Linear Silicon PTC Thermistors Temperature Sensors

Silicon PTC Thermistor Outlook Dimension
AMWEI AM-LPTC1000 RT Curve

AMWEI AM-LPTC1000 RT Curve,  linearized                        with parallel resistor

Linear PTC thermistors resistance increases with the temperature rises in linearity, displays a virtually linear positive temperature coefficient over their entire temperature range, ensuring highly accurate measurements.  A linearization resistor can be easily added where further linearization is required. .

As the construction material is mainly semiconductor monocrystalline silicon, also called silicon temperature sensor, silicon thermistors, sometimes referred to as silistors.

As the temperature coefficient is positive, the silicon temperature sensors exhibit fail-safe operation when a system overheats.
Furthermore silicon is inherently stable, so silicon temperature sensor is extremely reliable, has very long operational lifetimes.
Hermetically sealed glass package, axial leaded, Dumet wire, 2 leads. Silicon PTC thermistors temperature sensor in small dimension, tightness, available for tape package, convenient for automatic installation.

AMWEI Linear Silicon PTC thermistors Temperature Sensors widely applied in temperature sensing and control in drives and motors, equipment, industrial automation control, etc

Silicon PTC Thermistors Temperature Sensors Features:

  • Silicon temperature sensors have a TK (temperature coefficient) which is nearly constant over the complete temperature range. Temperature coefficient:α25/50≥0.7%/C.
  • Excellent long term stability, annual diversification rate≤0.01C/per year, temperature drifts during the lifetime of silicon temperature sensor are negligible.
  • Temperature measurement range: -55C to +150C. AM-LPTC600 can upto +180C.
  • AMWEI silicon PTC thermistors temperature sensors can withstand more than +200C without damage.
  • Thermal Time Constant: 21 seconds max in still air.
  • Dissipation factor:1.5mW/C.min.
  •  Insulation resistance: 100 Million ohm min. (DC=100V)
  • Maximum operating current:8mA. Rated operating current: 2mA.
  • Rated power:50mW max.
  • Typical resistance @25C 600 ohm, 1000 ohm, 1600 ohm, 2000 ohm. Other R25 resistance, such as 200 ohm, 3000 ohm, 4000 ohm can be made upon request.
  • Can also make specific customer tailored housing cable Silicon PTC thermistor Temperature Probe Assembly upon request. Housing for reference.

NXP KTY84 KTY83 KTY81 Silicon Temperature Sensors Replacement Information

For AMWEI AM-LPTC600, rated resistance @100C 1000 ohm, tolerance 3%, 5%,
substitute to Philips NXP Silicon Temperature Sensors KTY84/130, KTY84/150, KTY84/151.
Widely applied in the temperature sensing and controls in drives and motors, spindles, inverters and control systems, etc.

For AMWEI AM-LPTC1000, rated resistance @25C 1000 ohm, tolerance 1%, 2%, 3%, 5%,
alternative to Philips NXP Silicon Temperature Sensors KTY81-1, KTY83-1 series,
type no.KTY81-110, KTY81-120, KTY81-121, KTY81-122,KTY81-150, KTY81-151, KTY81-152, KTY83-110, KTY83-120, KTY83-121, KTY83-122, KTY83-150, KTY83-151, KTY83-152.
This part silicon temperature sensor is widely used in wiring harnesses built in transmission units, vehicles, etc.

For AMWEI AM-LPTC2000, rated resistance @25C 2000 ohm, tolerance 1%, 2%, 3%, 5%,
Philips NXP Silicon Temperature Sensors KTY81-2 KTY83-2 series cross,
type no.KTY81-210, KTY81-220, KTY81-221, KTY81-222,KTY81-250, KTY81-251, KTY81-252.
Widely applied in the temperature sensing and control of instrument, equipment, compressor, process control, etc.

Silicon PTC Thermistors Temperature Sensors Resistance vs. Temperature Data

 Temperature  AM-LPTC600    AM-LPTC1000    AM-LPTC1600    AM-LPTC2000  
 Centigrade 
(C)
 Fahrenheit 
(F)
-55C-67F\490 ohm\980 ohm
-50C-58F\515 ohm\1030 ohm
-40C-40F359 ohm567 ohm998 ohm1135 ohm
-30C-22F391 ohm624 ohm1073 ohm1247 ohm
-20C-4F424 ohm684 ohm1153 ohm1367 ohm
-10C14F460 ohm747 ohm1242 ohm1495 ohm
0C32F498 ohm815 ohm1335 ohm1630 ohm
10C50F538 ohm886 ohm1437 ohm1772 ohm
20C68F581 ohm961 ohm1547 ohm1922 ohm
25C77F603 ohm1000 ohm1600 ohm2000 ohm
30C86F626 ohm1040 ohm1654 ohm2080 ohm
40C104F672 ohm1122 ohm1772 ohm2245 ohm
50C122F722 ohm1209 ohm1901 ohm2417 ohm
60C140F773 ohm1299 ohm2033 ohm2597 ohm
70C158F825 ohm1392 ohm2165 ohm2785 ohm
80C176F882 ohm1490 ohm2302 ohm2980 ohm
90C194F940 ohm1591 ohm2448 ohm3182 ohm
100C212F1000 ohm1696 ohm2591 ohm3392 ohm
110C230F1062 ohm1805 ohm2730 ohm3607 ohm
120C248F1127 ohm1915 ohm2850 ohm3817 ohm
130C266F1194 ohm2023 ohm2988 ohm4008 ohm
140C284F1262 ohm2124 ohm\4166 ohm
150C302F1334 ohm2211 ohm\4280 ohm
160C320F1407 ohm\\\
170C338F1482 ohm\\\
180C356F1560 ohm\\\

Linear Silicon PTC Thermistors Temperature Sensors Probe Application:

  • Motion control temperature sensor, temperature sensing and controls in drives and motors, spindles, inverters and control systems, etc.
  • Industrial automation control equipment.
  • Home appliance temperature detection and compensation.
  • Precision circuit and crystal oscillator temperature compensation.
  • Temperature compensation of silicon semiconducting devices.
  • Temperature compensation of instrumentation amplifier.
  • A/D converter temperature compensation.
  • Micro motor timing control.
  • Automobile temperature detection and control.
  • Medical equipment temperature detection and control.
  • Linear PTC thermistors applications also include transmission, engine oil and coolant, heating system, overheating protection, amplifiers, power supplies, transducers, telemetry, computers, magnetic amplifiers, thermometry, meteorology, temperature regulation and over-temperature protection.

Typical Linear Silicon PTC Thermistors Temperature Sensor Application Circuit

Temperature measuring circuit using a AM-LPTC1000 silicon sensor

Temperature measuring circuit using a AM-LPTC1000 silicon sensor

AM-LPTC2000 Temperature compensation circuit

AM-LPTC2000 Temperature compensation circuit

Evaluation circuit with AM-LPTC1000 instrumentation amplifier

Evaluation circuit with AM-LPTC1000 instrumentation amplifier

Temperature measuring circuit using a AM-LPTC1000 silicon sensor

Temperature measuring circuit using a AM-LPTC1000 silicon sensor

AM-LPTC2000 Temperature compensation circuit

AM-LPTC2000 Temperature compensation circuit

Evaluation circuit with AM-LPTC1000 instrumentation amplifier

Evaluation circuit with AM-LPTC1000 instrumentation amplifier

AM-LPTC2000 Temperature compensation for converters

AM-LPTC2000 Temperature compensation for converters

When an A/D converter is integrated with a microcontroller, temperature compensation is required.
Using a AM-LPTC2000  temperature sensor in series with linearization resistor RS. This voltage divider provides a linear temperature dependent voltage VT of between 1.127 V and 1.886 V over the range 0 to 100 °C. This voltage is used as a reference for the A/D converter. The linear slope ‘S’ of VT = 7.59 mV/ K.

Silicon Sensors Application Precaution 

Minimum lead wire length tailored to shall be ≥8mm.
In lead wire bending, bending point shall be more than 2mm away from glass body part.

Mounting and Handling Recommendations

Excessive forces applied to a sensor may cause serious damage. To avoid this, the following recommendations should be adhered to:

  • No perpendicular forces must be applied to the body
  • During bending, the leads must be supported
  • Bending close to the body must be done very carefully
  • Axial forces to the body can influence the accuracy of the sensor and should be avoided
  • These sensors can be mounted on a minimum pitch of >5 mm

Soldering and Welding

  • Avoid any force on the body or leads during, or just after, soldering.
  • Do not correct the position of an already soldered sensor by pushing, pulling or twisting the body.
  • Prevent fast cooling after soldering.
  • For hand soldering, where mounting is not on a printed-circuit board, the soldering temperature should be <300C the soldering time <3 s and the distance between body and soldering point >1.5 mm.
  • For hand soldering, dip, wave or other bath soldering, mounted on a printed-circuit board, the
  • soldering temperature should be <300C, the soldering time <5 s and the distance between body and soldering point >1.5 mm.
  • The distance between the body and the welding point should be >0.5 mm. Care should be taken to ensure that welding current never passes through the sensor. 

Other AMWEI PTC NTC Thermistors for Temperature Sensing

PTC Thermistors Limit Temperature Sensor

PTC Thermistors Limit Temperature Sensor

PTC Thermistors Motor protection Single Sensors Triple Sensors

PTC Thermistors Motor protection Single Sensors Triple Sensors

Radial Resin NTC Thermistor Temperature Sensor

Radial Resin NTC Thermistor Temperature Sensor

Thermistors Temperature Sensor Probe Assemblies

Thermistors Temperature Sensor Probe Assemblies

Radial Glass NTC Thermistor

Radial Glass NTC Thermistor Temperature Sensor

Content Headline

Thermistors Application

FAQ Silicon PTC Sensor

No
AMWEI silicon PTC Thermistors temperature sensor AM-LPTC600 is DO35 package, glass encapsulated part 4.6mm max.
Max. Temperature measurement can only upto 180C.

No

AMWEI silicon PTC Thermistors temperature sensor AM-LPTC1000 is DO35 package,
Max. Temperature measurement can only upto 150C.
The resistance vs. Temperature Data is NOT exactly same.

Standard package is loose bulk package. Taped package can be made upon request.