Small Size Surface Mount 50K 3977B 2% Accuracy NTC Thermistor Sensor, Fast Thermal Response, Stable Performance For PCB Circuit Temperature Compensation

Product Description

This surface mount NTC thermistor is designed for compact electronic circuits where space is limited and fast temperature sensing is required. It adopts a small SMD chip structure with a 50K Ohm nominal resistance at 25°C and a B-value of 3977K. These parameters make it suitable for temperature compensation, overheat protection and thermal monitoring in power supplies, chargers, LED drivers, industrial PCBs and consumer electronics.

The SMD package allows direct mounting on printed circuit boards using standard reflow soldering processes. Its small size helps save layout space, while the ceramic NTC core provides stable resistance characteristics over a wide temperature range. The device responds quickly to temperature changes, enabling the control system to take protective action before overheating occurs.

This model is particularly useful for circuits that require high integration and reliable thermal monitoring. It can be used for temperature compensation in analog circuits, battery charging protection, power module monitoring and environmental sensing. The chip is compatible with automatic placement equipment and is available in tape and reel packaging for high-volume production.

Product Features

• 50KΩ nominal resistance at 25°C
• B-value 3977K with ±2% accuracy
• Compact surface mount package
• Fast thermal response
• Stable resistance performance
• Low thermal drift
• Suitable for reflow soldering
• Tape and reel packaging available
• Ideal for compact PCB designs

Typical Applications

• PCB temperature compensation
• Power supply modules
• Battery chargers
• LED drivers
• Consumer electronics
• Industrial control boards
• Overheat protection circuits

Technical Specifications

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Advantages & Selling Points

This SMD NTC thermistor offers a perfect balance of small size, high sensitivity and stable performance. It is especially suitable for modern compact electronic products where traditional leaded sensors cannot be used. The high batch consistency also helps improve production efficiency and reduce system calibration costs.

FAQ

Q1: What does SMD mean? A: SMD means Surface Mount Device, which can be directly mounted on the surface of a PCB without drilling holes.

Q2: Can this be used for battery protection? A: Yes, it can be used for temperature monitoring and overheat protection in battery charging and discharging systems.

Q3: Is it available in tape and reel? A: Yes, we provide tape and reel packaging to support automatic SMT assembly.