HaiWang HW-68 1/6W 100k 4000PPM PTC-Linear Thermistor

Name: HaiWang HW-68 1/6W 100k 4000PPM PTC-Linear Thermistor
Brand: HaiWang
SKU: SENS-3756
Price: 15.00 INR
Availability: OutOfStock

₹15.00 (Inclusive of all taxes)

Out of Stock

The HaiWang HW-68 is a 1/6W, 100kΩ, 4000ppm/K PTC linear thermistor designed for direct temperature sensing and control circuits. It offers a linear resistance increase with temperature, simplifying circuit design without external linearization, and is compatible with a wide range of electronic systems operating from -40°C to 180°C.

Features

PTC Linear Thermistor with 4000ppm/K temperature coefficient
100kΩ nominal resistance at reference temperature
Wide operating temperature range from -40°C to 180°C
1/6W power rating for reliable signal conditioning
Linear resistance-to-temperature response simplifies circuit design

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Description

The HaiWang HW-68 PTC linear thermistor is a passive temperature-sensing component constructed with specialized Positive Temperature Coefficient (PTC) material. Its core principle is a predictable, linear increase in electrical resistance corresponding directly to a rise in ambient temperature, providing a stable analog signal for monitoring systems.

Engineered for durability and stability, this thermistor features a compact, robust structure suitable for automated PCB assembly. Its performance profile allows it to serve as a high-value alternative to platinum RTDs (like PT100/PT1000) in applications below 180°C, offering a simplified interface for temperature compensation, overload protection, and thermal control circuits in consumer electronics, automotive systems, and industrial equipment.

Key Features

Linear PTC characteristic with 4000ppm/K coefficient ensures predictable output
Robust construction using stable PTC material for long-term reliability
Wide -40°C to 180°C operating range suits harsh environments
Compact, standardized footprint compatible with automated PCB assembly
1/6W power rating provides headroom for stable signal conditioning
Direct replacement for platinum RTDs (PT100/PT1000) in sub-180°C applications
Fast thermal response time for accurate real-time temperature detection

Applications

Temperature compensation and sensing in power supply units and motor drivers
Over-temperature protection and thermal management in automotive electronic control units (ECUs)
Environmental temperature monitoring in HVAC control boards and thermostat systems
Simple temperature feedback for 3D printer hotends and heated beds
Battery pack temperature monitoring in portable electronics and energy storage systems

Technical Specifications

Manufacturer	HaiWang
Model Number	HW-68
Item Type	Thermistor
Thermistor Type	PTC Linear
Nominal Resistance	100 kΩ
Temperature Coefficient	4000 ppm/K
Power Rating	1/6 Watt
Operating Temperature Range	-40°C to 180°C

Frequently Asked Questions

What is the temperature coefficient of the HW-68 thermistor?

The HaiWang HW-68 PTC linear thermistor has a temperature coefficient of 4000 parts per million per Kelvin (4000 ppm/K). This means its resistance increases linearly by 0.4% for every 1°C rise in temperature, providing a predictable analog output directly proportional to temperature change.

What is the operating temperature range and power rating?

This thermistor is rated for continuous operation across a wide temperature range from -40°C to 180°C. Its power dissipation rating is 1/6 Watt (approximately 167mW), which is sufficient for most signal-level conditioning circuits without risk of self-heating errors.

How do I interface this PTC thermistor with a microcontroller like Arduino?

Interface it by creating a voltage divider circuit. Connect the HW-68 thermistor in series with a fixed reference resistor (e.g., 100kΩ) between your microcontroller's supply voltage (3.3V or 5V) and ground. Connect the junction between the thermistor and fixed resistor to an analog input pin. The measured voltage will vary linearly with the thermistor's resistance and thus the temperature.

Can this thermistor replace a PT100 or PT1000 sensor?

Yes, the HW-68 can serve as a direct replacement for platinum RTD sensors like PT100 or PT1000 in applications where the temperature does not exceed 180°C. It offers a linear response similar to an RTD but with a higher base resistance (100kΩ), which can simplify amplifier design and improve signal-to-noise ratio in some circuits.