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LRC LMBT493NELT1G
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
18
specifications
Core information
- Product name
- LRC LMBT493NELT1G
- Type
- LRC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LRC
- Electronic Component
- LMBT493NELT1G
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.034g
- Electronic Component
- 1
- Electronic Component
- BM0229935404
- Transistor Type
- NPN
- Frequency(f T)
- 100MHz
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Collector Current(Ic)
- 1A
- 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.
LMBT493NELT1G 产品概述
一、概述
LMBT493NELT1G 是一款面向通用放大与开关应用的 NPN 双极型晶体管，由乐山无线电（LRC）生产。器件在 SOT-23 小封装下实现了高达 100V 的集射极击穿电压（Vceo）和 1A 的集电极电流承载能力，特征频率（fT）约为 100MHz，适合在中高压、小体积的电子电路中替代传统的封装较大的晶体管，实现电路小型化和可靠性提升。
二、主要规格与特性
- 晶体管类型：NPN 双极型晶体管（BJT）
- 最大集电极电流（Ic）：1 A（连续）
- 集射极击穿电压（Vceo）：100 V
- 特征频率（fT）：约 100 MHz
- 封装形式：SOT-23（3 引脚）
- 适用方向：小信号放大、低速开关、高压保护电路等
这些参数表明 LMBT493NELT1G 能在较高电压下工作且具备中等频率响应，适合对电压耐受要求高但功率需求不大的场景。
三、应用场景
- 低功耗开关电路：用于逻辑控制、继电器驱动的前级开关或电平转换。
- 放大电路：小信号放大，适用于音频前级或中频电路中的增益元件（受 fT 限制，适用至数十 MHz 区间）。
- 保护与钳位：过压、欠压检测电路中的开关元件或作为电流检测的驱动器。
- 工业与消费电子：电源管理、电机控制的信号级接口等需要高压耐受的小尺寸器件。
四、封装与引脚信息
- 封装：SOT-23，利于表面贴装与自动化生产。
- 常见引脚排列（建议以数据手册为准）：1 = 基极（B）、2 = 发射极（E）、3 = 集电极（C）。
- 注意：不同厂商或不同封装版本的引脚定义可能有所差异，最终设计请以官方数据手册和封装图为准。
五、设计与使用建议
- 电压与电流裕量：工作时建议留有一定裕量，避免长期在极限 100V 或 1A 下运行，以延长器件寿命并保证稳定性。
- 散热管理：SOT-23 封装散热有限，若在接近 1A 的条件下长时间工作，应注意 PCB 散热设计（加大铜箔面积、使用过孔等）。
- 开关速度与驱动：若用于开关应用，基极驱动要能提供足够电流来快速切换，避免因慢切换导致高损耗。
- 干扰与稳定性：在高频或放大应用中，做好旁路/退耦和屏蔽，避免寄生振荡或耦合。
六、可靠性与选型注意
- 可靠性：适用于一般工业与消费级应用；如用于汽车或高可靠场景，请咨询厂方或选用对应等级认证的器件。
- 选型提示：在需要更高频率或更大电流时，可考虑 fT 更高或额定 Ic 更大的型号；在更小封装或更低 Vce 要求时亦可匹配其他 LRC 系列产品。
总结：LMBT493NELT1G 在 SOT-23 小封装中提供了 100V 耐压与 1A 电流能力，兼顾体积与性能，适合需要高压耐受且受限于空间的通用放大与开关场合。选用时请参考完整数据手册以获取详细极限参数、特性曲线和封装图。
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