OUR Products
The company has established production bases in Shandong and Guangdong, where it conducts research and development and production of current and temperature protection devices.
Feature
1) Small size, no lead wire, excellent welding performance, suitable for high-density surface mounting;
2) The surface of the porcelain body is sealed with glass, with good moisture resistance, high reliability and stability;
3) Wide range of working temperature: -40℃ ~ + 125℃;
4) High-precision resistance value and B value constant;
5) Meet the RoHS environmental protection standards.
Detail Information
| Beta Tolerance: | +/-1% | Resistance: | 20/30/47/50 Kohm |
| Resistor: | Thermal Resistor | Temperature Coefficient: | NTC |
| Customization: | Yes | Type: | Temperature Measurement NTC Thermistor |
| Allowable Tolerance: | ±1% ±2% ±3% ±5% | Usage: | Surge Current Protection |
| Highlight: | SMD NTC Thermistor, 0402 NTC Thermistor, Surge Current Protection NTC Thermistor | ||
Product Description
CMF0402222F3450FB Small Size 0402 High Precision SMD NTC Thermistor With High Reliability And Stability
0402 Series NTC Patch thermistor
NTC thermistor is a kind of manganese, cobalt, nickel metal oxides as raw material sintering of ceramic semiconductor thermal crystals, high sensitivity to temperature change, the zero power resistance decreases, with the body temperature rise with the temperature resistance exponential decline, temperature coefficient as high as (3~6% / ℃), small temperature changes can cause great resistance change. According to the R-T resistance value temperature curve of the thermistor, the precise resistance value of each temperature point can be calculated. In the circuit, the digital temperature correspondence can be realized through the resistance value, which is used for temperature measurement and control.
Applications
1)Temperature measurement: electronic thermometer, electronic perpetual calendar, electronic clock temperature display, electronic gifts, etc.;
2) Temperature control: temperature sensing of rechargeable batteries for mobile phones, car phones, laptops, smart wearable devices and other devices;
3)Temperature compensation: Temperature compensation for the transistor, IC, and crystal oscillator of the mobile communication equipment.
Main techno-parameter
| Part No | Resistance (25℃) (kΩ) | B-value (25/50℃)(K) | B-value (25/85℃)(K) | Allow working Current (25℃)(mA) | Thermal Dissipation Coefficient (mW/℃) | Thermal Time constant (s) |
| CMF0402102F3450FB | 1.0 | 3450±1% | 3500 | 1.00 | 1.0 | <3 |
| CMF0402152F3950FB | 1.5 | 3950±1% | 3987 | 0.81 | ||
| CMF0402222F3450FB | 2.2 | 3450±1% | 3500 | 0.67 | ||
| CMF0402222F3950FB | 2.2 | 3950±1% | 3987 | 0.67 | ||
| CMF0402332F3450FB | 3.3 | 3450±1% | 3500 | 0.55 | ||
| CMF0402332F3950FB | 3.3 | 3950±1% | 3987 | 0.55 | ||
| CMF0402472F3500FB | 4.7 | 3500±1% | 3545 | 0.46 | ||
| CMF0402472F3950FB | 4.7 | 3950±1% | 3987 | 0.46 | ||
| CMF0402682F3500FB | 6.8 | 3500±1% | 3545 | 0.38 | ||
| CMF0402682F3950FB | 6.8 | 3950±1% | 3987 | 0.38 | ||
| CMF0402103F3380FB | 10 | 3380±1% | 3435 | 0.31 | ||
| CMF0402103F3900FB | 10 | 3900±1% | 3935 | 0.31 | ||
| CMF0402153F3950FB | 15 | 3950±1% | 3987 | 0.25 | ||
| CMF040223F3950FB | 22 | 3950±1% | 3987 | 0.21 | ||
| CMF0402333F4050FB | 33 | 4050±1% | 4100 | 0.17 | ||
| CMF0402473F4050FB | 47 | 4050±1% | 4100 | 0.14 | ||
| CMF0402473F4485FB | 47 | 4485±1% | 4545 | 0.14 | ||
| CMF0402493F3937FB | 49.1 | 3937±1% | 3973 | 0.13 | ||
| CMF0402503F4100FA | 50 | 4050 | 4100±1% | 0.13 | ||
| CMF0402683F4150FB | 68 | 4150±1% | 4210 | 0.12 | ||
| CMF0402683F4485FB | 68 | 4485±1% | 4545 | 0.12 | ||
| CMF0402104F4250FB | 100 | 4250±1% | 4310 | 0.10 | ||
| CMF0402104F4360FB | 100 | 4360±1% | 4403 | 0.10 | ||
| CMF0402104F4485FB | 100 | 4485±1% | 4545 | 0.10 | ||
| CMF0402154F4500FB | 150 | 4500±1% | 4582 | 0.08 | ||
| CMF0402224F3950FB | 220 | 3950±1% | 3987 | 0.06 | ||
| CMF0402224F4250FB | 220 | 4250±1% | 4310 | 0.06 | ||
| CMF0402224F4500FB | 220 | 4500±1% | 4582 | 0.06 | ||
| CMF0402334F3950FB | 330 | 3950±1% | 3987 | 0.05 | ||
| CMF0402334F4500FB | 330 | 4500±1% | 4582 | 0.05 | 1.0 | <3 |
| CMF0402474F4000FB | 470 | 4000±1% | 4045 | 0.04 | ||
| CMF0402474F4500FB | 470 | 4500±1% | 4582 | 0.04 | ||
| CMF0402684F4100FB | 680 | 4100±1% | 4135 | 0.03 | ||
| CMF0402684F4500FB | 680 | 4500±1% | 4582 | 0.03 |
