Linear Silicon PTC Thermistors Temperature Sensors
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 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.
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.
| Centigrade |
| Fahrenheit |
|-55C||-67F||\||490 ohm||\||980 ohm|
|-50C||-58F||\||515 ohm||\||1030 ohm|
|-40C||-40F||359 ohm||567 ohm||998 ohm||1135 ohm|
|-30C||-22F||391 ohm||624 ohm||1073 ohm||1247 ohm|
|-20C||-4F||424 ohm||684 ohm||1153 ohm||1367 ohm|
|-10C||14F||460 ohm||747 ohm||1242 ohm||1495 ohm|
|0C||32F||498 ohm||815 ohm||1335 ohm||1630 ohm|
|10C||50F||538 ohm||886 ohm||1437 ohm||1772 ohm|
|20C||68F||581 ohm||961 ohm||1547 ohm||1922 ohm|
|25C||77F||603 ohm||1000 ohm||1600 ohm||2000 ohm|
|30C||86F||626 ohm||1040 ohm||1654 ohm||2080 ohm|
|40C||104F||672 ohm||1122 ohm||1772 ohm||2245 ohm|
|50C||122F||722 ohm||1209 ohm||1901 ohm||2417 ohm|
|60C||140F||773 ohm||1299 ohm||2033 ohm||2597 ohm|
|70C||158F||825 ohm||1392 ohm||2165 ohm||2785 ohm|
|80C||176F||882 ohm||1490 ohm||2302 ohm||2980 ohm|
|90C||194F||940 ohm||1591 ohm||2448 ohm||3182 ohm|
|100C||212F||1000 ohm||1696 ohm||2591 ohm||3392 ohm|
|110C||230F||1062 ohm||1805 ohm||2730 ohm||3607 ohm|
|120C||248F||1127 ohm||1915 ohm||2850 ohm||3817 ohm|
|130C||266F||1194 ohm||2023 ohm||2988 ohm||4008 ohm|
|140C||284F||1262 ohm||2124 ohm||\||4166 ohm|
|150C||302F||1334 ohm||2211 ohm||\||4280 ohm|
- 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.
Temperature measuring circuit using a AM-LPTC1000 silicon sensor
Temperature measuring circuit using a AM-LPTC1000 silicon sensor
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.
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
FAQ Silicon PTC Sensor
AMWEI silicon PTC Thermistors temperature sensor AM-LPTC600 is DO35 package, glass encapsulated part 4.6mm max.
Max. Temperature measurement can only upto 180C.
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.