SMBSAC8.5-TP Circuit Protection

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TVS - Diodes

TVS (Transient Voltage Suppressors) are devices used in circuit protection that can be used to protect sensitive electronic components from voltage transients. They are mainly used in automotive, healthcare, electronics, and industrial applications. SMBSAC8.5-TP is one such TVS device that is commonly used in various applications.

SMBSAC8.5-TP Application Field:

SMBSAC8.5-TP is a bi-directional transient voltage suppression diode especially designed for vehicle and telecommunication applications. It is suitable for the protection of electronic equipment against electrostatic discharges like ESD (Electrostatic Discharge), EFT (Electrical Fast Transients) and lightning transients. It is also an ideal solution for short-term power supply failure protection.

The SMBSAC8.5-TP is a low-capacitance diode with a breakdown voltage of 8.5V ± 20%. This makes it suitable for applications with low breakdown voltage requirements like the protection of gate drivers, PLCs and controllers from short-term power supply failure and electrostatic discharges. The device can withstand high pulse current up to 75A (10/1000 μs). It has a low leakage current of 0.2 nA at 25°C and a high surge capability of 3.9 kA (8/20 µs).

SMBSAC8.5-TP Working Principle:

SMBSAC8.5-TP is a bi-directional transient voltage suppression diode. This means it can be used in either a positive or a negative voltage supply. The device performs its protection function by suppressing high voltage transients that enter a connected circuit.

When an overvoltage occurs on the input side, the diode will conduct to form a low-resistance path, thereby limiting and suppressing the increased voltage. The diode will then return to its off state as the voltage decreases to the intended level. During the clamping process, the diode only dissipates voltage and not current, allowing for a high performance yet energy-efficient operation.

The SMBSAC8.5-TP is a relatively small device, measuring just 2.4 mm x 2.2 mm x 1.5 mm, that provides high protection in a very small form factor. It is also RoHS compliant and thus can be used in environments with strict regulations on lead content.

Conclusion:

The SMBSAC8.5-TP is a bi-directional transient voltage suppression diode designed for automotive, healthcare, electronics, and industrial applications. It is well-suited for the protection of electronic components against voltage transients, ESDs, EFTs, and short-term power supply failures. The device is small and energy-efficient and is compliant with RoHS standards.

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