BSPM3385TNCR

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TVS – Varistors, MOVs (Transient Voltage Suppression) is one of the voltage clamping or surge protection devices used extensively in commercial, industrial and in consumer electronics. The BSPM3385TNCR is one of the products from the BSP family of TVS – Varistors, MOVs supplied by Bourns. This device is applied in transient overvoltage protection ranging from low to moderate voltage transients.

The BSPM3385TNCR is a three-terminal solid-state device with an active part clamp on a common cathode diode. It has a nominal breakdown voltage of 285V and a maximum peak pulse power of 3300 watts. The device is very small physical dimensions with a minimum height of 0.20 inches and a volume as small as 0.03 cubic inch. It has a glass-filled epoxy body, suitable for the protection of sensitive electronic equipment, such as personal computers, peripherals, industrial equipment, communication systems, modems, ISDN applications, dual-lane servers, etc.

The working principle of the BSPM3885TNCR device is based on the phenomenon ofavalanche breakdown of the PN junction. The device works in a stable equilibrium situation where the depletion region width (W) remains almost constant and the junction voltage increases suddenly when some external electrical or thermal energy is added to the PN junction. This is because of the capability of the PN junction to store energy in a ‘valley’ region during the avalanche breakdown. Thus, when a voltage transient exceeds the breakdown voltage of the PN junction, the stored energy will be released and the device will act as a voltage clamping device.

The following characteristics are essential for proper functioning of the BSPM3885TNCR device:

• Low clamping voltage: The voltage at which the device clamps is significantly lower than the breakdown voltage of the device.
• High surge current capability: This device has high surge current capability and can dissipate more pulse energy.
• High temperature capability: This device can withstand temperatures up to 150 degrees Celsius.
• High reliability: The device can protect against transient overvoltage up to 3300 watts.

The BSPM3885TNCR device is used in a variety of applications, including:

• EPC (Electronic Product Code) readers for RFID applications: The BSPM3885TNCR device provides high reliability and fast response to transient overvoltage and can thus protect efficient operation of the EPC readers used for Radio Frequency Identification (RFID) systems.
• Power over Ethernet (PoE) applications: The PoE requires increased protection due to its capacity to transfer both power and data signals. The BSPM3885TNCR device offers the necessary overvoltage protection for the equipment connected to PoE applications.
• Computer systems: It can be used in computer systems, including personal computers, servers, laptops, etc. It can protect the sensitive components and circuits inside the computer.
• Industrial automation and control systems: The BSPM3885TNCR device can also be used in industrial automation and control systems, such as robotics, programmable logic controllers, motor drivers, etc.
• Communication systems: In communication systems, such as point-to-point microwave links, mobile phones and GSM base stations, the BSPM3385TNCR can provide overvoltage protection for sensitive circuits and components.

The BSPM3885TNCR device has a wide range of applications and can be used in a variety of situations. Its small physical dimensions and high surge current capability make it ideal for high-density, low-power designs. It has high temperature capability and thus can protect sensitive equipment from transient overvoltage, even in high-temperature environments. With such features, the BSPM3885TNCR is an ideal choice for transient voltage suppression applications.

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