Vishay Ametherm NTC Inrush Current Limiter Thermistor 1 Ohm MegaSurge MS35

The Vishay Ametherm MegaSurge MS35 1R040 is a high-performance 2-pin NTC thermistor designed for inrush current limiting in demanding applications. It offers a simple, one-component solution that replaces traditional wire wound resistors with timers and relays, simplifying designs and improving reliability.

This MS35 series thermistor can withstand high steady-state currents up to 40A and up to 800J of input energy at 25°C, making it suitable for robust industrial and power management systems. Its construction enhances safety by eliminating the fire hazard associated with failed relays, providing peace of mind in critical equipment.

Key Features

• High Current Handling: Supports steady-state currents to 40A
• High Energy Absorption: Capable of absorbing up to 800J of input energy
• Safety Enhancement: Eliminates fire hazards from failed relay circuits
• Fast Thermal Response: Thermal time constant of 240 seconds
• Efficient Dissipation: Dissipation constant of 78mW/°C
• Approvals: UL approved for reliable performance

This thermistor is ideal for a variety of applications including power supplies, motor drives, and test equipment. Its 35mm disc size and radial leaded package allow for straightforward PCB mounting. With no SVHC substances, it meets current environmental standards.

Specifications

• Resistance at 25°C: 1Ω (±25%)
• Disc Size: 35mm
• Thermal Time Constant: 240s
• Dissipation Constant: 78mW/°C
• Maximum Energy Rating (25°C): 800J
• Maximum Steady State Current (25°C): 40A
• Approvals: UL
• Operating Temperature Range: Not specified
• Dimensions: Height 43mm, Width 33mm, Depth 15mm
• Weight: 30 grams

Ideal for engineers and designers seeking a dependable NTC thermistor for inrush current protection.