Self healing fuses (PPTC) are widely used in various scenarios that require overcurrent or overheating protection due to their automatic recovery characteristics. The following are detailed classifications and examples:

1. Protection of electronic devices

• Application scenarios: computers, mobile phones, tablets, etc.

• Example: USB port, power management circuit. Prevent damage caused by short circuits or overloads, automatically restore after troubleshooting, and reduce maintenance costs.

2. Battery pack protection

• Application scenarios: lithium batteries, nickel hydrogen battery packs.

• Examples: Smartphones, power tools, drone batteries. When the current is abnormal during the charging and discharging process, the circuit is cut off, and the temperature drops before recovering, improving safety.

3. Automotive electronic systems

• Application scenarios: electric car windows ABS、 Car charger.

• Example: Protect motors and sensors from short circuits or overloads, adapt to high temperature environments in automobiles, and ensure circuit stability.

4. Industrial equipment

• Application scenarios: motor control, power module PLC。

• Example: To prevent industrial robots or production line equipment from shutting down due to overcurrent and reduce production interruptions.

5. Consumer electronics products

• Application scenarios: TV, sound system, game console.

• Example: Internal circuit board protection to prevent component damage caused by unstable voltage.

6. Communication equipment

• Application scenarios: base stations, routers, fiber optic equipment.

• Example: Ensure the continuous operation of critical equipment to prevent malfunctions caused by lightning strikes or power fluctuations.

7. Household appliances

• Application scenarios: air conditioning, refrigerator, washing machine.

• Example: Protect the compressor or control board to avoid the risk of overheating caused by motor stalling.

8. LED lighting system

• Application scenarios: Indoor and outdoor LED lighting fixtures, landscape lighting.

• Example: Preventing sudden changes in current in the driving circuit and extending the lifespan of LEDs.

9. Medical equipment

• Application scenarios: monitor, infusion pump, medical power supply.

• Example: Ensure high reliability and avoid interference of protective actions on equipment operation.

10. Security system

• Application scenarios: cameras, alarms, access control systems.

• Example: Continuous power supply protection to prevent equipment damage caused by abnormal power supply.

Other precautions

• Applicability: Suitable for low to medium power scenarios, the response speed is slower than traditional fuses, but it excels in reusability.

• Restrictions: High voltage or extreme temperature environments should be carefully selected to ensure that the PPTC specifications meet the requirements (such as pressure resistance and operating temperature range).

summarize

PPTC has significant advantages in scenarios that require automatic recovery and avoid frequent maintenance, covering a wide range of fields from consumer electronics to industrial systems, and is a key component in improving device security and reliability.