AMWEI AM-LPTC1000 RT Curve,  linearized                        with parallel resistor

Silicon PTC Thermistors Temperature Sensors is PTC thermistors made of monocrystalline silicon material, used in drives and motors, equipment, industrial automation control for temperature sensing measurement and control function, by utilizing silicon PTC thermal property that resistance increases with the temperature rises in linearity.

Silicon PTC Thermistors Temperature Sensors 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. .

The construction material is mainly semiconductor monocrystalline silicon,  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 DO35 package, axial leaded, Dumet wire, 2 leads.

Silicon PTC thermistors temperature sensor in small dimension, tightness, available for tape package, convenient for automatic installation.

• 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 600Ω 1000Ω 1600Ω 2000Ω.  Other R25 resistance, such as 200Ω 1200Ω  1870Ω, 4050Ω, 4700Ω can be made upon request.
• Can also make specific customer tailored housing cable Silicon PTC thermistor Temperature Probe Assembly upon request.  Copper Tube 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.

• 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.

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.

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.