Product Description
The KTY81, KTY82, KTY83, and KTY84 are a series of silicon-based positive temperature coefficient (PTC) temperature sensors. These are not traditional ceramic PTC thermistors, but rather semiconductor sensors that utilize the resistance-temperature characteristics of single-crystal silicon. Known for their exceptional accuracy, excellent linearity, high long-term stability, and reliability, these sensors are ideal for precise temperature measurement, compensation, and control over a wide temperature range of -55°C to +150°C (some models can reach +300°C). The different models in the series (e.g., 81, 82, 83, 84) differ primarily in their rated resistance, temperature coefficient, size, package, and maximum operating temperature, providing users with flexible options to meet the needs of diverse application scenarios.
Specification
Product Name: Silicon PTC Thermistor
R25 : 200-4050Ω±5%
Package : D0-35 glass encapsulated
Operating temperature : -40℃ to +125℃
Application : Industrial, automotive and consumer electronics, etc.
| Part Number | Resistance (Ω) |
Tolerance (%) |
Nominal Resistance（Ω） |
Operating Temperature |
Corresponding to market generic models |
| TR-KTY83-110 | R25=1000 | ±1% | R25=990-1010 | -55℃～175℃ | KTY83-1KΩseries |
| TR-KTY83-120 | R25=1000 | ±2% | R25=980-1020 | ||
| TR-KTY83-121 | R25=1000 | -2% | R25=980-1000 | ||
| TR-KTY83-122 | R25=1000 | ±2% | R25=1000-1020 | ||
| TR-KTY83-150 | R25=1000 | ±5% | R25=950-1050 | ||
| TR-KTY83-151 | R25=1000 | -5% | R25=950-1050 | ||
| TR-KTY83-152 | R25=1000 | ±5% | R25=1000-1050 | ||
| TR-KTY81-110 | R25=1000 | ±1% | R25=990-1010 | ||
| TR-KTY81-120 | R25=1000 | ±2% | R25=980-1020 | ||
| TR-KTY81-121 | R25=1000 | -2% | R25=980-1000 | ||
| TR-KTY81-122 | R25=1000 | ±2% | R25=1000-1020 | ||
| TR-KTY81-150 | R25=1000 | ±5% | R25=950-1050 | ||
| TR-KTY81-151 | R25=1000 | -5% | R25=950-1050 | ||
| TR-KTY81-152 | R25=1000 | +5% | R25=1000-1050 | ||
| TR-KTY81-210 | R25=2000 | ±1% | R25=1980-2020 | -55℃～+150℃ | KTY81-2KΩ series KTY10-5\KTY10-6\K TY10-62\KTY10-7seri es |
| TR-KTY81-220 | R25=2000 | ±2% | R25=1960-2040 | ||
| TR-KTY81-221 | R25=2000 | -2% | R25=1960-2000 | ||
| TR-KTY81-222 | R25=2000 | +2 | R25=2000-2040 | ||
| TR-KTY81-250 | R25=2000 | ±5% | R25=1900-2100 | ||
| TR-KTY81-251 | R25=2000 | -5% | R25=1900-2000 | ||
| TR-KTY81-252 | R25=2000 | ±5% | R25=2000-2100 | ||
| TR-KTY84-130 | R100=1000 | ±3% | R25=575-595 | -40℃～+180℃ | KTY84 series |
| TR-KTY84-150 | R100=1000 | ±5% | R25=565-613 | ||
| TR-KTY84-151 | R100=1000 | -5% | R25=565-575 | ||
| TR-KTY84-152 | R100=1000 | +5% | R25=595-613 | ||
| TR-KTY-200 | R25=200 | ±3%；+5%、-5% | -40℃～+150℃ | ||
| TR-KTY-500 | R25=500 | ±3%；+5%、-5% | |||
| TR-KTY-1200 | R25=1200 | ±3%；+5%、-5% | -50℃～+125℃ | ||
| TR-KTY-1600 | R25=1600 | ±3% | R25=16000±50 Ω |
||
| TR-KTY-3800 | R25=3800 | ±3% | |||
| TR-KTY-4050 | R25=4050 | ±3% | R25=3920-4172 |
Features
Positive Temperature Coefficient (PTC): Its resistance increases monotonically with increasing temperature, resulting in a smooth curve for easy measurement.
Excellent Linearity: The resistance-temperature (R-T) characteristic curve is very close to a straight line across the entire operating temperature range, significantly simplifying measurement circuitry and signal processing, reducing system design complexity.
High Accuracy and Stability: Manufactured using a silicon semiconductor process, it offers excellent long-term stability and repeatability, with minimal hysteresis, ensuring accurate and reliable measurement results.
Fast Response Time: Small packages (such as the DO-35 glass package) enable rapid response to changes in ambient temperature.
Wide Operating Temperature Range: Covers -55°C to over +150°C, with extended versions of some models (such as the KTY83 and KTY84) capable of operation up to +300°C.
High Reliability and Robustness: Rugged glass or SMD packaging resists mechanical stress, vibration, and humidity, ensuring a long service life.
No need for linearization circuit: Due to its good linear characteristics, in many applications, no complex linearization compensation circuit is required. A simple constant current source plus voltage measurement can obtain temperature information, reducing costs.
Application
With its outstanding performance, the KTY81/82/83/84 series is widely used in applications requiring precise temperature sensing in industries such as industry, automotive, and consumer electronics.
Automotive Electronics:
Engine Coolant Temperature (ECT) Sensing
Intake Air Temperature (IAT) Sensing
Oil Temperature Sensing
In-Vehicle Air Conditioning (HVAC) System Temperature Control
Battery Temperature Monitoring in Battery Management Systems (BMS)
Industrial Control and Automation:
Overtemperature Protection for Motors, Transformers, and Power Converters
Temperature Measurement and Compensation in Industrial Process Control Systems
Heating, Ventilation, and Air Conditioning (HVAC) Systems
Consumer Electronics and Home Appliances:
Water Temperature Control in Washing Machines and Dishwashers
Temperature Regulation in Irons, Coffee Makers, and Water Heaters
Overtemperature Protection for Power Adapters
Other Applications:
Temperature Monitoring in Medical Devices
Solar Energy System Thermal Management
Anywhere Low-Cost, High-Reliability Temperature Sensors are Required
In summary, the KTY81/82/83/84 series offers a high-performance alternative to traditional NTC thermistors, particularly suitable for applications requiring high measurement accuracy, long-term stability, and linearity. Its rugged design and wide operating range make it an ideal choice for automotive and industrial applications.
