1.Introduction ：
MF55series insulation film NTC thermistor is a new product that our company have recently researched and it is made by whole-newly technique , and it has the virtue of novel configuration and good security and good coherence. It can be used in such occasions as temperature measurement and control and compensation.

2.Application：
Computer, printer and home appliances, and so on .

3.Characteristics：
1. Insulation film coated, fast response and high sensation;
2. High stability and reliability;
3. superior electrical insulation;
4. High precision of resistance value;
5. it is possible to use with safety in ambience that might contact with electrodes;
6. So small, light and solid in structure as to be convenient for auto mounting (to a printed circuit board).

4.Main techno-parameter:
1. Rated zero power resistance @25℃(R25)：10KΩ～100KΩ；
2. Allowance tolerance of R25:±1%；±2%；±3%；±5%；
3. Range of B value (B25/50℃): 3380K；3950K；
4. Allowance tolerance of B-value: ±0.5%；±1%；±2%；
5. Dissipation coefficient: 0.7mW/℃（in still air）；
6. Thermal time constant: ≤5S（in still air）；
7. Operating temperature: -30～+125℃
8. Rating power: <3.5mW

① MF55 insulation film NTC thermistor
② resistance：103……10KΩ
③ F：±1%；G：±2%；H：±3%；J：±5%；
④ B-value：3380K；3950K
⑤ Length of lead： L：15mm；25mm；50mm。

Dimensions :
Code Material
① Polyimede film
② Chip
③ Phosphorcopper frame

6.Dimensions：

7.Matters needing attention:
1). Don't fold lead frame of thermistor at random in case of bad resistance value caused by the strip between chip and lead frame;
2). Don't let temperature exceed 300℃ when soldering, and the time not exceed 0.5second at better;
3). You should use heat wind gun when adding pyrocondensate pipe and the temperature should be controlled by 120℃;
4). You should use constant temperature iron when soldering, the head of iron should be flat; one hand takes thermistor, the other takes wire and doing contact soldering, it can enhance manufacture efficiency and shorten the soldering time;
5). Especial notice: don't touch chip by hands (namely the top of thermistor).