WMSIC Electronic Components

ALLEGRO A1101LUA-T A1101LUA

ModelA1101LUA-T
PackageTO-92
BrandALLEGRO
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 24+

Available for RFQ

Technical data

Product details

17 specifications

Core information

Product name
ALLEGRO A1101LUA-T
Type
ALLEGRO
Unit
Electronic Component
Minimum package
4000

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
A1101LUA-T
Electronic Component
1
Package
TO-92
Electronic Component
Hall Switch
Electronic Component
0.136g
Electronic Component
1
Electronic Component
BM0258749082
Operating Temperature
40℃~+85℃
Operating Voltage
3.8V~24V
Operating Current
4.1mA
Electronic Component
4000

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

A1101LUA-T 产品概述

一、产品简介

A1101LUA-T 是 Allegro(美国埃戈罗)推出的一款小型高可靠性的霍尔效应磁敏开关。器件采用 TO-92(SIP3)直插封装、适合 PCB 插装,面向位置、接近和速度检测等低成本、耐用的磁感应场合。器件以数字开关形式输出,对磁场有明确的动作阈值,适合替代机械接点实现无接触开关功能。

二、主要技术参数

  • 工作电压(Vcc):3.8 V ~ 24 V(典型);器件可耐受最高 30 V DC(Usup 上限)。
  • 工作电流(Icc):典型 4.1 mA(静态电流,具体值请参考实际测试条件)。
  • 磁场灵敏度:响应范围约 10 ÷ 175 Gs(高斯),不同灵敏度等级/批次存在差异,应按应用所需阈值选型。
  • 工作温度:-40 ℃ ~ +85 ℃(工作);存储/耐受温度可达 -40 ℃ ~ +150 ℃(参考包装与存储规范)。
  • 传感类型:霍尔(Hall)数字开关(单极/开关型,见下文说明)。
  • 封装:TO-92(SIP3),适合通孔焊接到 PCB。

三、封装与引脚

A1101LUA-T 采用常见的 TO-92 小型三脚直插封装(SIP3),便于在通用 PCB 上布局。标准引脚排列可用于直接替换同类直插霍尔开关。建议在 PCB 布局时预留足够的焊盘和散热空间,并按厂商资料核对引脚定义(Vcc、GND、OUT)。

四、典型电气特性与使用建议

  • 输出特性:器件为数字开关型霍尔传感器,当靠近自极性磁场达到动作阈值时输出跳变。输出通常为开路(开集电极/开漏)或能驱动 TTL/CMOS 兼容输入;具体形式请参照原厂数据手册。
  • 上拉电阻:若为开路输出,需外接上拉电阻到 Vcc,常用范围 4.7 kΩ ~ 47 kΩ,典型值为 10 kΩ。
  • 去耦与滤波:建议在 Vcc 与 GND 之间靠近器件焊盘放置 0.1 μF 陶瓷去耦电容,以抑制开关瞬变与系统噪声。
  • 磁场与极性:根据器件为单极开关的特性,须使用与器件动作极性匹配的磁体(N 或 S 极靠近敏感面)。磁体到器件的距离、磁强分布会影响动作点,应在实际结构中验证。
  • 供电与保护:尽量避免长期超过 24 V 的工作电压,器件耐受最高 30 V(短时),并在供电线路上考虑反接与浪涌保护。

五、典型应用场景

  • 位置检测与限位开关(替代机械微动开关)
  • 转速/速度检测(低速脉冲检测、编码器辅助)
  • 电机换相与位置反馈(直流无刷电机辅助)
  • 用户界面磁性开关(安全盖、门磁感应)
  • 小功率接近/落位感应与计数应用

六、选型要点与替代建议

在选型时应重点确认:动作/释放磁场(Gs)、输出类型(开路/推挽)、工作电压范围与工作温度。A1101LUA-T 属于通用单极霍尔开关系列,若需要更高灵敏度、更宽温度或不同输出驱动能力,可参考 Allegro 的其它 A110x 系列或同行厂商的等效型号。批量采购时请向供应商核实元件的灵敏度等级和出厂测试条件。

七、安装与注意事项

  • 焊接:采用通孔焊接工艺,注意控制焊接温度与时间,避免封装过热。
  • 布局:传感器面向磁体方向需留出稳定且可重复的位置,避免邻近磁性元件或强电流导线干扰。
  • EMC/EMI:在高电磁干扰环境下,适当增加滤波与屏蔽,并保证去耦电容紧贴供电引脚。
  • 测试验证:在目标装配状态下验证动作距离、迟滞、响应稳定性与温度漂移,确保实际应用满足设计要求。

总结:A1101LUA-T 以其小巧的 TO-92 封装、宽广的工作电压范围与可靠的霍尔开关特性,适合多种工业与消费类无接点磁性检测应用。选型与设计时关注磁场强度与极性、供电去耦与输出接口形式,可获得稳定、长期可靠的检测性能。若需完整电气参数与典型波形,请参考 Allegro 官方数据手册。

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