The B57236S250M is a PTC (Positive Temperature Coefficient) thermistor from EPCOS (TDK). This type of thermistor exhibits a significant increase in resistance as its temperature rises beyond a specific threshold (the Curie temperature). They are primarily used for circuit protection and self-regulating heating applications.

Applications

• Overcurrent protection in power supplies and electronic circuits
• Overload protection for motors and transformers
• Short-circuit protection
• Self-regulating heaters and heating elements
• Inrush current limiting

Features

• Positive Temperature Coefficient (PTC) characteristic
• Self-resetting protection
• Compact and space-saving design
• High reliability and long service life
• Flame-retardant epoxy coating

Benefits

• Provides reliable overcurrent and overtemperature protection
• Eliminates the need for manual resetting after a fault condition
• Reduces board space requirements
• Ensures safe and stable operation of electronic equipment
• Increases the lifespan of protected components

Technical Specifications

Operating Voltage: Varies, typically up to 265VAC

Switching Temperature (Curie Temperature): This depends on the exact variant.

Resistance at 25°C (R25): This value is variable based on the exact part number details, consult datasheets for specific value.

Maximum Current: Varies depending on application and part number variant

Material: Ceramic semiconductor

Termination: Typically radial or axial leads depending on form factor.