HaiWang HW-68 1/4W 10K 4500 PTC-Linear Thermistor

Name: HaiWang HW-68 1/4W 10K 4500 PTC-Linear Thermistor
Brand: HaiWang
SKU: SENS-3757
Price: 30.00 INR
Availability: OutOfStock

₹30.00 (Inclusive of all taxes)

Out of Stock

The HaiWang HW-68 is a 1/4W, 10KΩ, B=4500K PTC linear thermistor designed for direct temperature sensing and control circuits. It operates from -40°C to 180°C, providing a linear resistance increase with temperature for simplified circuit design without complex linear compensation.

Features

PTC Linear Thermistor with 10KΩ @ 25°C and B=4500K coefficient
Wide operating temperature range from -40°C to +180°C
1/4W power rating for robust signal conditioning applications
Linear resistance-temperature characteristic simplifies circuit design
Compact, durable through-hole package for automated PCB assembly

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Description

The HaiWang HW-68 PTC linear thermistor utilizes a positive temperature coefficient (PTC) material where resistance increases linearly with temperature rise. This linear characteristic enables straightforward integration into temperature monitoring, compensation, and control circuits without requiring external linearization networks, making it suitable for designers seeking a simple, reliable sensing solution.

Constructed with stable PTC material and a durable package, this thermistor offers consistent performance across its full -40°C to 180°C range. Its standard radial leaded format and resistance value compatibility allow it to serve as a direct, cost-effective alternative to platinum RTDs like PT100/PT1000 in applications where the upper temperature limit is below 180°C.

Key Features

Linear PTC Characteristic: Resistance increases proportionally with temperature, simplifying analog circuit design and calibration.
Broad Temperature Range: Reliable operation from -40°C to +180°C for demanding industrial and environmental applications.
Stable Performance: Manufactured with quality PTC materials to ensure long-term stability and repeatability.
High Sensitivity & Fast Response: Provides quick detection of temperature changes due to its inherent material properties.
Standardized Package: Radial leaded form factor conforms to industry standards for easy automated PCB mounting.
High-Value Build: Offers a durable, cost-optimized sensing solution for temperature measurement and protection circuits.

Applications

Temperature measurement and compensation in power supplies and motor drives.
Over-temperature protection and sensing in consumer electronics and appliances.
Environmental temperature monitoring in HVAC systems and climate control units.
Industrial process control where linear temperature feedback is required.
Replacement for platinum RTD sensors in cost-sensitive applications below 180°C.

Technical Specifications

Manufacturer / Brand	HaiWang
Model Number	HW-68
Item Type	PTC Linear Thermistor
Resistance @ 25°C	10 kΩ
Beta (B) Value	4500 K
Power Rating	1/4 Watt
Operating Temperature Range	-40°C to +180°C
Tolerance	Standard (Typical)
Package Type	Radial Leaded

Frequently Asked Questions

What is the main advantage of a PTC linear thermistor like the HW-68?

The primary advantage is its linear resistance-temperature relationship. Unlike NTC thermistors which have an exponential curve, the HW-68's PTC linear characteristic means its resistance increases in a more proportional, straight-line fashion with temperature. This simplifies circuit design, as it often eliminates the need for complex linearization networks or lookup tables in the microcontroller code, making analog signal conditioning more straightforward.

Can this HW-68 thermistor directly replace a PT100 sensor?

Yes, within specified limits. The HW-68 can serve as a direct replacement for platinum RTDs like PT100 or PT1000 in applications where the operating temperature does not exceed 180°C and where the specific linearity and accuracy of platinum are not absolutely critical. It offers a significant cost advantage. However, designers must verify that the circuit's excitation, measurement range, and calibration are compatible with the HW-68's 10KΩ base resistance and its PTC linear response curve.

What is the meaning of 'B=4500K' for this thermistor?

The 'B' value, or Beta value, is a material constant that describes the resistance-temperature relationship of a thermistor between two reference temperatures (typically 25°C and 85°C). A B value of 4500K indicates the sensitivity and slope of the resistance curve. For the HW-68 with a 10KΩ resistance at 25°C, this B value defines how much the resistance will change per degree Celsius, which is crucial for calculating temperature from a measured resistance value in your application.