VISHAY AMETHERM SL22 Series NTC Thermistor, 1 ohm Radial Leaded

The VISHAY AMETHERM SL22 1R020 is a high-quality, radial-leaded NTC (Negative Temperature Coefficient) thermistor designed for robust inrush current limiting. This compact component is manufactured with B-type material, providing a stable beta value and resistance curve for reliable performance across a wide temperature range. Its core function is to protect sensitive electronic circuits from the damaging effects of sudden high-current surges during power-up.

Featuring a radial-leaded, two-pin case design, this thermistor is easy to mount onto printed circuit boards (PCBs). It boasts a substantial 65J maximum energy rating, ensuring it can safely absorb and dissipate high-energy pulses. The device also supports a maximum steady-state current of 20A, making it suitable for demanding power applications.

Key Applications

This versatile SL22-series thermistor is an ideal protection component for a broad spectrum of equipment. It is commonly used in:

• AC motor drive circuits
• Switch-mode power supplies and UPS systems
• Motor drives and controllers
• High-fidelity audio amplifiers
• Battery charger circuits
• Frequency generators and signal sources

By limiting inrush current, it enhances the safety and longevity of connected components, supporting applications in motor drive control, power management, audio systems, general maintenance and repair, and consumer electronics. It carries key international safety approvals from CSA and UL, confirming its compliance with rigorous standards.

Technical Specifications

• Product Range: SL22 Series
• Resistance at 25°C: 1 ohm with a tolerance of ±20%
• Dissipation Constant: 32.4mW/°C
• Thermal Time Constant: 40 seconds
• Disc Diameter: 22mm
• Maximum Energy Rating at 25°C: 65J
• Maximum Steady State Current at 25°C: 20A