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cjiang FNTC0402X103F3950FB
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- cjiang FNTC0402X103F3950FB
- Type
- CJIANG
- Minimum package
- 10000 圆盘
Technical parameters
- Power
- 100mW
- Electronic Component
- Electronic Component
- Electronic Component
- CJIANG
- Electronic Component
- FNTC0402X103F3950FB
- Electronic Component
- 1
- Electronic Component
- 0.5mm
- Package
- 0402
- Electronic Component
- NTCThermistor Resistor
- Electronic Component
- 0.013g
- Electronic Component
- 1mm
- Electronic Component
- 10kΩ
- Electronic Component
- 0.5mm
- Electronic Component
- 1
- B
- ±1%
- Electronic Component
- BM0257699628
- Operating Temperature
- 40℃~+125℃
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
FNTC0402X103F3950FB 产品概述
一、产品简介
FNTC0402X103F3950FB 是长江微电（cjiang）推出的一款高精度贴片型 NTC 温度传感元件，阻值标称 10kΩ（25℃），采用 0402（1.0 × 0.5 × 0.5 mm）超微型封装，适合高密度 PCB 和空间受限场合的温度检测与补偿应用。
二、主要电气与热参数
- 标称阻值：10 kΩ @ 25℃
- 阻值精度：±1%
- B 值（25℃/50℃）：3950 K（B 值精度 ±1%）
- B 值（25℃/85℃）：3990 K
- 最大脉冲功率：100 mW（脉冲条件）
- 最大稳态电流（25℃）：310 μA（对应稳态功率约 1 mW）
- 耗散系数（D）：1 mW/℃（自加热特性，用于估算温升）
- 热时间常数：3 s
- 工作温度范围：-40℃ ~ +125℃
说明：器件标注的 100 mW 为短脉冲能力，长期稳态功率受耗散系数限制较低。若需控制自加热在 1℃ 以下，应保持耗散功率 <1 mW，因此稳态电流不应超过约 310 μA（I = sqrt(P/R)）。
三、阻温特性与计算
NTC 电阻随温度按指数关系变化，可近似用斯特林方程表示： R(T) = R25 × exp[B × (1/T - 1/T25)] 其中 T 单位为 Kelvin（T25 = 298.15 K）。按标称 B 值估算，器件在 50℃ 时阻值约 3.6 kΩ，85℃ 时约 1.06 kΩ（近似值，受公差与 B 值细微差异影响）。
四、应用场景
适用于手机、穿戴设备、物联网终端、电源管理温度监控、热失控保护、温度补偿电路及需要高精度小体积温度传感的工业与消费电子产品。
五、使用建议与注意事项
- PCB 布局：0402 尺寸对焊盘与回流工艺敏感，建议按厂商推荐的焊盘和回流曲线装配，避免受力与热冲击。
- 测量电路：优选低激励电流的电压分压或恒流源方案，避免自加热引入测量误差。
- 自加热控制：利用耗散系数估算功率与温升关系，长期测量应将功率控制在 1 mW 附近或更低。
- 响应时间：3 s 的热时间常数适合多数慢变温度测量场合，不适合超快速瞬变测温要求。
- 环境限制：工作温度上限 125℃，超过此温度可能影响器件稳定性与寿命。
FNTC0402X103F3950FB 以其高阻值精度与稳定的 B 值，结合 0402 超小封装，是对体积、精度和互换性有较高要求场合的理想选择。若需批量参数曲线或 PCB 焊盘建议图，请提供需求以便进一步支持。
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