Connect the PTC thermistor in series in the load circuit. When the circuit is in normal working condition, the current through the PTC thermistor is less than the rated current. The PTC thermistor is in the normal state and the resistance is small, which will not affect the normality of the protected circuit. jobs. When the circuit fails, the current greatly exceeds the rated current (2 times of the normal working current), and the PTC thermistor suddenly heats up, showing a high resistance state, so that the circuit is in a relatively “off” state for protection purposes. When the fault is removed, the PTC thermistor automatically returns to a low impedance state and the circuit resumes normal operation.
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NTC Thermisters
10D-20
PT series NTC thermistor has to be connected in series to the power source circuit to avoid the surge current at the instant when the electronic circuits are turned on. The device can effectively suppress the surge current, and its resistance and power consumption can be greatly reduced after that through the continuous effect of the current so as not to affect the normal work current. Therefore the Power NTC thermistor is the most convenient and efficient instrument to curb the surge current and protect the electronic devices.
Features
- Strong power and capability for surge current protection.
- Fast response to rapid surges.
- Large material constant (B value) and small remaining resistance.
- High reliability.
- Integral series with an extensive operating range.
- Operating temperature: -55°C to +200°C
Applications
- Switching power supply
- UPS power supply
- Electric heaters
- Electronic energy-saving lamps
- Filament protection of color tubes
- Incandescent lamps and other lights
- Electronic ballasts
Datasheet
SKU: n/a -
MOSFETs
23N50
Features
- Drain Current: ID = 23A @ TC = 25℃
- Drain-Source Voltage: VDSS = 500V (Min)
- Static Drain-Source On-Resistance: RDS(on) = 0.245Ω (Max)
- 100% avalanche tested
- Minimum Lot-to-Lot variations for robust device performance and reliable operation
Applications
- Industrial power supplies
- Motor control
- DC-DC converters
- Inverters
- Switching regulators
Datasheet
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MOSFETs
K3878
2SK3878 is new generation of high voltage MOSFET family that is utilizing an advanced charge balance mechanism for outstanding low on-resistance and lower gate charge performance. This advanced technology has been tailored to minimize conduction loss, provide superior switching performance, and withstand extreme dv/dt rate and higher avalanche energy. It is very suitable for various AC/DC power conversion in switching mode operation for system miniaturization and higher efficiency.
Features
• Low drain−source ON resistance
• High forward transfer admittance
• Low leakage current
• Enhancement mode
Applications
- AC/DC power conversion
- Switching mode operations
- System miniaturization
- Improved efficiency in power conversion circuits
Datasheet
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