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2.5D-13 PDF预览

2.5D-13

更新时间: 2022-02-26 12:22:27
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音特电子 - YINT /
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描述
MF72 power direct heat type negative temperature coefficient thermistor

2.5D-13 数据手册

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值 得 信 赖 的 电 子 电 路  
Negative Temperature Coefficient 负温度系数热敏电阻  
Model NoMF72 功率型热敏电阻系列  
过 电 流 过 电 压 保 护 专 家  
power resistance value RN' shall be measured. (See IEC68-2-20  
/GB2423.28 Tb)  
根据IEC68-2-21(GB2423 .29)试验U 进行试验。  
试验 Ua:拉力10N,持续10 S;  
试验 Ub:弯曲90°,拉力5N,持续10 S;  
扭转 180°,拉力5N,持续10 S。  
在 25±2℃条件下恢复4~5 h 后,复测额定零功率电阻RN'  
Fasten the body and apply a force gradually to each lead until  
10N and then keep for 10sec, Hold body and apply a force to  
each lead until 90°slowly at 5N in the direction of lead axis  
and then keep for 10sec, and do this in the opposite direction  
repeat for other terminal. After recovering 4~5h under 25±  
2℃, the rated zero power resistance value RN' shall be  
measured.  
无损坏  
引出端强度  
Strength of lead  
terminal  
No break out  
ΔR/RN ≤20%  
(ΔR =∣RN-RN'∣)  
(See IEC68-2-21/GB2423.29 Ua / Ub)  
电气性能ELECTRICAL CHARACTERISTICS  
指标项目Item  
技术要求Specification  
测试条件/方法Test Conditions & Methods  
环境温度 TA: 25℃±1℃  
测试电压: 1.5VDC  
额定零功率电阻  
Rated Zero-Power  
Resistance  
在恒温TA 条件下,放置1~2 小时后测得阻值RN。  
Ambient temp. Range:25℃±1℃(TA).  
20±20%  
Testing voltage: 1.5VDC  
RN (Ω)  
After placing for 1~2 hours under TA, the resistance value  
shall be measured  
在特定的环境温度下耗散系数(δ)为热敏电阻电功率消耗(ΔP)  
与本体温度变化量 (ΔT)的比值.  
热耗散系数δ(mW/℃)  
Thermal Dissipation  
Constant  
The thermal dissipation constant(δ) could be calculated by  
the ratio of a change in power dissipation(ΔP) of the  
thermistor to a change in temperature(ΔT) of the thermistor  
at a specified ambient temperature  
≥6  
热时间常数(τ)为在零功率条件下,热敏电阻的温度下降到其  
最初温度与最终温度之差为63.2% 时所需要的时间  
The time(τ shall be measured within which the temperature  
change of NTC thermistor is reached at 63.2% of the ambient  
temperature change under zero power condition  
R1 , R2 分别为 T1 , T2 温度下的零功率电阻  
R1 , R2 is zero-power resistance at T1 , T2  
T1 = 298.15 K(25℃) T2 = 323.15 K(50℃)  
热时间常数τ(s)  
≤20  
Thermal Time Constant  
2800±10%  
B=T1T2/( T2- T1) ×  
Ln  
材料常数  
Material Constant B  
(R1/R2)  
无可见损伤  
环境温度:25℃±2℃Ambient temp. Range.  
测试电流0.5A Testing Current  
最大稳态电流(A)  
Max.Steady State  
Current  
visible mechanical  
damage.  
ΔRN / RN ≤20%  
(ΔR =∣RN-RN'∣)  
可靠性试验(周期性检测项目)Reliability Test  
NOTE: ALL DATA AND SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE  
ALL PRODUCTS COMPATIBLE WITH ROHS  
更多详细信息请登陆 www.yint.com.cn  

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