SKU: SENS-3763
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Focusens 5K NTC Thermistor Retainer Temperature Sensor for Refrigerator Defroster Sensor

₹111.00 (Inclusive of all taxes)
Out of Stock

The Focusens 5K NTC Thermistor Retainer Temperature Sensor is a precision thermal component designed for refrigerator defroster systems. Its 5K NTC probe provides accurate temperature feedback for controlling defrost cycles, ensuring efficient and reliable refrigeration operation.

Features

  • 5K NTC thermistor with ±1% resistance tolerance for precise temperature sensing
  • Designed specifically for refrigerator defroster sensor applications
  • Fast thermal response with a time constant ≤20 seconds
  • Secure retainer design for simplified and reliable installation
  • Wide operating temperature range from -20°C to +105°C

Out of stock

Description

This sensor utilizes a Negative Temperature Coefficient (NTC) thermistor, where electrical resistance decreases predictably as temperature increases. The 5KΩ nominal resistance at 25°C provides a stable and measurable signal for temperature monitoring circuits within refrigeration control systems.

Engineered for appliance-grade reliability, the sensor features a low dissipation factor of approximately 6.5 mW to minimize self-heating effects and ensure measurement accuracy. Its robust construction and secure retainer clip are designed for the demanding thermal cycling and vibration environments typical of refrigerator defrost systems.

Key Features

  • 5KΩ NTC Thermistor Probe with ±1% resistance tolerance for high accuracy
  • Optimized for refrigerator defroster sensor replacement and integration
  • Fast thermal response time constant of ≤20 seconds
  • Low dissipation factor (~6.5 mW) minimizes self-heating for stable readings
  • Wide operating temperature range from -20°C to +105°C
  • High insulation resistance ≥100 MΩ for electrical safety and signal integrity
  • Secure retainer clip design ensures proper thermal contact and mounting
  • Maximum power rating of 60 mW for safe operation in control circuits

Applications

  • Refrigerator and freezer defroster system temperature monitoring
  • Replacement sensor for appliance control boards in refrigeration units
  • Temperature feedback for defrost cycle initiation and termination
  • Thermal protection and monitoring in commercial cooling systems

Technical Specifications

Item TypeSensor
Model NameThermistor Temperature Sensor
Rated Resistance5 kΩ ±1%
Time Constant≤20 seconds
Dissipation FactorApprox. 6.5 mW
Maximum Power Rating60 mW
Operating Temperature-20°C to +105°C
Insulation Resistance≥100 MΩ

Frequently Asked Questions

What is the nominal resistance and tolerance of this NTC thermistor?

This sensor features a 5 kΩ (5K) NTC thermistor with a ±1% tolerance at 25°C. The resistance decreases predictably as temperature increases, providing an accurate analog signal for temperature measurement in control circuits.

How do I install this sensor in a refrigerator defroster system?

The sensor is designed with a retainer clip for secure installation. It should be mounted in direct thermal contact with the area being monitored, typically near the evaporator coils. Ensure the thermistor leads are connected to the correct terminals on the appliance's control board, observing proper polarity if applicable.

What is the operating temperature range and response time?

The sensor operates reliably from -20°C to +105°C, covering the full range of refrigerator and freezer environments. It has a fast thermal response with a time constant of ≤20 seconds, allowing for timely detection of temperature changes to control defrost cycles effectively.

Package Includes

  • 1 x Focusens 5K NTC Thermistor Retainer Temperature Sensor

Additional Information

Weight 0.006 kg
Dimensions 6 × 8.5 × 1 cm