SKU: SENS-3745
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HaiWang MF58 20K 4000 1% NTC Thermistor Temperature Sensor

₹30.00 (Inclusive of all taxes)
Out of Stock

The HaiWang MF58 is a precision NTC thermistor sensor with a 20KΩ resistance at 25°C and a B-value of 4000K, offering ±1% tolerance for accurate temperature measurement and control in industrial, consumer, and embedded electronics applications.

Features

  • High-precision NTC thermistor with 20KΩ @ 25°C and B-value 4000K (±1% tolerance).
  • Glass-encapsulated construction ensures stable performance in high-temperature, high-humidity environments.
  • Compact, lightweight design with fast thermal response time for dynamic temperature monitoring.
  • Wide operating temperature range suitable for industrial control, appliance safety, and battery management.
  • Direct PCB-mount package simplifies automated assembly and integration into electronic systems.

Out of stock

Description

The HaiWang MF58 NTC thermistor operates on the principle of a negative temperature coefficient, where its electrical resistance decreases predictably as temperature increases. This 20KΩ, B4000 model provides a highly accurate and linear response curve, making it ideal for precise temperature sensing, compensation, and control circuits. Its glass-sealed encapsulation protects the semiconductor element from moisture and chemical contaminants, ensuring long-term reliability in demanding conditions.

Engineered for seamless integration, this sensor delivers a fast thermal response due to its small thermal mass. It is commonly used in temperature feedback loops for HVAC systems, power supplies, and embedded platforms like Arduino or Raspberry Pi when paired with a simple voltage divider circuit. The robust construction and standardized package allow for reliable, repeatable performance across a broad spectrum of commercial and industrial applications.

Key Features

  • Precision NTC thermistor with 20KΩ nominal resistance at 25°C and a B-value (β) of 4000K.
  • ±1% tight tolerance on resistance value ensures high accuracy and interchangeability in temperature sensing circuits.
  • Durable glass encapsulation provides excellent protection against high humidity, thermal shock, and corrosive environments.
  • Compact and lightweight SMD-style package enables easy automated PCB mounting and space-constrained designs.
  • Fast thermal response time due to low thermal mass, suitable for dynamic temperature monitoring applications.
  • Wide available resistance range from 0.1Ω to 1000KΩ offers flexibility for different measurement scales and circuit designs.
  • Stable, long-term performance with high reliability, making it suitable for critical temperature control and compensation.

Applications

  • Temperature feedback and overload protection in household appliances (air conditioners, microwave ovens, electric heaters).
  • Battery temperature monitoring and management for mobile devices, power tools, and energy storage systems.
  • Precision temperature compensation for crystal oscillators, integrated circuits, and instrumentation coils.
  • Industrial process control and equipment temperature monitoring in medical, environmental, and food processing machinery.
  • Liquid level sensing and flow measurement via temperature differential methods.

Technical Specifications

Manufacturer / BrandHaiWang
Model / SeriesMF58 20K
Sensor TypeNTC Thermistor
Resistance @ 25°C (R25)20 kΩ
B-Value (β)4000 K
Resistance Tolerance±1%
Encapsulation / HousingGlass
Package TypePCB Mount (SMD/Through-Hole style)
Primary ApplicationTemperature Measurement, Control & Compensation

Frequently Asked Questions

What is the nominal resistance and B-value of this NTC thermistor?

This HaiWang MF58 thermistor has a nominal resistance (R25) of 20 kilo-ohms (20KΩ) at 25°C and a standard B-value (β) of 4000 Kelvin. The ±1% tolerance on the resistance ensures high accuracy for temperature measurement and compensation circuits.

Why is the glass encapsulation important for this sensor?

The glass encapsulation provides a hermetic seal, protecting the sensitive semiconductor element from moisture, humidity, dust, and mild chemical exposure. This construction enhances long-term stability, reliability, and allows the sensor to operate reliably in harsh industrial or high-temperature environments.

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

Interface is achieved using a simple voltage divider circuit. Connect the thermistor in series with a fixed precision resistor (e.g., 20KΩ) between Vcc and GND. The junction point connects to an analog input pin on the Arduino. The microcontroller reads the voltage, which varies with the thermistor's resistance, and uses a lookup table or the Steinhart-Hart equation to calculate temperature.

What are the typical applications for this type of precision NTC thermistor?

Typical applications include temperature control and safety cut-offs in home appliances (air conditioners, heaters), temperature monitoring for lithium-ion battery packs, thermal compensation for electronic components like oscillators, and process temperature sensing in industrial, medical, and environmental monitoring equipment.

Package Includes

  • 1 x HaiWang MF58 20K 4000 1% NTC Thermistor Temperature Sensor

Additional Information

Weight 0.01 kg
Dimensions 12 × 8 × 2 cm