STPS3L60Q

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STPS3L60Q Application Field and Working Principle

The STPS3L60Q is a single rectifier diode that belongs to the STMicroelectronics STPS3L series of ultrafast, high-voltage power diodes. It is designed to handle up to 60 amps of forward surge current and features a low-profile surface mount (SMT) design for easy soldering. It also features a low voltage drop-off of 0.7V that delivers excellent dynamic performances. The STPS3L60Q offers superior protection against photovoltaic lightning strikes.

Features of STPS3L60Q

The various features of the STPS3L60Q include:

• Industry-standard SMT package fits into a small area, making it suitable for a wide range of application fields.
• Excellent Surge-Handling Capability: Innovative ultra-fast reversing structure guarantees superior dv/dt tolerance.
• Extremely Low Voltage Drop-Off during forward-conduction: 0.7V is the typical value.
• 100% avalanche rated. STPS3L60Q offers superior protection from photovoltaic lightning strikes.
• High-Speed Switching: Fast switching (< 20ns) helps to minimize waveform distortion and reduce power losses.
• High Reliability: Superior reliability and variation of less than 5% is achieved due to the well-defined and optimized cell-design.

Application Fields

STPS3L60Q rectifier diode is well-suited to a wide range of applications. It can be used in electric bike controllers; power converters; car alternators/regulators; automotive applications; motor controllers; UPS; solar cells/panels; telecom systems; portable electronics; and various other AC/DC power supplying application fields. It is also suitable for high-efficiency full-wave rectification applications.

Working Principle

The STPS3L60Q rectifier diode is a single-phase device that employs a two-terminal structure for rectifying an AC signal. It consists of a single PN junction with a wide bandgap material that allows it to provide superior power handling capability. During normal operation, it acts as a forward-biased diode and allows the current to flow in only one direction. Reverse-polarity signals are blocked. During reverse-polarity operation, the diode acts as a reverse-biased diode and allows the current to flow in the reverse direction. The figure below illustrates the working principle of a single-phase diode rectifier.

As shown in the above figure, the anode is connected to the positive (anodic) supply and the cathode is connected to the negative (cathodic) supply. When an AC (alternating current) source is connected to the anode and cathode, the diode passes current when forward-biased, and blocks current when reverse-biased. During reverse-polarity operation, the diode blocks current thereby preventing damage to the connected circuit.

Conclusion

The STPS3L60Q rectifier diode is a single-phase device that belongs to the STMicroelectronics STPS3L series. It is an ultrafast, high-voltage power diode that is capable of handling up to 60 amps of forward surge current and comes with a low voltage drop-off of 0.7V. It is suitable for a wide range of applications, including electric bike controllers, power converters, motor controllers, car alternators/regulators, UPS, solar cells/panels, telecom systems, and portable electronics. The working principle of a single-phase diode rectifier is also briefly explained.

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