What is the role of the fuse resistor?

Share
/ 2019-07-09 / News

Insurance Resistance has the function of ordinary resistance under normal conditions. Once the circuit fails, it will break the circuit within the specified time when it exceeds its rated power. Thereby achieving the protection of other components.

The fuse resistor is indicated by the symbol “F”, which is shaped like a chip resistor, and some like a cylindrical resistor. The common one in the motherboard is the patch fuse resistor, interface The most used in the circuit. Generally used in the power supply circuit, the characteristic of this resistor is small resistance, only a few ohms, it will burn out when it exceeds the rated current, and it will play a protective role in the circuit.

What is the role of the fuse resistor

The fuse resistor acts as both a fuse and a resistor in the circuit diagram and is mainly used in the output circuit of the power circuit and the output circuit of the secondary power supply. Generally, it has a low resistance (several ohms to tens of ohms) and a small power (1/8~1W). Its function is to fuse in time when overcurrent, and other components in the protection circuit are free. Damaged.

When the circuit load is short-circuit fault, the overcurrent will increase the temperature of the fuse to 500~600°C in a short period of time. When the resistive layer is peeled off by heat, it acts as an insurance and achieves the purpose of improving the safety of the whole machine.

Relevant articles recommend

Top suppliers

Response Time

24h

Response Rate

98.00%

Product:Relay, SMD Diode, SMD Transister, Tantalum Capacitor, SMD Resistor, SMD Capacitor,SMD Inductor, Patentiometer, Magnetic Bead
1YRS

Response Time

24h

Response Rate

100.00%

Product:DIODES / ST / VISHAY /AOS / MCC
1YRS

Response Time

24h

Response Rate

100.00%

Product:Capacitors,Resistors,Inductors
1YRS

Response Time

24h

Response Rate

%

Product:Integrated Ciruits-ICs,Power Management ICs,Processors,Controollers,Optocouplers,Memory
1YRS

Response Time

24h

Response Rate

%

Response Time

24h

Response Rate

%

Product:IC,TRANSISTOR,LED
1YRS
Subscribe News

Enter your email address:

Contact Us

+86-755-83536845

One to One Customer Service

17190417227