MJD系列NTC熱敏電阻是將熱敏電阻芯片封在玻璃管中的二極管式熱敏電阻，具有高精度和高穩(wěn)定性。 特點： 1、玻璃封裝、耐熱、穩(wěn)定性、性高。 2、體積小、重量輕、經(jīng)濟適用。 應(yīng)用范圍： 1、溫度傳感器。 2、電飯煲、電烤箱、刨冰機、洗碗機等。 3、手機電池、充電器等。 1、總論（Scope） 本說明包括產(chǎn)品外形尺寸、性能及出廠檢驗標準，產(chǎn)品型號、規(guī)格。 This specification deals with shape, dimensions, characteristics, inspection standard etc. 2、說明（Specifications） 2.1元件： 熱敏電阻，型號:MJD-5.5K-3530-1 Element: Thermistor, type: MJD-5.5K-3530-1 2.2外形尺寸(單位：mm) Shape and dimensions 2.3性能 Characteristics (1)電性能Electrical characteristics （a）電阻值（Resistance value）: R（25°C）=50KΩ±1% (b) B值（B value）: B=3950 （由25°C、50°C電阻值計算得出） (calculated from resistance value at 25°C and 50°C) (c)絕緣電阻Insulation resistance 100MΩ or over by DC500V megger (between glass and lead wire) (2) 熱時間常數(shù)Thermal time constant (τ): τ≤20s (靜止空氣中 in still air) (3) 熱耗散系數(shù)Thermal dissipation constant (δ): δ≥2.0Mw/°C (靜 止空氣中in still air) (4) 使用溫度范圍Operating temperature range:-50~ 260°C 3、性(Reliability) 3.1高溫存放 high Temp. storage：250°C環(huán)境中放置1000小時阻值變化不大于±2%。High Temp. storage：Stored under 250°C for 1000 hours, the change rate of the R value is within ±2%. 3.2低溫存放 Low Temp. storage：-40°C環(huán)境中放置1000小時阻值變化不大于±2%。Low Temp. storage：Stored under -40°C for 1000 hours, the change rate of the R value is within ±2%。 3.3耐濕熱 High temperature and humidity：60°C 95%RH存放1000小時后阻值變化不大于±2%。High temperature and humidity：Stored in 60°C 95%RH for 1000 hours, the change rate of the R value is within ±2%. 3.4耐溫度沖擊 Thermal shock:熱敏電阻經(jīng)歷如下溫度循環(huán)100次后,阻值變化不大于±2%。Thermal shock: keep the thermistor in following temperature cycling test for 100 times, the change rate of the R value is within ±2%. -40°C10分鐘----常溫5分鐘----200°C10分鐘----常溫5分鐘 -40°C10mins----25°C 5mins----200°C10mins----25°C 5mins 3.5振動Vibration:元件經(jīng)受加速度10g,振幅1.5mm頻率從10Hz到500Hz X、Y方向各15分鐘后應(yīng)無損傷,阻值變化不大于±2%。Vibration: with 10g acceleration, 1.5mm amplitude, the frequency changed from 10Hz to 500z both in X, Y direction for 15 mins, the thermistor is without damage and the change rate of the R value is within ±2%. 3.6引線強度 Pulling :引線沿軸向施加9.8N拉力并持續(xù)60秒后,外觀無損傷，阻值變化不大于±2%。Pulling : pull the leads with 9.8N for 60 seconds, no damage to the appearance and the change rate of the R value is within ±2%. 3.7 跌落 Fall down ：從1米高度自由落下10次在規(guī)定的木板上外觀無損傷，阻值變化不大于±1%。Falling down ：Free falling down from 1m height to specific board for 10 times, no damage to the appearance, and the change rate of the R value is within ±2%.