TDK B57891M Series NTC Thermistor 33k Ohm 4300K Through Hole

The TDK B57891M Series NTC Thermistor is a high-performance negative temperature coefficient sensor designed for reliable temperature measurement and control applications. This through-hole (radial leaded) thermistor offers a resistance of 33kΩ at 25°C with a tight tolerance of ± 5%, ensuring accurate and consistent performance in your circuits.

The thermistor’s B-constant of 4300K (with ± 3% tolerance) provides a stable resistance-temperature relationship, making it ideal for temperature sensing, compensation, and inrush current limiting. Its rugged radial leaded package is easy to assemble on PCBs and provides secure mounting for long-term reliability in a wide range of environments.

Key specifications include an operating temperature range of -40°C to +125°C, making it suitable for both industrial and consumer applications. The compact dimensions (43mm height, 33mm width, 15mm depth) allow for flexible integration into space-constrained designs.

Features

• High accuracy with ± 5% resistance tolerance
• Stable B-constant tolerance of ± 3%
• Wide operating temperature range: -40°C to +125°C
• Through-hole radial leaded package for secure PCB mounting
• Compact and lightweight design (0.01 grams)
• Lead-free construction (no SVHC as of June 2025)

This TDK thermistor is a reliable choice for engineers and hobbyists seeking precise temperature sensing in their projects. Whether you are designing a temperature monitor, battery protection circuit, or HVAC controller, this component delivers consistent performance and durability.