WMSIC Electronic Components

RUILON NTC50D-9 NTC50D

ModelNTC50D-9
PackageThrough-hole, P=7.5mm
BrandRUILON
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
RUILON NTC50D-9
Type
RUILON
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
NTC50D-9
Electronic Component
1
Electronic Component
5.5mm
Package
Through-hole, P=7.5mm
Electronic Component
NTCThermistor Resistor
Electronic Component
0.869g
Electronic Component
50Ω
Pitch
7.5mm
Electronic Component
1
(φD)
9mm
Electronic Component
BM0257695921
Operating Temperature
40℃~+175℃
Resistor
±20%
Electronic Component
11mW/℃

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

NTC50D-9 产品概述

一、产品简介

NTC50D-9 是 RUILON(瑞隆源)推出的一款低阻值负温度系数热敏电阻(NTC),采用插件封装(P=7.5mm)。该器件在25℃时标称阻值为50Ω,温度特性适用于温度补偿、启动限流和温度检测等场合。样品检测信息:校验通过!

二、主要技术参数

  • 标称阻值(25℃):50 Ω(±20%)→ 实际范围约 40 ~ 60 Ω
  • B值(25℃/50℃):2950 K(用于计算温度依赖性)
  • 电阻精度:±20%
  • 最大稳态电流(25℃):1 A(长期工作电流上限,注意热管理)
  • 工作温度:-40 ℃ ~ +175 ℃
  • 耗散系数(热功率常数):11 mW/℃(即 0.011 W/℃)
  • 热时间常数:35 s(达到稳态温升约63%所需时间)
  • 引脚间距:7.5 mm(插件式,便于安装)
  • 封装:插件,P = 7.5 mm
  • 品牌:RUILON(瑞隆源)

三、性能要点与含义说明

  • 阻值与精度:±20% 的公差表明本型号更适合限流或温度补偿类应用,而非高精度温度测量。
  • B值(2950 K):用于用经验公式估算不同温度下的电阻变化,可用于仿真和设计匹配。
  • 耗散系数 11 mW/℃:表示器件在静态条件下每吸收 1 mW 功率会引起约 0.091°C 的温升(更常用换算为 P = ΔT × δ,其中 δ = 11 mW/°C)。例如器件吸收 0.55 W 时,理论温升约 50°C(0.55 W / 0.011 W/°C ≈ 50°C)。
  • 热时间常数 35 s:热响应属于中等速度,短脉冲会使温度瞬时上升较小,长时间或重复脉冲会导致显著自加热并使电阻下降。

四、典型应用场景

  • 启动限流 / 充电器与电源的浪涌电流抑制(inrush current limiting)
  • 电机/继电器/变压器的冷启动保护
  • 电池充放电系统中对瞬态电流的缓冲
  • 大功率 LED 驱动与照明电源的浪涌抑制
  • 温度补偿元件(对温度变化作粗略补偿)

五、选型与使用建议

  • 电流限制:尽管标称最大稳态电流为1 A,但器件在冷态时阻值较高,初期通电会产生较大功率损耗。需确保启动瞬间和稳态条件下的自热不会使器件超过允许温度。
  • 功率与散热:基于耗散系数进行估算,设计时应考虑周围环境温度和散热条件,必要时采取散热或减少持续功率。
  • 脉冲电流:NTC 对短时脉冲具有自加热特性,短脉冲可承受较高峰值电流,但应遵循制造商的脉冲能力规范(如有)。
  • 精度考虑:若用于温度测量与控制,需考虑 ±20% 的较大初始偏差,且需校准或采用补偿手段。

六、安装与焊接注意事项

  • 插件式设计,建议使用留空间的孔距为 7.5 mm,确保机械强度与电气绝缘。
  • 防止长时间高温焊接影响器件性能,推荐使用快速手工或波峰焊工艺,并控制峰值温度与时间。
  • 存储与清洁:避免潮湿、高温及腐蚀性气体环境,搬运时防止机械应力损伤引脚。

七、常见问题与调试建议

  • 若器件在使用中出现阻值异常增大或发热过高,检查是否超过最大稳态电流或散热不足。
  • 在设计样机阶段,建议测量器件在实际电流下的稳态温度与电阻,以确定工作点并防止过热失效。

如需该型号的详细曲线(R‑T、I‑R、脉冲能力)或样品测试报告,可联系 RUILON(瑞隆源)供应商获取更多数据支持。

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