1KSMB68 Circuit Protection

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TVS - Diodes: 1KSMB68 application field and working principle

TVS (Transient Voltage Suppressor) diodes are an important component in the field of electronics. They are used to protect sensitive electronic components from transient overvoltages. By redirecting any overvoltages through a downward path, TVS diodes help to prevent permanent damage to such delicate parts.

One TVS diode family particularly suited for overvoltage protection is the 1KSMB68 family. The 1KSMB68 family of diodes is designed to provide reliable surge protection for sensitive electronic components in a wide range of application fields. It also provides reliable ESD protection coverage up to at least 10 kV.

1KSMB68 TVS diodes feature a low forward voltage drop of less than 0.7V and low I_R , making them highly efficient in dissipating energy created by transient high voltage events. It also has an extremely low Q_rr and Q_rr, making them ideal for protecting devices from high pulse energy discharges. Additionally, the 1KSMB68 family of TVS diodes is characterized by a low saturation current and an excellent temperature stability.

The 1KSMB68 diode family is configured in a 4-pin SOD-123 package, making it ideal for applications that require a small footprint. The diode is also RoHS compliant and provides UL1449 approval.

The working principle of the 1KSMB68 is based on the reversed-bias Zener breakdown voltage, which determines the level of ESD (Electrostatic Discharge) protection it can provide. When the diode encounters a voltage spike that is higher than the Zener voltage, electrons from the diode junction are forced into the metal, thus providing resistance to further increases in voltage. This allows the diode to be effective in providing ESD protection.

When the 1KSMB68 diode is subjected to a pulsed voltage, the diode is turned “on”, allowing the current to flow through the diode. When the voltage drops, the diode is then turned “off”, preventing any further damage to the components.

In addition to ESD protection, the 1KSMB68 family of TVS diodes can provide protection against lightning-induced surge voltages as well. This is achieved by the clamping voltage of the diode, which refers to the voltage at which it limits the maximum amount of available voltage and thus protects the components from permanent damage.

Overall, the 1KSMB68 family of TVS diodes is a highly efficient and reliable component for providing overvoltage and ESD protection in a wide range of applications. Its small size, low forward voltage drop, and excellent temperature stability make it an ideal choice for applications where size and cost are major concerns. Additionally, its excellent clamping voltage and low Q_rr and Q_rr characteristics make it especially adept at lightning-induced surge protection.

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