WMSIC Electronic Components

SIT SIT1021QTK/1 SIT1021QTK

ModelSIT1021QTK/1
PackageDFN3x3
BrandSIT
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SIT SIT1021QTK / 1
Type
SIT
Minimum package
6000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SIT
Electronic Component
SIT1021QTK/1
Electronic Component
1
Package
DFN3x3
Type
Transceiver
Electronic Component
LIN Transceiver
Electronic Component
0.053g
Electronic Component
1
Features
Bus;;; TXD; Bus; Low Power
Electronic Component
BM0229963412
Operating Temperature
40℃~+125℃
Operating Voltage
5.5V~27V
Receiver
1
Data
20Kbps
Driver
1

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

SIT1021QTK/1 产品概述

一、产品简介

SIT1021QTK/1 是芯力特(SIT)推出的一款单驱单收(1 driver / 1 receiver)收发器,工作电源范围宽(5.5V ~ 27V),数据速率支持最高 20 kbps,工作温度范围达 -40℃ 至 +125℃,采用紧凑的 DFN3x3 封装。该器件面向低速串行总线通信场景,兼顾工业与汽车级应用对电压耐受性与温度稳定性的要求。

二、主要特性

  • 宽电源范围:支持 5.5V 至 27V,适配 12V/24V 系统电源环境。
  • 低速通信:数据速率至 20 kbps,适用于 LIN 等低速总线或类似应用。
  • 极宽温度范围:-40℃ 至 +125℃,满足汽车与工业级温度要求。
  • 小型封装:DFN3x3 体积小、散热面良好,便于高密度系统集成。
  • 单通道配置:1 驱动器 + 1 接收器,适合点对点或小节点拓扑设计。

三、典型应用

  • 汽车车身控制网络(如车窗、座椅、门控模块的低速通信)
  • 工业传感器与执行器的串行连接
  • 车载子模块与网关之间的通信接口
  • 低速点对点数据链路与诊断接口

四、封装与机械要点

DFN3x3 封装占板面积小,建议在 PCB 布局中预留焊盘与热焊盘(exposed pad),以保证良好散热和机械牢固性。注意按照封装推荐的回流焊工艺参数进行焊接,避免因温度过高影响器件可靠性。

五、设计与布局建议

  • 电源端应在器件近侧放置去耦电容(例如 0.1µF 与 1µF 并联)以抑制瞬态干扰。
  • 总线端建议根据实际系统增加系列电阻或保护电路以限制浪涌和反射。
  • 若用于汽车或工业环境,考虑在总线上加入瞬态抑制(TVS)器件与滤波网络以提高抗干扰能力。
  • 布局时将信号地与功率地合理分离,保证暴露焊盘通过多焊盘过孔与底层散热层连通。

六、可靠性与使用注意

SIT1021QTK/1 的工作温度和电压范围使其适合严苛环境,但在实际设计中仍需关注总线短路、过压与电磁干扰等工况。建议在系统级做相应的故障保护策略(限流、熔断、软件监测等),并在量产前进行温度循环、振动与电气应力测试以验证整机可靠性。

总结:SIT1021QTK/1 以其宽电压、宽温度和小型封装的组合,为低速串行通信提供了稳定、易集成的硬件方案,特别适合要求可靠性和空间受限的汽车与工业应用场景。

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