0.5W 20k ohm NTC Thermistors Temperature Compensation For LCD Displays

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0.5W 20k ohm NTC Thermistors Temperature Compensation For LCD Displays

Quick Detail:

MF11 series in radial lead, resin coated form, diamater after coating 6.5mm.
Wide R25 resistance range from 10 ohm--200k ohm. 
Typical resistance @25C 15 ohm, 100 ohm, 200 ohm, 500 ohm, 1k ohm, 2k ohm,3k ohm, 4k ohm, 5k ohm, 10k ohm, 15k ohm, 20k ohm, 30k ohm, 47k ohm, 50k ohm, 100k ohm, 200k ohm, etc.
Resistance tolerance can be 5%, 10%, 20%.
Rated power 0.5W.
Operating temperature: -55C--+125C.

Description:

Since all metals used for coil windings have a positive temperature coefficient of resistance, NTC thermistors are especially useful for compensating resistance changes in devices subjected to temperature variations. Due to the high temperature coefficient of the thermistor as opposed to the low temperature coefficient of the copper, full compensation can be achieved by using a thermistor- resistor network. This network adds less than 15% to the total impedance of the circuit. Compensation of transistor amplifiers, crystal oscillators, etc. can be achieved by using similar methods.

Applications:

Temperature compensation in electronic circuit. 
Temperature compensation of meter,instrument and other computation equipment. 
Temperature compensation of instrumentation winding coil, integrated ciruicts, crystal oscilliator. 
Temperature measurement and control which do not have very high accuracy requests.

Specifications:

Temperature Compensation NTC Thermistor Dimensions   NTC Thermistor Decreasing Power Consumption Curve NTC Thermistor for Temperature Measurement/Compensation Application Principle and Circuit Example   A simple circuit configuration for a thermostat, Circuit for a temperature controller   NTC Thermistor Temperature compensation in transistor circuits. Push-pull compensation.   Schematic drawing of a temperature compensation circuit of Liquid crystal displays (LCDs) using NTC thermistor as temperature sensor For Liquid crystal displays LCD modules often a temperature compensation circuit is used, consisting of NTC thermistors and resistors. The thermistor as main temperature-sensitive device with its characteristic resistance temperature curve provides a high driving voltage in the cold and a low driving voltage in the hot temperature region, compensating in this way the LCD temperature characteristic.   AMWEI NTC Thermistor for Temperature Measurement/Compensation Data Sheet Part number Resistance @25C (R25) Beta value(25/50C) Dissipation factor (mW/C) Thermal time constant (S) Operating temperature (C) R25 range (Ohm) tolerance (%) B(25/50C) (K) Tolerance (%) AMF11-□□ 3.3-33 ohm ±5 ±10 ±20 2700 ±5 ≥6.0 mW/C in still air ≤30s in still air -55~+125C 6.8~68 2830 15~150 2950 33~330 3100 68~680 3250 150~1500 3400 330~3300 3570 680~6800 3740 1500~15000 3900 3300~33000 4050 6800~68000 4250 15000~150000 4450 33000~330000 4670 68000~680000 4800 150000~5000000 5050 Note: The first □ for filling in Resistance @25C(R25), the second □ for filling in resistance tolerance. NTC Thermistor for Temperature Measurement/Compensation Reliability data   Test Standard Test Conditions ΔR25/R25(typical) Remarks Storage in dry heat IEC 60068-2-2 Storage at upper category temperature, Temperature:125C, Time: 1000h <3% No visible damage Storage in damp heat, steady state IEC 60068-2-3 Temperature of air:40C, Relative humidity of air:93%, Duration: 21 days <3% No visible damage Rapid temperature cycling IEC 60068-2-14 Lower test temperature:-55C, Upper test temperature: 125C, Number of cycles:100 <3% No visible damage Endurance   Pmax:450mW, t:1000h <3% No visible damage Long-term stability   Temperature: 125C, Time:10000h <5% No visible damage

Competitive Advantage:

1. Factory supply directly
2. Completed certificates such as UL,VDE,SGS,etc and high quality available
3.  Quick delivery
4. Best after-sales services
5. OEM & ODM available