WMSIC Electronic Components

DIODES FMMT491QTA

ModelFMMT491QTA
PackageSOT-23
BrandDIODES
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

20 specifications

Core information

Product name
DIODES FMMT491QTA
Type
DIODES
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
DIODES
Electronic Component
FMMT491QTA
Electronic Component
1
Package
SOT-23
Electronic Component
1 NPN
Electronic Component
Transistor(BJT)
Electronic Component
0.016g
Electronic Component
1
Electronic Component
BM0000285856
Operating Temperature
55℃~+150℃
Transistor Type
NPN
Frequency(f T)
150MHz
Power Dissipation(Pd)
500mW
Electronic Component
Electronic Component

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

FMMT491QTA 产品概述

一、产品简介

FMMT491QTA 是一款高性能的表面贴装型 NPN 三极管,专为满足各种电子产品的低功耗和高效能需求而设计。该型号由知名厂商 DIODES(美台)生产,具有优良的电流处理能力和宽广的工作温度范围,适合用于电源管理、信号放大和开关应用等多种场景。

二、基础参数

  1. 安装类型: 表面贴装型(SMD),使其能够与现代电路板焊接工艺兼容,便于自动化生产。
  2. 电流 - 集电极 (Ic): 最大可承受 1A 的电流,因此适合用于中等功率的电子设备中。
  3. 电流 - 集电极截止 (Ic cut-off): 在 100nA 处保持良好的截止特性,适用在低功耗监测应用中。
  4. 工作温度范围: 从 -55°C 到 150°C,确保在各种极端环境下稳定工作,适合工业及军工领域。
  5. 频率 - 跃迁: 拥有高达 150MHz 的频率响应能力,适用于高速信号处理,满足多媒体设备和无线通信的需求。
  6. 功率 - 最大值: 500mW,提供高度的能量转换效率,保证元器件在高负载情况下的稳定性。
  7. 电压 - 集射极击穿 (Vce cut-off): 最大承载 60V 的电压,适应广泛的电源设计。
  8. 饱和压降 (Vce(sat)): 在 1A 负载下,饱和压降仅为 250mV,这表示较低的功耗损失,提高整体电路的效率。
  9. DC 电流增益 (hFE): 最小值为 100,在 500mA 负载时提供很好的电流放大特性,使其在信号放大应用中具有良好的表现。

三、产品优点

  1. 高性能: FMMT491QTA 的高电流增益和低饱和压降使其在各种电子应用中表现出色,特别是在高频开关和放大电路中。
  2. 优异的温度适应性: 无论是在高温还是低温环境下,该三极管均能稳定工作,降低了在极端条件下发生故障的风险。
  3. 紧凑封装: SOT-23 封装的设计使其在空间有限的电路板上依然可以高效使用,是现代微型化产品的理想选择。
  4. 可靠性和稳定性: DIODES 品牌的声誉和历年的市场表现为这一产品提供了高度的可靠性,使其适用于关键领域的设计。

四、应用场景

FMMT491QTA 特别适合以下应用:

  • 开关电源: 可用于 DC-DC 转换器及其他需要高效率开关控制的电源管理应用。
  • 音频放大器: 其低失真和高线性度使其在音频放大信号处理上表现出色。
  • 工业控制: 包含量测设备与自动化控制系统中的信号放大与开关功能。
  • 无线通信: 在 RF 及微波信号处理中的高频应用,以及馈电和信号调制。
  • 消费电子: 用于智能手机、平板电脑和其他个人电子设备中的信号处理阶段。

五、总结

FMMT491QTA 是一款与时俱进的高性能 NPN 三极管,通过其卓越的电气特性和广泛的应用范围,在多个电子设计领域中提供解决方案。不论是为现代化的消费电子产品还是为严苛环境下的工业设备提供支持,这款三极管都是理想的选择。随着科技的进步,FMMT491QTA 将继续在提效、节能和性能优化方面发挥重要作用,帮助工程师与设计师迎接未来的挑战。

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