1、Scope
This specification deals with shape, dimensions, characteristics, inspection standard etc. 本说明包括产品外形尺寸、性能及出厂检验标准，产品型号、规格。
2、Specifications
MF51-104F3950FA-1.25 | |||||
NTC Thermistor | Resistance value | B value | |||
100kΩ | ±1% | 3950 | ±1% | B25/50 | |
3、Shape and dimension外形尺寸(Unit：mm)
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1.25±0.2 |
30±1 |
Glass |
Tinned dumet wire |
Φ0.2 |
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4、Electrical characteristics电性能
| Item 项目 | Symbol符号 | Test Condition 测试条件 | Min. 最小值 | Nor. 正常值 | Max. 最大值 | Unit 单位 |
a | Resistance at25°C 25°C电阻值 | R25 | 25±0.05°C | 99 | 100 | 101 | kΩ |
b | Bvalue B值 | B25/50 | B= | 3910 | 3950 | 3990 | k |
c | Insulation resistance 绝缘电阻 | / | 500VDC | 50 | / | / | MΩ |
d | Thermal time constant 热时间常数 | τ | in still air 静止空气中 | / | / | 6 | sec |
e | Thermal dissipation constant 热耗散系数 | δ | in still air 静止空气中 | 1.0 | / | / | mw/°C |
f | Operating temperature range 使用温度范围 | / | / | -50 | / | 350 | °C |
5、Reliability可靠性
| Item 项目 | Specification 技术说明 | Method of Examination 测试条件及方法 |
5.1 | high Temp. storage高温存放 | *ΔR25/ R25≤±2% | After storeage at250°Cfor 1000hrs 250°C环境中放置1000小时 |
5.2 | Low Temp. storage 低温存放 | After storeage at-40°Cfor 1000hrs -40°C环境中放置1000小时 | |
5.3 | High temperature and humidity 耐湿热 | After storeage at60°C95%RH for 1000hrs 60°C 95%RH存放1000小时 | |
5.4 | Thermal shock 耐温度冲击 | *ΔR25/ R25≤±2%
| 100 cycles of following sequence -40°C 10min.---5min. room temp. ---200°C10min.---5 min. room temp. 经历如下温度循环100次 -40°C10分钟---常温5分钟---200°C10分钟---常温5分钟 |
5.5 | Vibration 振动 | * no visible damage 无损伤 *ΔR25/ R25≤±2% | After vibrate test , Frequence 10-500Hz 15min.max amplitude1.5mm ,in X and Y directions 振幅1.5mm频率10Hz到500Hz 元件受振动试验X、Y方向各15分钟 |
5.6 | Pulling 引线强度 | * no visible damage 无损伤 *ΔR25/ R25≤±2% | After applling a force of 2.0N in the axial direction of thermistor, and maintain the force for 10sec. 引线方向施加2.0N拉力，并持续10秒 |
5.7 | Fall down 跌落 | * no visible damage 无损伤 *ΔR25/ R25≤±2% | After dropped freely onto wood floor from 1 meter height for 10 times 从1米高度自由落下10次在规定的木板上 |
