WMSIC Electronic Components

Sunlord SDNT1608X103F3435FTF

ModelSDNT1608X103F3435FTF
Package0603
BrandSUNLORD
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Sunlord SDNT1608X103F3435FTF
Type
SUNLORD
Minimum package
4000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
SUNLORD
Electronic Component
SDNT1608X103F3435FTF
Electronic Component
1
Electronic Component
0.8mm
Package
0603
Electronic Component
NTCThermistor Resistor
Electronic Component
0.036g
Electronic Component
1.6mm
Electronic Component
10kΩ
Electronic Component
0.8mm
Electronic Component
1
B
±1%
Electronic Component
BM0227299285
Operating Temperature
55℃~+125℃

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

SDNT1608X103F3435FTF 产品概述

一、产品概览

SDNT1608X103F3435FTF 是顺络(Sunlord)推出的贴片 NTC 热敏电阻,封装为 0603(公制 1608),标称阻值 10 kΩ(25℃),阻值容差 ±1%,B 值(25℃/50℃)为 3435 K,B 值精度 ±1%。器件针对精密温度测量与温度补偿场景优化,尺寸小、响应速度快,适合表面贴装工艺与体积受限的电子产品。

二、关键参数

  • 阻值(25℃):10 kΩ ±1%
  • B 值(25/50℃):3435 K ±1%
  • 功率额定:100 mW(最大)
  • 最大稳态电流(25℃):310 μA
  • 工作温度范围:-55℃ 至 +125℃
  • 耗散系数(热耗散):1 mW/℃
  • 热时间常数:5 s
  • 封装尺寸:0603(1.6 mm × 0.8 mm × 0.8 mm)
  • 品牌:Sunlord(顺络)

三、性能解读

  • 精度:阻值 ±1% 与 B 值 ±1% 提供较高的温度线性与测温精度,适合要求严格的温度采样与校准应用。
  • 自热与稳态电流:最大稳态电流 310 μA 对应 25℃ 下最大稳态功耗约 0.961 mW(I^2R),结合耗散系数 1 mW/℃,在该电流下自热约 0.96 ℃,因此在高精度测量中需注意驱动电流与自热影响。若以额定功率 100 mW 计算,器件会产生显著自热,实际使用中应避免接近额定极限并进行功率降额设计。
  • 响应速度:热时间常数 5 s 表示器件对环境温度阶跃变化达到 63% 的时间约为 5 秒,适合一般环境监测与温度控制,但对瞬态快速采样场景需考虑滤波与采样策略。

四、典型应用场景

  • 环境温度测量与监控(智能家居、环境传感器)
  • 电池组温度监测与充电管理(便携设备、电池管理系统)
  • 温度补偿电路(振荡器、传感器漂移补偿)
  • 工业与消费电子温度采样点(板级温度检测、热点监测)
  • 仪器仪表与医疗设备(需评估认证需求)

五、使用与选型建议

  • 自热控制:为降低自热误差,建议在测量电路中使用较小的偏置电流(远低于 310 μA)或采用短脉冲测量方式。
  • 线性化与算法:推荐使用 B 参数公式或 Steinhart–Hart 方程进行温度换算;B 参数换算公式:
    R(T) = R25 * exp[B * (1/(T+273.15) - 1/298.15)]
    其中 T 为摄氏温度,R25 为 25℃ 时阻值(10 kΩ)。
  • 阻抗匹配:ADC 采样建议配合合适的上拉/下拉电阻,兼顾分压误差与输入阻抗。常用上拉电阻范围视采样电流与带宽需求而定(例如 10 kΩ 附近为常用起点,需避免过大造成采样噪声)。
  • 工作温度:器件额定工作温度 -55℃~+125℃,选型时确认系统最高环境温度与长期漂移需求。

六、封装与 PCB 布局建议

  • 由于为 0603 小尺寸器件,采用常规 0603 焊盘并遵循厂商推荐的贴装规范进行回流焊即可。
  • 若测量环境温度(非 PCB 温度),应使器件与 PCB 其余铜箔隔离(减小热路径),并避免靠近大功率器件或散热片以减少误差。
  • 若用作板温采样,可设计短热路径并必要时加入热桥或热 vias 来提高热耦合。

七、测试与可靠性注意事项

  • 测试时建议用低电流源或脉冲方式以避免自热影响阻值测量。
  • 存储与焊接:遵循常规 SMD 器件的储存与回流焊温度谱,焊接完成后建议做必要的回流后老化与校准验证。
  • 环境可靠性:在高湿、腐蚀性环境或需严格认证的场合,应与厂商确认相关可靠性与认证资料。

八、典型计算举例

  • 在 0℃ 时,基于 B=3435K 与 R25=10 kΩ,可近似计算:R(0℃) ≈ 10 kΩ × exp[3435*(1/273.15 - 1/298.15)] ≈ 28.7 kΩ。
  • 在 85℃ 时,R(85℃) ≈ 1.46 kΩ(示例说明器件温度响应范围)。
  • 最大稳态电流 310 μA 在 25℃ 下对应最大电压约 3.1 V(V = I × R25),超过该电压将使器件进入自热降额区域,应避免长期这样工作。

总结:SDNT1608X103F3435FTF 以 0603 小封装、高精度阻值与 B 值为特点,适合体积受限且对温度精度有要求的应用场景。设计时需综合考虑自热、测量电流与 PCB 热耦合以获得最佳测温精度。若需器件封装图、焊盘建议或更详尽的可靠性数据,可联系顺络获取完整产品资料与数据手册。

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