1DA131J

1DA131J Datasheet


1DA101K-EC 100 1DA131J 130 1DA131K 130 1DA500J 50 1DA500K 50 1DB102J 1,000 1DB102K 1,000 1DB102K-EC 1,000 1DB501K 500 1DC103J 10,000 1DC103J-EC 10,000 1DC302J 3,000 1DC502J 5,000 1DC502J-EC 5,000 1DE104J 100,000 1DE104K 100,000 1DE104K-EC 10,000 2DA200J 20 2DA200K 20 2DA503J 50,000

Part Datasheet
1DA131J 1DA131J 1DA131J (pdf)
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NTC Thermistors - Disc and Chip Style

Temperature Measurement and Control Thermistors

DISC and CHIP Style

DISC & CHIP NTC STYLE NTC THERMISTOR Features
• Wide Ohmic Value Range
• Accurate & Stable
• Fast Thermal

Response Time
• Tight Tolerances
• High Sensitivity

NTC Thermistors

Negative Temperature Coefficient NTC thermistors are thermally sensitive semiconductor resistors which exhibit a decrease in resistance as absolute temperature increases. Change in the resistance of NTC thermistor can be brought about either by a change in the ambient temperature or internally by self-heating resulting from current flowing through the device. Most of the practical applications of NTC thermistors are based on these material characteristics.

NTC Disc and Chip Style Devices

Ametherm manufactures Disc and Chip style thermistors in resistance values ranging from ohm to 500,000 ohms. These devices are suitable for a range of resistance values and temperature coefficients from relatively low resistance and temperature coefficients to very high values. Precision resistance tolerances are available to Standard resistance tolerances are from 5% to All tolerances are specified at 25°C or may be specified at any temperature within the operating temperature range of the thermistor.

Thermistor Terminology for Temperature Measurement & Control Devices
• The dissipation constant D.C. is the ratio, normally expressed in milliwatts per degree C mw/°C , at a specified ambient temperature, of a change in power dissipated in a thermistor to the resultant change in body temperature.
• The thermal time constant T.C. is the time required for a thermistor to change of the total difference between its initial and final body temperature when subjected to a step function change in temperature under zero-power conditions and is normally expressed in seconds S .
• Alpha or Temperature Coefficient or Resistance is the temperature coefficient of resistance is the ratio at a specified temperature, T, of the rate of change of zeropower resistance with temperature to the zero-power resistance of the thermistor. The temperature coefficient is commonly expressed in percent per degree C %/°C .

NTC DISC & CHIP Selection Considerations
• Select Req'd. Resistance Value & Temperature Coefficient

Thermistor Applications

Time and temperature are two of the most frequently measured variables. There are numerous ways of the measuring temperature electronically, most commonly by thermocouples and negative temperature coefficient NTC thermistors. For general purpose temperature measurement, NTC temperature sensors can operate over a wide temperature range -55 to +300°C . They are stable throughout a long lifetime, and are small and comparatively inexpensive. Typically, they have negative temperature coefficients between and -4.9%/°C at 25°C. This is more than ten 10 times the sensitivity of a platinum resistance thermometer of the same nominal resistance. Ametherm's Disc & Chip style thermistors are used in many applications that require a high degree of accuracy and reliability.

Some of the most popular applications of NTC thermistors include:
• Temperature Compensation
• Temperature Measurement & Control
• Fan Motor Control
• Fluid Level & Temperature Sensors

NTC DISC & CHIP - Selection Process

Selection considerations for NTC Disc and Chip Devices

Power dissipation is a common problem in the use of thermistors as they can only dissipate a certain amount of power.
• If the power dissipated exceeds the dissipation constant D.C. rating of the sensor it is likely that it will exhibit self heating.
1DA101K-EC 100 1DA131J 130 1DA131K 130 1DA500J 50 1DA500K 50 1DB102J 1,000 1DB102K 1,000 1DB102K-EC 1,000 1DB501K 500 1DC103J 10,000 1DC103J-EC 10,000 1DC302J 3,000 1DC502J 5,000 1DC502J-EC 5,000 1DE104J 100,000 1DE104K 100,000 1DE104K-EC 10,000 2DA200J 20 2DA200K 20 2DA503J 50,000

A 3 10 28 A 3 10 28 A 3 10 28 A 3 6 28 A 3 6 28 B 3 10 28 B 3 10 28 B 3 10 28 B 3 6 28 C 3 6 28 C 4 12 28 C 4 12 28 C 4 12 28 C 4 12 28 E 3 9 28 E 3 9 28 E 3 9 28 A 7 20 24 A 7 20 24 A 7 20 24
2DB101K 100 2DB102J 1,000 2DB102J-EC 1,000 2DB102K 1,000 2DB151J 150 2DB151K 150 2DC102K 1,000 2DC302J 3,000 2DC302K 3,000 2DE103J 1,0000 2DE103K 1,0000 2DE503K 5,0000 3DA100J 10 3DA100K 10 3DB500J 50 3DB500K 50 3DE502J 5,000 3DE502K 5,000

B 7 18 24 B 7 18 24 B 7 18 24 B 7 18 24 B 7 18 24 B 7 19 24 C 7 18 24 C 7 30 24 C 7 30 24 E 7 17 24 E 7 17 24 E 7 17 24 A 8 48 24 A 8 48 24 B 8 35 24 B 8 35 24 E 8 35 24 E 8 35 24
1998 -2013 Ametherm, Inc
More datasheets: 3DE502K | 1DC502J | 2DE103K | 1DA101K | 1DA101K-EC | 1DA131K | 1DA500K | 1DA500J | 1DB102K | 1DB102J


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Datasheet ID: 1DA131J 517318