Radial lead, Resin coated NTC Thermistor for Temperature Measurement Compensation,
Diameter 6.5mm
Temperature Compensation NTC Thermistor Description
Since all metals used for coil windings, etc., 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.
NTC Thermistor for Temperature Measurement/Compensation Features:
¡¤ AMF11 series in radial lead, resin coated form, diamater after coating 6.5mm.
¡¤Wide resistance range from 10 ohm--200k ohm.
¡¤Resistance tolerance can be 5%, 10%, 20%.
¡¤Rated power 0.5W.
¡¤Operating temperature: -55C--125C.
NTC Thermistor for Temperature Measurement Compensation Application examples:
¡¤ 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.
Temperature Compensation NTC Thermistor Dimensions
NTC Thermistor Decreasing Power Consumption Curve
NTC Thermistor for Temperature Measurement/Compensation Application Principle and Circuit Example
AMWEI NTC Thermistor for Temperature Measurement/Compensation Data Sheet
|
Part number |
Resistance @25¡æ
£¨R25£© |
B value£¨25/50¡æ£© |
Dissipation factor
(mW/¡æ) |
Thermal time constant
(S) |
Operating temperature
(¡æ) |
|
R25 range
£¨¦¸£©
|
tolerance
£¨%£© |
B value
£¨K£© |
Tolerance
£¨%£© |
|
AMF11-¡õ¡õ |
3.3~33 |
¡À5
¡À10
¡À20 |
2700 |
¡À5 |
¡Ý6.0
in still air |
¡Ü30
in still air |
-55~+125 |
|
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 ¡õ for filling in Resistance @25¡æ£¨R25£©, the second ¡õ for filling in resistance tolerance.
NTC Thermistor for Temperature Measurement/Compensation Reliability data
| Test |
Standard |
Test Conditions |
¦¤R25/R25 (typical) |
Remarks |
| Storage in dry heat |
IEC 60068-2-2 |
Storage at upper category temperature Temperature: 125oC Time: 1000h |
<3% |
No visible damage |
| Storage in damp heat, steady state |
IEC 60068-2-3 |
Temperature of air: 40oC Relative humidity of air: 93% Duration: 21 days |
<3% |
No visible damage |
| Rapid temperature cycling |
IEC 60068-2-14 |
Lower test temperature: -55oC Upper test temperature: 125oC Number of cycles: 100 |
<3% |
No visible damage |
| Endurance |
\ |
Pmax: 450mW t: 1000h |
<3% |
No visible damage |
| Long-term stability |
\ |
Temperature: 125oC T: 10000h |
<5% |
No visible damage |
|
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