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HXY MOSFET TIP122
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
18
specifications
Core information
- Product name
- HXY MOSFET TIP122
- Type
- HXY MOSFET
- Minimum package
- 50 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HXY MOSFET
- Electronic Component
- TIP122
- Electronic Component
- 1
- Package
- TO-220S
- Type
- NPN
- Electronic Component
- Darlington Transistor
- Electronic Component
- 1g
- Electronic Component
- 1
- Electronic Component
- BM0258662176
- Power Dissipation(Pd)
- 65W
- Electronic Component
- Electronic Component
- Electronic Component
- 50
- Collector Current(Ic)
- 5A
- Collector-Emitter Breakdown Voltage(Vceo)
- 100V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
TIP122 产品概述
一、产品简介
TIP122 是一种高增益大功率 NPN 达林顿（Darlington）晶体管，适合驱动中小功率负载与做通用开关元件。该型号由 HXY MOSFET（华轩阳电子）供应，封装为 TO-220S，便于安装散热片和电路板固定。器件内部为双晶体管达林顿结构，提供很高的电流增益，便于用较小的基极驱动电流控制较大的集电极电流。
二、主要参数
- 功率耗散（Pd）：65W（配合良好散热条件下）
- 晶体管类型：NPN（达林顿）
- 直流电流增益 hFE：约 1000（测试条件 Ic=3A、Vce=3V）
- 集射极击穿电压 Vceo：100V
- 最大集电极电流 Ic：5A
- 封装：TO-220S
以上为典型规格，实际使用时需参考器件温度、散热条件与工作点进行功率与电流的安全裕度计算。
三、特性与优势
- 极高的直流电流增益（hFE≈1000），在需要用小电流驱动大电流场合可显著减少前级驱动功率。
- 100V 的耐压能力，适合多数中低压开关场景。
- TO-220S 封装利于散热管理，便于与散热片或风冷系统配合使用。
- 适用于开关和线性驱动两种工作方式，应用灵活。
四、应用场景
- 继电器与小型电机驱动（步进电机、直流电机低频控制）
- 灯光、加热器等负载的电源开关控制
- 作为功率放大级或缓冲级，用于放大控制信号
- 工业自动化、家用电器及教学实验电路等
五、封装与热管理建议
TO-220S 在自由空气中散热有限，65W 为在良好散热条件下的额定耗散。实际设计中应：
- 使用合适面积的散热片或与底板良好导热接触；
- 应用导热硅脂或绝缘垫片以降低热阻；
- 关注结温与环境温度，依据厂商的温度系数进行功率降额（Derating）；
- 在高电流工况下尽量缩短导线与走线，减小接触热阻。
六、选型与使用注意
- 达林顿结构会带来较高的饱和压降（VCE(sat) 相对单晶体管更高），在高电流、低压降场合需评估额外发热与效率损失；
- 达林顿基极-发射极电压通常较高（约 2V 以上），驱动电路需提供足够的驱动电压或采用驱动增强电路；
- 对感性负载（电机、继电器线圈）建议并联反向二极管或使用 RC 吸收网络以抑制反向尖峰；
- 留有安全裕度，不要长期在额定极限（Ic、Vce、Pd）下工作，避免热失控。
七、结语
TIP122（HXY MOSFET/华轩阳电子，TO-220S 封装）以其高增益和良好的耐压特性，适合多种中低频驱动与开关应用。合理的散热设计与驱动电路配合是发挥其性能并保证可靠性的关键。选用时应结合具体工作电流、开关频率与热环境进行综合评估。
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