NTC Thermal Resistor MF73
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Product Overview
Positive Temperature Coefficient Thermistor (PTC):
Material: PTC thermistors are generally made of barium titanate as the main material, with appropriate amounts of rare earth elements added, and are sintered at high temperatures.
Working Principle: At low temperatures, conductive electrons can easily cross the grain interface, resulting in a low resistance value; when the temperature rises to the Curie point, the internal electric field is disrupted, and the resistance value increases sharply.
Application: PTC thermistors have constant temperature, temperature adjustment, and automatic temperature control functions, and are suitable for overheat detection in electrical devices such as motors.
Negative Temperature Coefficient Thermistor (NTC):
Material: NTC thermistors are generally made of metal oxide materials such as cobalt oxide and nickel oxide.
Working principle: These metal oxides have relatively few electrons and holes, resulting in high resistance. As the temperature increases, the number of electrons and holes increases, and the resistance decreases. Applications: NTC thermistors are widely used in temperature measurement and control due to their high sensitivity, wide operating temperature range, and small size.
Parameter
| Part NO (R25 MF73) | Maximum steady-state current (A) | Approximate resistance value at maximum current (Ω) | Dissipation coefficient (Mw/℃) | The thermal time constant is approximately (S) | operating temperature (℃) | Chip diameter |
|---|---|---|---|---|---|---|
| 1/9 | 1 | 9 | 3 | ≧13 | ≦65 | φ13mm |
| 1.3/9 | 1.3 | 9 | ||||
| 1.5/9 | 1.5 | 9 | ||||
| 2.5/8 | 2.5 | 8 | ||||
| 3/8 | 3 | 8 | ||||
| 4/7 | 4 | 7 | ||||
| 5/7 | 5 | 7 | ||||
| 6/6 | 6 | 6 | ||||
| 7/6 | 7 | 6 | ||||
| 8/6 | 8 | 6 | ||||
| 10/6 | 10 | 6 | ||||
| 12/5 | 12 | 5 | ||||
| 15/4 | 15 | 4 | ||||
| 16/4 | 16 | 4 | ||||
| 20/4 | 20 | 4 | ||||
| 30/3.5 | 30 | 3.5 | ||||
| 47/3 | 47 | 3 | ||||
| 60/2.5 | 60 | 2.5 | ||||
| 120/1.8 | 120 | 1.8 | ||||
| 1.3/10 | 1.3 | 10 | 3.5 | ≧22 | ≦75 | φ15mm |
| 1.5/10 | 1.5 | 10 | ||||
| 2/9.5 | 2 | 9.5 | ||||
| 2.5/5 | 2.5 | 10 | ||||
| 3/9 | 3 | 9 | ||||
| 5/8 | 5 | 8 | ||||
| 6/7 | 6 | 7 | ||||
| 7/7 | 7 | 7 | ||||
| 8/7 | 8 | 7 | ||||
| 10/7 | 10 | 7 | ||||
| 12/6 | 12 | 6 | ||||
| 15/6 | 15 | 6 | ||||
| 16/6 | 16 | 6 | ||||
| 20/6 | 20 | 6 | ||||
| 30/5 | 30 | 5 | ||||
| 47/4 | 47 | 4 | ||||
| 120/2.5 | 120 | 2.5 | ||||
| 0.7/16 | 0.7 | 16 | 5 | ≧28 | ≦110 | φ20mm |
| 1/16 | 1 | 16 | ||||
| 1.5/15 | 1.5 | 15 | ||||
| 2/14 | 2 | 14 | ||||
| 2.5/13 | 2.5 | 13 | ||||
| 3/12 | 3 | 12 | ||||
| 4/12 | 4 | 12 | ||||
| 4.7/12 | 4.7 | 12 | ||||
| 5/11 | 5 | 11 | ||||
| 6/12 | 6 | 12 | ||||
| 6.8/10 | 6.8 | 10 | ||||
| 7/9 | 7 | 9 | ||||
| 8/9 | 8 | 9 | ||||
| 10/8 | 10 | 8 | ||||
| 12/7.5 | 12 | 7.5 | ||||
| 15/7 | 15 | 7 | ||||
| 18/7 | 18 | 7 | ||||
| 20/7 | 20 | 7 |
Application Circuit Diagram
Product Circuit Diagram
Structure and Dimension
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