WMSIC Electronic Components

SIT SIT1043QTK

ModelSIT1043QTK
PackageDFN4.5x3-14
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 SIT1043QTK
Type
SIT
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SIT
Electronic Component
SIT1043QTK
Electronic Component
1
Package
DFN4.5x3-14
Type
CAN-FDTransceiver
Electronic Component
CAN Transceiver
Electronic Component
0.217g
Electronic Component
1
Channel Count
1
Features
TXD;; Low Power
Electronic Component
BM0258808601
Operating Temperature
40℃~+125℃
Operating Voltage
4.5V~5.5V
Operating Current
65mA
Data
5Mbps

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

SIT1043QTK 产品概述

一、产品简介

SIT1043QTK 是芯力特(SIT)推出的一款基于 CAN-FD 的收发器,面向车载和工业现场总线应用。器件工作电压范围为 4.5V 至 5.5V,支持最高 5 Mbps 的数据传输速率,工作温度覆盖 -40℃ 至 +125℃,适应严苛环境。封装采用 DFN 4.5 x 3-14,适合紧凑 PCB 布局与自动化贴装。

二、主要电气参数

  • 类型:CAN-FD 收发器
  • 最高数据速率:5 Mbps
  • 工作电压:4.5 V ~ 5.5 V
  • 工作电流:典型 65 mA(工作态)
  • 静态电流:4 μA(休眠/低功耗态)
  • 工作温度:-40℃ ~ +125℃
  • 封装:DFN4.5x3-14

三、性能要点与设计影响

SIT1043QTK 在 5 V 电源下工作时,典型工作功耗约为 0.325 W(5 V × 65 mA),在散热设计和 PCB 热回流上需考虑该功耗带来的温升。静态电流仅 4 μA,适合实行低功耗策略的系统,便于在空闲时降低整车或设备的待机功耗。

四、典型应用场景

  • 汽车车身控制模块(BCM)、车载网关与控制单元(ECU)
  • 工业自动化现场总线节点、运动控制器与数据采集系统
  • 商用车辆通信与车载诊断(需要符合现场总线等差分传输要求的场合)
    该器件适用于需要 5 V 总线驱动能力、高温可靠性与 CAN-FD 更高带宽支持的场景。

五、布局与外部器件建议

  • 总线两端建议配置 120 Ω 差分终端电阻(根据系统拓扑而定)。
  • 建议在 CAN_H/CAN_L 与外部环境之间增加 TVS 二极管以提升浪涌与静电抗扰度。
  • 对高速边缘可考虑在 TX 与收发器之间使用小阻值串联抑制振铃;布线时保持差分对长度一致、走线靠近且配对。
  • DFN 封装应在地面上提供足够的散热焊盘,并保证接地回流良好以降低辐射与地弹。

六、可靠性与热管理

器件额定工作温度到 +125℃,适合车规级或高温工业环境使用。设计时需评估在最大环境温度与最高工作电流情况下的结温,必要时通过铜厚、散热铜箔或通孔散热方式降低结温,保证器件长期可靠性。

七、实施注意事项

  • 确认系统供电稳定在 4.5 V~5.5 V 范围内,避免欠压或过压引发总线故障。
  • 在多节点网络中,注意总线终端与偏置方案的统一,以免发生网络冲突或电平漂移。
  • 设计前参考厂方具体器件数据手册以获得完整引脚定义、电气特性和时序要求;在样机阶段做完整 EMC/ESD 与热试验。

八、总结

SIT1043QTK 提供了面向 5 V 系统的 CAN-FD 差分收发能力,兼顾高带宽传输(5 Mbps)与低功耗休眠(4 μA),并以 DFN4.5x3-14 紧凑封装利于现代 PCB 设计。其性能与温度等级使之在汽车与工业现场总线等对可靠性与带宽有较高要求的应用中具有竞争力。建议在产品开发初期结合实际系统拓扑与 EMC 要求做综合验证,以发挥器件最佳性能。

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