SKU: SENS-3769
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Generic B3950 10K NTC Thermistor Temperature Sensor 5x25mm Stainless Steel Probe with 2Meter Cable & XH2.54 Connector

₹77.00 (Inclusive of all taxes)
Out of Stock

This B3950 10K NTC thermistor sensor features a durable 5x25mm stainless steel probe and a 2-meter cable with XH2.54 connector, providing a high-precision, non-linear temperature measurement solution for systems like 3D printers, HVAC controllers, and industrial monitoring from -20°C to 105°C.

Features

  • High-precision 10K NTC thermistor with ±1% resistance tolerance for accurate temperature sensing.
  • Durable 5x25mm stainless steel probe sheath ensures waterproof performance and long-term reliability in wet or harsh environments.
  • Integrated 2-meter cable with standard XH2.54 connector for easy plug-and-play integration into control boards and data acquisition systems.
  • Wide operating temperature range from -20°C to 105°C, suitable for diverse industrial and consumer applications.
  • Non-linear NTC characteristic requires use of a conversion table or Steinhart-Hart equation for precise temperature calculation from resistance.

Out of stock

Description

The B3950 10K NTC Thermistor Temperature Sensor utilizes a negative temperature coefficient (NTC) ceramic element, where electrical resistance decreases predictably as temperature increases. The sensing element is housed within a robust 5mm diameter by 25mm long stainless steel sheath, providing mechanical protection and environmental sealing for reliable operation in applications involving moisture or condensation. The probe offers high insulation resistance (>100 MΩ) and a low thermal dissipation constant (5 mW/°C) to minimize self-heating effects and ensure measurement accuracy.

This sensor outputs a variable resistance signal corresponding to the sensed temperature, which must be read by a microcontroller or PLC using a voltage divider circuit and an analog-to-digital converter (ADC). Due to the inherent non-linearity of the NTC thermistor’s resistance-temperature relationship, precise temperature conversion requires referencing the specific B3950 thermistor lookup table or applying the Steinhart-Hart equation. The included 2-meter cable terminated with a standard XH2.54 2-pin connector facilitates straightforward wiring to development platforms like Arduino, Raspberry Pi, or industrial signal conditioners.

Key Features

  • High-Precision NTC Sensing: 10K ohm resistance at 25°C with ±1% tolerance ensures consistent and repeatable temperature measurements.
  • Industrial-Grade Probe Construction: Sealed stainless steel sheath (5x25mm) provides IP67-equivalent waterproofing and corrosion resistance for harsh environments.
  • Extended Reach Connectivity: 2-meter long, flexible cable with pre-attached XH2.54 connector allows for remote probe placement and hassle-free installation.
  • Optimized Thermal Performance: Low dissipation constant minimizes self-heating error, while high insulation resistance prevents signal leakage.
  • Broad Compatibility: Standard 2-wire output and connector interface compatible with most microcontroller ADCs, temperature controllers, and data loggers.
  • Durable and Reliable: Robust build quality ensures stable long-term operation across the specified -20°C to 105°C range.

Applications

  • 3D Printer Hotend & Bed Temperature Monitoring: Precise feedback for thermal runaway protection and print quality control.
  • HVAC System Duct & Fluid Temperature Sensing: Monitoring air and water temperatures in heating, ventilation, and air conditioning units.
  • Industrial Process Temperature Control: Liquid bath, tank, or machinery temperature measurement in manufacturing environments.
  • Aquarium & Hydroponics System Monitoring: Reliable temperature sensing in aquatic and agricultural growth systems.
  • DIY Electronics & Data Logging Projects: Temperature input for microcontroller-based projects using Arduino, ESP32, or Raspberry Pi.

Technical Specifications

ParameterSpecification
Sensor TypeNTC Thermistor
Model / StyleB3950 10K
Resistance @ 25°C10 kΩ ± 1%
Beta Value (B25/85)3950 K
Measurement Range-20°C to +105°C
Probe Dimensions5 mm diameter x 25 mm length
Probe MaterialStainless Steel Sheath
Cable Length2 meters
Connector TypeXH2.54 2-pin
Output Wires2
Typical Dissipation Constant5 mW/°C
Insulation Resistance> 100 MΩ
Shipping Weight0.01 kg
Shipping Dimensions7 x 4 x 2 cm

Frequently Asked Questions

How do I read the temperature from this NTC thermistor sensor?

The sensor outputs a variable resistance. You must connect it to a microcontroller's ADC pin through a voltage divider circuit (e.g., a 10K series resistor). The measured voltage corresponds to the thermistor's resistance, which you then convert to temperature using the specific B3950 10K lookup table or the Steinhart-Hart equation in your code. Direct analog readings will not be linear.

What is the operating voltage for this sensor?

The thermistor itself is a passive component and does not have a supply voltage. However, the excitation voltage for the voltage divider circuit is typically 3.3V or 5V, matching your microcontroller's logic level. Ensure the current through the thermistor is kept low (under 1mA) to prevent self-heating, which can affect accuracy.

Is the stainless steel probe fully waterproof?

Yes, the sealed stainless steel sheath provides a high degree of waterproofing, making it suitable for use in wet environments, liquids, or high-humidity conditions. It is designed for immersion and can withstand condensation, though prolonged exposure to high-pressure water jets should be avoided unless a specific IP rating is confirmed.

Can I use this sensor directly with an Arduino or Raspberry Pi?

Yes, it is directly compatible. Connect the sensor's two wires to form a voltage divider with a fixed resistor (e.g., 10K) between your board's 5V/3.3V and an analog input pin. Read the analog value and use a library or conversion formula for the B3950 10K thermistor to calculate the temperature. The XH2.54 connector may require a matching female header.

Package Includes

  • 1 x B3950 10K NTC Thermistor Temperature Sensor (5x25mm Stainless Steel Probe)
  • 1 x 2-meter Cable with XH2.54 Connector

Additional Information

Weight 0.01 kg
Dimensions 7 × 4 × 2 cm