Self-recovery fuses can be divided into patch self-recovery fuses and plug-in self-recovery fuses. With the increasing miniaturization of product requirements, the application planning of chip fuses has become more and more extensive. The self-recovery fuse is composed of specially treated polymer resin (Polymer) and conductive particles (Carbon Black) dispersed in it. When the circuit is short-circuited or overloaded, the heat generated by the large current flowing through the self-recovery fuse melts the polymer resin, the volume sensitivity increases, and a high resistance condition is formed (b), and the operating current sensitivity decreases, thereby restraining and maintaining the circuit. What are the characteristics and application plan of SMD resettable fuses?

1. Features of SMD self-recovery fuse

1. Satisfaction with RoHS requirements

2.EIA specification: 0805 ~ 2920

3. Adhere to current planning: 0.05 ~ 3.0A

4. The voltage level is from 6V to 60V, which meets the needs of computers and various electronic applications

5. Small pad specification

6. Quick action

7. Low impedance

8. Operating temperature planning: -40 ~ + 85 ℃

9. Safety certification: UL / cUL / TUV

10. Many varieties, complete specifications, can replace Raychem, Littelfuse, BOURNS imported types

11. Small size, stable structure, easy to automate

2. Application plan of SMD self-recovery fuse

1. Computer and peripherals

2. Mobile phone battery pack

3. Automotive Electronics

4. Power supply

5. Communication system

6. Other applications

Guanruida Electronics is a professional manufacturer of self-recovery fuses. The company mainly develops and produces thermistors, varistors, and self-recovery fuses.