Epoxy resin sealed temperature measuring type (MF52) thermistors were tested in two groups for stability.
The first group of components performs high-precision measurement of short-term reproducibility within a week.
The second group of components examined their drift in resistance values at room temperature for up to five or four months.
The measurement results show that its short-term and long-term stability can be compared with similar foreign products, which is enough to be used as a precision temperature sensing element in the medium temperature range. The first group of 16 thermistors tested were all produced by Beijing Glass Institute. The test was performed at the Thermal Engineering Department of the National Metrology Institute.
A: Dimension drawings

Second: Features:
 
1: MF5A series of products for the co-lead epoxy coating type
2: Wide resistance range: 1KΩ ~ 500KΩ
3: resistance and B value accuracy
4: test accuracy
5: small size, reflecting the speed
6: a long time to stabilize the work, good consistency
7: Operating temperature range: -40 ~ 125 ℃
Three: product model description
 
MF  5A  103  F  3950  
①　 ②   ③  ④   ⑤　     
①MF ¬ - negative temperature coefficient (NTC) thermistor code.
② 5A - epoxy package thermistor.
③103 - thermistor nominal resistance, said the resistance of the nominal resistance: 10 × 103 (Ω).
F = ± 1%, G = ± 2%, H = ± 3%, J = ± 5% of the resistance value (accuracy)
⑤ 3950 - resistance of the thermal index (material coefficient) B value: 395 × 10 (K)
Foru: MF5A series model specifications
Precautions:
      1) As the MF5A series of small size,Solder joints small,Lead at both ends can not withstand excessive tension.
      2) When welding,Please at least 5mm from the root of the lead wire welding,Welding time should be as short as possible.
Six: The main technical parameters

Product Application:
 
Air conditioning,Heating equipment,Medical equipment,Temperature control instruments,Electronic gifts,Electronic temperature hygrometer,Automotive temperature measurement,Electronic calendar,Rechargeable battery pack and charger.