Zener diodes are widely used for voltage clamping due to their sharp breakdown characteristics. When the input voltage exceeds the Zener breakdown voltage, the diode conducts, diverting excess current to ground and clamping the output voltage. YFW’s MM1W series Zener diodes (e.g., MM1W11 with 11V regulation) offer low leakage current and fast response times, making them ideal for low-power applications like consumer electronics and industrial control systems .
MOVs are nonlinear resistors that absorb high-energy surges by reducing their impedance during overvoltage events. YFW’s MOVs feature high surge current capability (up to 60kA) and wide operating voltage ranges, protecting equipment from lightning strikes and power grid fluctuations. Their compact design suits automotive and industrial environments .
Transient Voltage Suppressor (TVS) diodes provide nanosecond-level response to transient spikes. YFW’s SMAJ15A and SMDJ120A TVS diodes offer low clamping voltages (e.g., 22.7V for SMAJ15A) and high power dissipation (1500W for SMDJ120A), making them suitable for USB ports, battery management systems, and motor drives .
Polymeric fuses (PPTCs) automatically reset after overcurrent events, offering cost-effective protection against prolonged overvoltage. YFW’s PPTCs are designed for consumer electronics and telecom equipment, combining low resistance with fast trip times to prevent thermal runaway .
Active protection circuits using operational amplifiers (e.g., LM358) monitor voltage levels and trigger a MOSFET to disconnect the load during overvoltage. YFW’s YFW4435BS MOSFETs, with low RDS(on) and high current handling (16A), ensure efficient load disconnection while minimizing power loss .
Specialized ICs like YFW’s AMS1117-2.5 provide precise voltage regulation and overvoltage shutdown. These devices integrate overcurrent and thermal protection, simplifying designs for power supplies and automotive electronics .
YFW’s portfolio includes:
TVS Diodes: SMAJ/SMDJ series for high-power applications.
Zener Diodes: MM1W series for precision voltage clamping.
MOSFETs: YFW4435BS for active load disconnection.
PPTCs: Compact designs for consumer electronics.
All products adhere to automotive-grade standards (AEC-Q101) and undergo rigorous testing to ensure reliability in harsh environments. For example, YFW’s MOSFETs are widely used in automotive emergency starting power supplies and car chargers, where they protect against voltage transients and short circuits .
Selecting the right overvoltage protection strategy depends on application requirements, cost, and space constraints. YFW’s diverse product line offers scalable solutions for industries ranging from consumer electronics to automotive and industrial systems. By combining advanced components with innovative circuit design, YFW ensures optimal protection against voltage anomalies, enhancing system longevity and safety.
For detailed specifications or customized solutions, visit
YFW’s official website or contact our technical support team
