与最大电流限制,合理布局与散热可确保稳定可靠运行。若需更详细的时序、极限参数和典型应用电路,请查阅完整器件数据手册或联系供应商获取应用笔记。

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